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Matter and Energy

Unit 1 Lesson 1

TermDefinition
matter anything that has mass and takes up space
mass amount of matter
weight measure of gravitational force
volume amount of space an object takes up
density measure of the amount of mass
physical property characteristic that can be observed without changing the substance
chemical property substances ability to change into a new substance
physical change change that affects the physical properties of the substance
chemical change substance changes into an entirely new substance
law of conservation of mass mass is not created nor destroyed by chemical or physical changes
atom smallest unit of an element
element made of one or more of the same type of atom
compound different types of atoms chemically combined
mixture variety of elements that are not chemically combined
pure substances substance that has definite chemical and physical properties
heterogeneous mixture that doesn't have a uniform composition
homogeneous substances are evenly spread throughout the mixture
solid definite volume and shape
liquid definite volume but not shape
gas doesn't have a definite volume or shape
freezing liquid becomes a solid
melting solid becomes a liquid
evaporation liquid becomes a gas
boiling rapid change from a liquid to a gas
condensation gas to a liquid
sublimation solid to a gas
deposition gas to a solid
Created by: 18sculline1111
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