Matter, Atoms, & Isotopes

Subatomic particle with a negative charge

• proton

• electron

• neutron

• nucleus

Subatomic particle with no charge

• proton

• neutron

• electron

• nucleus

The smallest unit of matter that retains the identity of a substance

• atom

• isotope

• proton

• nucleus

Anything that has mass and takes up space

• atom

• element

• matter

• molecule

The number of protons in the nucleus of an atom

• atomic mass

• atomic number

• isotope

• nucleus

equal to the number of protons plus neutrons in the nucleus of an atom

• atomic mass

• atomic number

• isotope

• valence electrons

each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons

• isotope

• cohesion

• molecule

• compound

The nucleus of an atom consist of:

• electrons

• protons and electrons

• protons and neutrons

• neutrons and electrons

Which of the following is NOT an example of matter?

• water

• air

• cake

• sunlight

Which of the following states of matter has a definite volume and a definite shape?

• solid

• liquid

• gas

• plasma