.

Question 1

What is the smallest unit of matter that retains the properties of an element?

Answer 1

An atom.

Question 2

True or False: Electrons have a positive charge.

Answer 2

False.

Question 3

Fill in the blank: The nucleus of an atom contains ______ and ______.

Answer 3

protons; neutrons.

Question 4

What is the charge of a proton?

Answer 4

Positive.

Question 5

Which particle has a negligible mass compared to protons and neutrons?

Answer 5

Electron.

Question 6

What is the term for the number of protons in the nucleus of an atom?

Answer 6

Atomic number.

Question 7

Multiple Choice: Which of the following has a neutral charge?
A) Electron B) Proton C) Neutron

Answer 7

C) Neutron.

Question 8

What determines the chemical properties of an element?

Answer 8

The arrangement of electrons.

Question 9

True or False: Isotopes of an element have the same number of protons but different numbers of neutrons.

Answer 9

True.

Question 10

What is the mass number of an atom?

Answer 10

The total number of protons and neutrons in the nucleus.