Question 1

Which subatomic particle is responsible for the positive charge of the nucleus?

Accepted Answer

Proton

Question 2

What is the approximate ratio of the size of the electron cloud to the nucleus?

Accepted Answer

$$1:1,000,000$$

Question 3

Which statement best describes the location of electrons in an atom?

Accepted Answer

Electrons orbit the nucleus in the electron cloud.

Question 4

If an atom has 8 protons, 8 neutrons, and 8 electrons, what is its net charge?

Accepted Answer

$$0$$

Question 5

Which force holds protons and neutrons together in the nucleus?

Accepted Answer

Nuclear Force

Question 6

Why do electrons not collapse into the nucleus despite their opposite charges?

Accepted Answer

Electrostatic attraction is balanced by their kinetic energy.

Question 7

Which of the following statements is FALSE?

Accepted Answer

The nucleus has an overall negative charge.

Question 8

A stable atom must have which of the following?

Accepted Answer

A balance between nuclear force and electrostatic force

Question 9

Which subatomic particle does NOT contribute to the charge of the nucleus?

Accepted Answer

Neutron

Question 10

If an atom loses one electron, what is its resulting charge?

Accepted Answer

$$+1$$

Question 11

Which of the following best explains why the nucleus is much smaller than the atom?

Accepted Answer

The electron cloud occupies most of the atom's volume.

Question 12

What is the charge of a neutron?

Accepted Answer

$$0$$

Question 13

Which of the following is true about protons and electrons?

Accepted Answer

They have equal magnitude but opposite sign charges.

Question 14

Which statement best describes the role of neutrons in the nucleus?

Accepted Answer

Neutrons help stabilize the nucleus by offsetting proton repulsion.

Question 15

If an atom has 12 protons, 12 neutrons, and 10 electrons, what is its net charge?

Accepted Answer

$$+2$$

Question 16

Which force causes protons in the nucleus to repel each other?

Accepted Answer

Electrostatic Force

Question 17

Which of the following is NOT a subatomic particle found in the atom?

Accepted Answer

Photon

Question 18

Which of the following best describes the nucleus of an atom?

Accepted Answer

A dense region containing protons and neutrons

Question 19

What is the main difference between nuclear force and electrostatic force in the nucleus?

Accepted Answer

Nuclear force attracts protons and neutrons, while electrostatic force repels protons.

Question 20

Which of the following would result if the electrostatic force in the nucleus were stronger than the nuclear force?

Accepted Answer

Protons would repel each other and the nucleus would break apart.

Atomic Structure and Forces in the Nucleus: GOB Chemistry Study Notes

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