Glossary
Effortlessly navigate the QCAA Chemistry Glossary to find and understand key terms and concepts
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A
ATAR
Australian Tertiary Admission Rank
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Absolute Measurement Uncertainty
An estimate of the dispersion of the measurement result; the range of values around the measurement result that is most likely to include the true value (ACARA 2015c)
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Absolute Uncertainty of the Mean
The absolute uncertainty of the mean is \(\frac{x_{max}-x_{min}}{2}\)
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Accomplished
Highly trained or skilled in a particular activity; perfected in knowledge or training; expert
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Accuracy
The condition or quality of being true, correct or exact; freedom from error or defect; precision or exactness; correctness; in science, the extent to which a measurement result represents the quantity it purports to measure; an accurate measurement result includes an estimate of the true value and an estimate of the uncertainty
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Accurate
Precise and exact; to the point; consistent with or exactly conforming to a truth, standard, rule, model, convention or known facts; free from error or defect; meticulous; correct in all details
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Acknowledgment
Recognition of the authority or validity of something
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Adept
Very/highly skilled or proficient at something; expert
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Adequate
Satisfactory or acceptable in quality or quantity equal to the requirement or occasion
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Algebraic Representation
A set of symbols linked by mathematical operations; the set of symbols summarises relationships between variables (ACARA 2015c)
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Algorithm
An effective procedure for solving a particular mathematical problem in a finite number of steps
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Analyse
Dissect to ascertain and examine constituent parts and/or their relationships; break down or examine in order to identify the essential elements, features, components or structure; determine the logic and reasonableness of information; examine or consider something in order to explain and interpret it, for the purpose of finding meaning or relationships and identifying patterns, similarities and differences
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Analysis
Examination of evidence to identify the essential features, components, elements or structure; identification of patterns, similarities and differences
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Analytical Technique
A procedure or method for analysing data
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Anomaly
Something that deviates from what is standard, normal or expected (Taylor 1982)
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Applied learning
The acquisition and application of knowledge, understanding and skills in real-world or lifelike contexts that may encompass workplace, industry and community situations; it emphasises learning through doing and includes both theory and the application of theory, connecting subject knowledge and understanding with the development of practical skills
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Applied subject
A subject whose primary pathway is work and vocational education; it emphasises applied learning and community connections; a subject for which a syllabus has been developed by the QCAA with the following characteristics: results from courses developed from Applied syllabuses contribute to the QCE; results may contribute to ATAR calculations
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Apply
Use knowledge and understanding in response to a given situation or circumstance; carry out or use a procedure in a given or particular situation
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Appraise
Evaluate the worth, significance or status of something; judge or consider a text or piece of work
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Appreciate
Recognise or make a judgment about the value or worth of something; understand fully; grasp the full implications of
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Appropriate
Acceptable; suitable or fitting for a particular purpose, circumstance, context, etc.
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Apt
Suitable to the purpose or occasion; fitting, appropriate
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Area of study
A division of, or a section within a unit
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Argue
Give reasons for or against something; challenge or debate an issue or idea; persuade, prove or try to prove by giving reasons
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Argument
Process of reasoning; series of reasons; a statement or fact tending to support a point
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Aspect
A particular part of a feature of something; a facet, phase or part of a whole
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Assess
Measure, determine, evaluate, estimate or make a judgment about the value, quality, outcomes, results, size, significance, nature or extent of something
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Assessment
Purposeful and systematic collection of information about students' achievements
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Assessment instrument
A tool or device used to gather information about student achievement
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Assessment objectives
Drawn from the unit objectives and contextualised for the requirements of the assessment instrument (see also 'syllabus objectives', 'unit objectives')
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Assessment technique
The method used to gather evidence about student achievement (e.g. examination, project, investigation)
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Astute
Showing an ability to accurately assess situations or people; of keen discernment
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Authoritative
Able to be trusted as being accurate or true; reliable; commanding and self-confident; likely to be respected and obeyed
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B
Balanced
Keeping or showing a balance; not biased; fairly judged or presented; taking everything into account in a fair, well-judged way
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Basic
