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Unit 1 Lesson 1-6


Matter Anything that has mass and takes up space
Mass Amount of matter in an object
Weight Measure of the gravitational force of an object
Volume Amount of space an object takes up
Density Measure of the amount of mass in a given volume
Physical Property Characteristic of a substance that can be observed and measured without changing the identity of the substance
Chemical Property Substances ability to change into a new substance with different properties
Physical Change Change that effects one or more physical properties of a substance
Chemical Change Occurs when one or more substances change into entirely new substances with different properties
Law of Conversation Matter States that in ordinary chemical and physical changes, mass is not created or destroyed but is only transformed into different substances
Atom The smallest unit of an element that maintains the properties of that element
Element Made up of one or more of the same kind of atom chemically combined
Compound Made up of different kinds of atoms chemically combined
Mixture Contains a variety of elements and compounds that are not chemically combined with each other
Pure Substance Pure substance is a substance that has definite physical and chemical properties such as appearance, melting point, and reactivity
Heterogeneous Mixture is one that does not have a uniform compsition
Homogeneous Substances are spread
Solid Substance that has a definite volume and shape
Liquid Definite volume but not shape
Gas No definite volume or shape
Freezing When a liquid becomes solid
Melting Solid to a liquid
Evaporating Liquid to gas
Boiling Liquid to gas rapidly
Condensation Gas to liquid
Sublimation Solid directly to a gas
Deposition Change in state from a gas directly to a solid
Created by: 18jkujath0526