Chemical/Physical Changes and Atoms

A particle made of 2 or more different atoms that are joined chemically is called

• compound

• molecule

• atom

• element

A ____________ change happens when the substance does not change.

• density

• physical

• mass

• chemical

The atomic number tells you how many __________ are in an atom

• atoms

• neutrons

• elements

• protons

An abbreviation that represents an element is called a _____

• symbol

• element

• compound

• molecule

A particle made up of 2 or more atoms that are joined chemically are called _______

• compounds

• molecules

• atoms

• elements

Melting chocolate is what kind of change?

• physical

• chemical

Smoke indicates what kind of change?

• physical

• chemical

A change in temperature indicates what kind of change?

• physical

• chemical

Ripping paper is what kind of change?

• physical

• chemical

A _______________ change happens when the substance changes.

• density

• mass

• physical

• chemical