Fundamental
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Behaviour
In science, the action of any material; the action or activity of an individual
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C
Calculate
Determine or find (e.g. a number, answer) by using mathematical processes; obtain a numerical answer showing the relevant stages in the working; ascertain/determine from given facts, figures or information
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Categorise
Place in or assign to a particular class or group; arrange or order by classes or categories; classify, sort out, sort, separate
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Challenging
Difficult but interesting; testing one's abilities; demanding and thought-provoking; usually involving unfamiliar or less familiar elements
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Characteristic
A typical feature or quality
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Claim
An assertion made without any accompanying evidence to support it
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Clarify
Make clear or intelligible; explain; make a statement or situation less confused and more comprehensible
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Clarity
Clearness of thought or expression; the quality of being coherent and intelligible; free from obscurity of sense; without ambiguity; explicit; easy to perceive, understand or interpret
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Classify
Arrange, distribute or order in classes or categories according to shared qualities or characteristics
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Clear
Free from confusion, uncertainty, or doubt; easily seen, heard or understood
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Clearly
In a clear manner; plainly and openly, without ambiguity
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Coherent
Having a natural or due agreement of parts; connected; consistent; logical, orderly; well-structured and makes sense; rational, with parts that are harmonious; having an internally consistent relation of parts
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Cohesive
Characterised by being united, bound together or having integrated meaning; forming a united whole
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Collate
To put together; to compare
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Collection
In science, a systematic approach to gathering and measuring evidence from a variety of sources in order to evaluate outcomes and make predictions
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Comment
Express an opinion, observation or reaction in speech or writing; give a judgment based on a given statement or result of a calculation
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Communicate
Convey knowledge and/or understandings to others; make known; transmit
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Compare
Display recognition of similarities and differences and recognize the significance of these similarities and differences
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Competent
Having suitable or sufficient skills, knowledge, experience, etc. for some purpose; adequate but not exceptional; capable; suitable or sufficient for the purpose; having the necessary ability, knowledge or skill to do something successfully; efficient and capable (of a person); acceptable and satisfactory, though not outstanding
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Competently
In an efficient and capable way; in an acceptable and satisfactory, though not outstanding, way
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Complex
Composed or consisting of many different and interconnected parts or factors; compound; composite; characterised by an involved combination of parts; complicated; intricate; a complex whole or system; a complicated assembly of particulars
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Comprehend
Understand the meaning or nature of; grasp mentally
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Comprehensive
Inclusive; of large content or scope; including or dealing with all or nearly all elements or aspects of something; wide-ranging; detailed and thorough, including all that is relevant
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Concept
In science, an idea or model explaining some natural phenomenon; a theoretical construct; a thought, idea or notion
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Concise
Expressing much in few words; giving a lot of information clearly and in a few words; brief, comprehensive and to the point; succinct, clear, without repetition of information
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Concisely
In a way that is brief but comprehensive; expressing much in few words; clearly and succinctly
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Conclusion
A judgment based on evidence (ACARA 2015c)
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Conduct
Direct in action or course; manage; organise; carry out
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Consider
Think deliberately or carefully about something, typically before making a decision; take something into account when making a judgment; view attentively or scrutinise; reflect on
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Considerable
Fairly large or great; thought about deliberately and with a purpose
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Considered
Formed after careful and deliberate thought
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Consistent
Agreeing or accordant; compatible; not self-opposed or self-contradictory, constantly adhering to the same principles; acting in the same way over time, especially so as to be fair or accurate; unchanging in nature, standard, or effect over time; not containing any logical contradictions (of an argument); constant in achievement or effect over a period of time
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Construct
Create or put together (e.g. an argument) by arranging ideas or items; display information in a diagrammatic or logical form; make; build
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Contrast
Display recognition of differences by deliberate juxtaposition of contrary elements; show how things are different or opposite; give an account of the differences between two or more items or situations, referring to both or all of them throughout
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Controlled
Shows the exercise of restraint or direction over; held in check; restrained, managed or kept within certain bounds
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Convincing
