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Chemical an element or compound
Chemical change a chemical reaction; a process that changes substances into new substances (related word: chemical reaction)
Physical reaction a change in matter that does not affect its chemical composition
Chemical reaction a chemical change; a process that changes substances into new substances (related word: chemical change)
Acid any substance with a pH less than 7; acids turn blue litmus paper red
Atom the smallest unit of an element that has the properties of that element
Matter material that has mass and takes up some amount of space
Compound a chemical combination of two or more elements
Molecule two or more atoms joined together
Element a pure substance that cannot be broken down into simpler substances by chemical reactions
Created by: 12049602