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6th Unit 2 Les.4 5 6
Properties of Matter
Term | Definition |
---|---|
Acid | a substance that has a pH below 7, tastes sour, and makes blue litmus paper turn pink or red. |
Base | a substance that has a pH above 7, tastes bitter, and makes red litmus paper turn blue. |
chemical bond | a force that holds atoms together. |
chemical change | a change in matter that produces a new substance with different properties from the original. |
chemical equation | a way to represent a chemical reaction by using symbols for the amount of reactants and products in the change. |
chemical property | the way a substance reacts with other substances. |
chemical reaction | a process that produces chemical changes |
law of conservation of mass | a physical law that states that matter is not created or destroyed during a chemical reaction. |
Neutralization | the chemical change of an acid and a base into water and a salt. |
physical change | a change in size, shape, or state that does not form a new substance. |
Precipitate | a solid formed by the chemical reaction of two liquids. |
Product | the new substance produced in a chemical reaction. |
Reactant | an original substance at the beginning of a chemical reaction. |
Reactivity | how easily something reacts with something else. |