Persuaded by argument or proof; leaving no margin of doubt; clear; capable of causing someone to believe that something is true or real; persuading or assuring by argument or evidence; appearing worthy of belief; credible or plausible
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Correct
Conforming to fact or truth; accurate
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Course
A defined amount of learning developed from a subject syllabus
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Create
Bring something into being or existence; produce or evolve from one
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Creative
Resulting from originality of thought or expression; relating to or involving the use of the imagination or original ideas to create something; having good imagination or original ideas
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Credible
Capable or worthy of being believed; believable; convincing
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Criterion/Criteria
The property or characteristic by which something is judged or appraised
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Critical
Involving skilful judgment as to truth, merit, etc.; involving the objective analysis and evaluation of an issue in order to form a judgment; expressing or involving an analysis of the merits and faults of a work of literature, music, or art; incorporating a detailed and scholarly analysis and commentary (of a text); rationally appraising for logical consistency and merit
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Critique
Review (e.g. a theory, practice, performance) in a detailed, analytical and critical way
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Cursory
Hasty, and therefore not thorough or detailed; performed with little attention to detail; going rapidly over something, without noticing details; hasty; superficial
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D
Data
In science, measurements of an attribute or attributes; data may be quantitative or qualitative and be from primary or secondary sources (ACARA 2015c)
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Dataset
Qualitative data and/or quantitative data (e.g. diagram, graph, image, map, photograph, table) derived from a practical, activity or case study
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Decide
Reach a resolution as a result of consideration; make a choice from a number of alternatives
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Deduce
Reach a conclusion that is necessarily true, provided a given set of assumptions is true; arrive at, reach or draw a logical conclusion from reasoning and the information given
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Defensible
Justifiable by argument; capable of being defended in argument
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Define
Give the meaning of a word, phrase, concept or physical quantity; state meaning and identify or describe qualities
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Demonstrate
Prove or make clear by argument, reasoning or evidence, illustrating with practical example; show by example; give a practical exhibition
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Derive
Arrive at by reasoning; manipulate a mathematical relationship to give a new equation or relationship; in mathematics, obtain the derivative of a function
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Describe
Give an account (written or spoken) of a situation, event, pattern or process, or of the characteristics or features of something
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Design
Produce a plan, simulation, model or similar; plan, form or conceive in the mind; in English, select, organise and use particular elements in the process of text construction for particular purposes; these elements may be linguistic (words), visual (images), audio (sounds), gestural (body language), spatial (arrangement on the page or screen) and multimodal (a combination of more than one)
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Detailed
Executed with great attention to the fine points; meticulous; including many of the parts or facts
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Determine
Establish, conclude or ascertain after consideration, observation, investigation or calculation; decide or come to a resolution
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Develop
Elaborate, expand or enlarge in detail; add detail and fullness to; cause to become more complex or intricate
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Devise
Think out; plan; contrive; invent
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Differentiate
Identify the difference/s in or between two or more things; distinguish, discriminate; recognise or ascertain what makes something distinct from similar things; in mathematics, obtain the derivative of a function
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Discerning
Discriminating; showing intellectual perception; showing good judgment; making thoughtful and astute choices; selected for value or relevance
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Discriminate
Note, observe or recognise a difference; make or constitute a distinction in or between; differentiate; note or distinguish as different
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Discriminating
Differentiating; distinctive; perceiving differences or distinctions with nicety; possessing discrimination; perceptive and judicious; making judgments about quality; having or showing refined taste or good judgment
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Discuss
Examine by argument; sift the considerations for and against; debate; talk or write about a topic, including a range of arguments, factors or hypotheses; consider, taking into account different issues and ideas, points for and/or against, and supporting opinions or conclusions with evidence
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Disjointed
Disconnected; incoherent; lacking a coherent order/sequence or connection
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Distinguish
Recognise as distinct or different; note points of difference between; discriminate; discern; make clear a difference/s between two or more concepts or items
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Diverse
Of various kinds or forms; different from each other
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Document
Support (e.g. an assertion, claim, statement) with evidence (e.g. decisive information, written references, citations)
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Draw conclusions
Make a judgment based on reasoning and evidence
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E
