End of Year Chemistry

How many different subatomic particles are found within the atom

• 1

• 2

• 3

• 4

The subatomic particle with a negative charge

• proton

• neutron

• electron

• nucleus

The subatomic particle with a positive charge

• proton

• neutron

• electron

• nucleus

The subatomic particle with no charge

• proton

• neutron

• electron

• nucleus

a pure form of matter that cannot be broken down into simpler substances

• element

• atom

• subatomic particle

• nucleus

the smallest part of a chemical element that can exist

• element

• atom

• nucleus

• subatomic particle

the extremely dense center of an atom

• proton

• neutron

• electron

• nucleus

Atoms of the same element that have a different number of neutrons

• isotopes

• atomic mass

• atomic number

• mass number

the number of protons in an atom

• atomic number

• mass number

• chemical symbol

• atomic mass

The weighted average mass of all isotopes of an element

• atomic number

• atomic mass

• chemical symbol

• mass number