Atoms and Elements Unit Test

center of an atom

• compound

• proton

• neutron

• nucleus

substance made up of only one kind of atom

• compound

• element

• molecule

• electron

subatomic particle with a positive charge

• proton

• neutron

• electron

smallest unit of an element with all the properties of that element

• nucleus

• molecule

• atom

• compound

subatomic particle with no charge

• neutron

• proton

• electron

arrangement of elements by similar properties

• periodic table

• compound

• molecule

• element

substance made up of the atoms of two or more elements

• molecule

• element

• compound

• periodic table

two or more atoms joined together

• molecule

• compound

• element

subatomic particle with a negative charge

• proton

• neutron

• electron

Atoms are held together by the attraction between

• protons and neutrons

• protons and the nucleus

• electrons and neutrons

• electrons and protons