Effective
Successful in producing the intended, desired or expected result; meeting the assigned purpose
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Efficient
Working in a well-organised and competent way; maximum productivity with minimal expenditure of effort; acting or producing effectively with a minimum of waste, expense or unnecessary effort
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Element
A component or constituent part of a complex whole; a fundamental, essential or irreducible part of a composite entity
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Elementary
Simple or uncompounded; relating to or dealing with elements, rudiments or first principles (of a subject); of the most basic kind; straightforward and uncomplicated
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Erroneous
Based on or containing error; mistaken; incorrect
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Essential
Absolutely necessary; indispensable; of critical importance for achieving something
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Evaluate
Make an appraisal by weighing up or assessing strengths, implications and limitations; make judgments about ideas, works, solutions or methods in relation to selected criteria; examine and determine the merit, value or significance of something, based on criteria
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Evidence
In science, evidence is data that has been selected as it is considered reliable and valid and can be used to support a particular idea, conclusion or decision; evidence gives weight or value to data by considering its credibility, acceptance, bias, status, appropriateness and reasonableness (ACARA 2015c)
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Examination
A supervised test that assesses the application of a range of cognitions to one or more provided items such as questions, scenarios and/or problems; student responses are completed individually, under supervised conditions, and in a set timeframe
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Examine
Investigate, inspect or scrutinise; inquire or search into; consider or discuss an argument or concept in a way that uncovers the assumptions and interrelationships of the issue
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Experiment
Try out or test new ideas or methods, especially in order to discover or prove something; undertake or perform a scientific procedure to test a hypothesis, make a discovery or demonstrate a known fact in science, an investigation that involves carrying out a practical activity
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Experimental
Relating to, derived from, or founded on experiment
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Explain
Make an idea or situation plain or clear by describing it in more detail or revealing relevant facts; give an account; provide additional information
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Explicit
Clearly and distinctly expressing all that is meant; unequivocal; clearly developed or formulated; leaving nothing merely implied or suggested
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Explore
Look into both closely and broadly; scrutinise; inquire into or discuss something in detail
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Express
Convey, show or communicate (e.g. a thought, opinion, feeling, emotion, idea or viewpoint); in words, art, music or movement, convey or suggest a representation of; depict
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Extend
In science, to extend an experiment is to modify the methodology to overcome limitations of the scope or applicability of the data
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Extended response
An open-ended assessment technique that focuses on the interpretation, analysis, examination and/or evaluation of ideas and information in response to a particular situation or stimulus; while students may undertake some research when writing the extended response, it is not the focus of this technique; an extended response occurs over an extended and defined period of time; an item on an examination may also require an extended response, either written or oral
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Extension subject
A two-unit subject for which a syllabus has been developed by QCAA; it is an extension of one or more general or alternative sequence subject/s; studied concurrently with the final two units of that subject/s or after completion of, the final two units of that subject/s
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Extensions
In science, modifications to an investigation that could be used to further examine a claim
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Extensive
Of great extent; wide; broad; far-reaching; comprehensive; lengthy; detailed; large in amount or scale
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External Assessment
Summative assessment that occurs towards the end of a course of study and is common to all schools; developed and marked by the QCAA according to a commonly applied marking scheme
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External Examination
A supervised test, developed and marked by the QCAA, that assesses the application of a range of cognitions to multiple provided items such as questions, scenarios and/or problems; student responses are completed individually, under supervised conditions, and in a set timeframe
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Extrapolate
Infer or estimate by extending or projecting known information; conjecture; infer from what is known; extend the application of something (e.g. a method or conclusion) to an unknown situation by assuming that existing trends will continue or similar methods will be applicable
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Extrapolation
Extension of a conclusion to a new situation with the assumption that existing trends will continue
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F
Factual
Relating to or based on facts; concerned with what is actually the case; actually occurring; having verified existence
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Familiar
Well-acquainted; thoroughly conversant with; well known from long or close association; often encountered or experienced; common; (of materials, texts, skills or circumstances) having been the focus of learning experiences or previously encountered in prior learning activities
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Feasible
Capable of being achieved, accomplished or put into effect; reasonable enough to be believed or accepted; probable; likely
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