Physical Science Chapter 16

A(n) ______ is matter that is composed of one type of atom.

• compound
• mixture
• element
• molecule

The smallest piece of an element that still retains the properties of the element is a(n) ______.

• atom
• molecule
• compound
• plasma

The nucleus of an atom is ______ charged.

• positively
• liquid
• variably
• negatively

Neutrons have ______ charge.

• positive
• negative
• variable
• no

Electrons have ______ charge.

• positive
• negative
• variable
• no

Protons have ______ charge.

• positive
• negative
• variable
• no

True or False: Protons are made of neutrons.

• True
• False

True or False: The number of protons in an atom is the mass number.

• True
• False

Atoms of the same element with different numbers of neutrons are called _____________.

• ions
• isotopes
• groups
• rows

An atom has 10 protons, 10 electrons, and 13 neutrons. Its mass number is _____.

• 10
• 20
• 23
• 33