Unit 3 vocabulary

describes the amount of matter in an object

• matter

• mass

• element

• chemical change

a characteristic of a substance that can be observed or measured without changing the identity

• Physical Property-

• Law of Conservation of Mass

• Element

• Pure substance

states that in ordinary chemical and physical changes, mass is not created or destroyed

• electrons

• protons

• Law of Conservation of energy

• Law of Conservation of Mass

the amount of space that an object takes up, or occupies

• Law of Conservation of Mass

• Volume

• Weight

• Element

anything that has mass and takes up space

• matter

• volume

• atom

• compound

the smallest unit of an element that maintains the properties of that element

• density

• atom

• compound

• element

a measure of the amount of mass in a given volume

• Atom

• Physical Property

• Chemical Change

• Density

a change that affects one or more physical properties of a substance

• Law of Conservation of Mass

• Chemical Change

• Physical Change

• Chemical Property

describes a substance’s ability to change into a new substance with different properties

• Chemical change

• Chemical Property

• Physical Property

• Law of Conservation of Mass-

made up of one or more of the same kind of atom chemically combined

• density

• atom

• compound

• element