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Year 8 Chem Vocab

TermDefinition
Data measurements and observations about something
Primary data data you collect yourself from an experiment
Secondary data data you have not found through an experiment; sources can be textbooks, encyclopedias, internet etc.
Mistake things that affect your measurements but can be avoided with care; mistakes are not errors
Error small changes to measurements that cannot be avoided, even with care
Hypothesis an ‘educated guess’ about what might happen in an experiment
Independent variable the variable changed by you; it will probably cause a change in the dependent variable
Dependent variable the variable that is being measured in an experiment; it changes as the independent variable changes
Controlled variable the variable that is kept constant throughout an experiment
Fair test when only one variable is changed in an experiment
Element substances made up of only one type of atom
Metal substances that have a metallic shine, conduct heat and electricity, and can be hammered into sheets and drawn into wires
Malleable able to be hammered or bent into new shapes
Brittle easily crumbled or shattered
Non-metal substances that are usually dull (not shiny), do not conduct heat and electricity, and break or crumble
Periodic table a table that shows all the known elements
Molecule a cluster of atoms
Compound substances made of lattices or identical molecules with two or more types of atoms
Mixture any combination of two or more elements or compounds
Alloy a mixture of a metal with other metals or non-metals
Created by: knmangalath
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