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PS.5.1.1

Vocabulary

TermDefinition
Mass The amount of matter in an object.
Weight A measure of the pull of gravity on an object's mass.
Conservation of Matter Matter cannot be created or destroyed; it only changes form.
Closed System A setup where nothing enters or leaves, so matter is conserved.
Substance A type of matter with the same properties throughout.
Dissolve When a substance seems to disappear into a liquid but is still present.
Physical Change A change in size, shape, or state that does not make a new substance.
Evaporation A liquid changing to a gas.
Melting A solid changing to a liquid.
Freezing A liquid changing to a solid.
Compare To find similarities and differences.
Evidence Proof or data that supports a claim.
Properties Characteristics or traits of matter such as color, texture, or hardness.
Interaction What happens when substances act together.
Cause and Effect A relationship where one event makes another happen.
Total / Combined / Altogether Words in math or science problems that signal adding masses together.
Remain / Left Over Words that signal conservation — matter stays the same.
Destroyed / Created / Lost / Gained Distractor words that are almost always wrong in conservation questions.
Created by: cormiej
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