Chemistry Final Exam Review Pt. 1

Front

What is the smallest particle of an element that retains the properties of that element?

Back

atom

Front

Which of the following cannot be classified as a substance: table salt, air, nitrogen, gold?

Back

air

Front

What is the sum of the protons and neutrons in an atom called?

Back

mass number

Front

What do isotopes of the same element have different numbers of?

Back

numbers of neutrons

Front

Which statement is true about subatomic particles: Electrons are negatively charged and are the heaviest subatomic particle; Protons are positively charged and the lightest subatomic particle; Neutrons have no charge and are the lightest subatomic particle; The mass of a neutron nearly equals the mass of a proton?

Back

The mass of a neutron nearly equals the mass of a proton.

Front

What is the definition of an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What are the three main subatomic particles?

Back

Protons, neutrons, and electrons.

Front

What charge do protons carry?

Back

Positive charge.

Front

What charge do electrons carry?

Back

Negative charge.