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April and May Science Vocabulary Words

Terms in this set (13)

physical property
A characteristic of a pure substance that can be observed without changing it into another substance
Density
Mass per unit volume
Mass
the amount of matter in an object
Volume
The amount of space an object takes up
chemical property
A characteristic of a pure substance that describes its ability to change into different substances
Flammability
A material's ability to burn in the presence of oxygen
Oxidation
A chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust
Reactivity
The ease and speed with which an element combines, or reacts, with other elements and compounds.
physical change
A change in a substance that does not involve a change in the identity of the substance. For example, ripping a piece of paper is a physical change.
chemical change
A change in matter that produces one or more new substances
Law of Conservation of Mass
Matter is not created nor destroyed in any chemical or physical change
Reactants
A starting material in a chemical reaction
Products
The elements or compounds produced by a chemical reaction.
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