Chapter 4 lesson 2: Structure of the Nuclear Atom

Question 1

What are three kinds of subatomic particles?

Answer 1

Three kinds of subatomic particles are electrons, protons, and neutrons

Question 2

Electrons

Answer 2

Symbol: e-
Relative charge: 1-
Relative mass: 1/1840

Question 3

Proton

Answer 3

Symbol: p+
Relative charge: 1
Relative mass: 1

Question 4

neutron

Answer 4

Symbol: Nº
Relative charge: 0
Relative: 1

Question 5

How can you describe the structure of the nuclear atom

Answer 5

In the nuclear atom, the protons and neutrons are located in the positively charged nucleus. The electrons are distributed around the nucleus and occupy almost all the volume of the atom.

Question 6

nucleus

Answer 6

the tiny central core of an atom and is composed of protons and neutrons.

Question 7

simple ideas about matter and electric charges

idea number one

Answer 7

Atoms have no net electric charge; they are

electrically neutral.

Question 8

simple ideas about matter and electric charges

idea number two

Answer 8

Electric charges are carried by particles of matter.

Question 9

simple ideas about matter and electric charges

idea number three

Answer 9

Electric charges always exist in whole-number
multiples of a single basic unit; that is, there are no
fractions of charges.

Question 10

simple ideas about matter and electric charges

idea number four

Answer 10

When a given number of negatively charged particles
combines with an equal number of positively charged
particles, an electrically neutral particle is formed.