Vocabulary 5

The smallest particle of an element that has the chemical properties of that element

• Neutron

• Electron

• Atom

A positively charged particle located in an atom's nucleus.

• Electron

• Proton

• Neutron

A particle that has no electric charge and is located in an atom's nucleus.

• Neutron

• Electron

• Atom

A negatively charged particle located outside an atom's nucleus. It is about 2000 times smaller than either a proton or neutron

• Proton

• Electron

• Neutron

A substance that cannot be broken down into a simpler substance by ordinary chemical changes. It consists of atoms of only one type.

• Element

• Atomic Mass

• Atom

The number of protons in the nucleus of an atom.

• Atomic Mass

• Atomic Number

• Electrons

The total number of protons and neutrons in an atom

• Mass number

• Atomic Mass

• Atomic Number

The total number of protons and neutrons in an atom's nucleus.

• Atomic Number

• Atomic Mass

• Element

A horizontal row in the periodic table of the elements. Elements have varying properties.

• Proton

• Period

• Group

A vertical column in the periodic table of the elements. Elements have a similar properties.

• Group

• Period

• Nonmetal