Physical Science Ch 3

Question 1

The _____ is 1836 times the mass of an electron. The slightly more massive ____ is 1838 times the mass of an electron

Accepted Answer

proton; neutron

Question 2

Carbon-14 is different from Carbon-12 in that it has a different number of...

Accepted Answer

neutrons

Question 3

Which of the following NOT typically represented by WHOLE numbers?

Accepted Answer

atomic mass

Question 4

Which of the following represents a sodium atom that has lost an electron?

Accepted Answer

Na+

Question 5

Copper-63 and copper-65 can NEVER have the same number of...

Accepted Answer

neutrons

Question 6

Quantum mechanics is a branch of physics that deals with _____.

Accepted Answer

matter and energy at atomic and subatomic levels

Question 7

Most of an atom consists of empty space.

Accepted Answer

True

Question 8

This subatomic particle has a charge of -1e.

Accepted Answer

Electron

Question 9

What observation did NOT support Rutherford's belief of atoms mass and + charges being densely packed into a small space

Accepted Answer

Alpha particles emitted photons upon returning to their old energy levels

Question 10

Which of the following is NOT an appropriate biblical motivation for managing radiation exposure?

Accepted Answer

trusting God by ignoring the risk of radiation exposure.

Question 11

Potassium-39 and Potassium-41 always have the same number of...

Accepted Answer

protons

Question 12

a weighted average of the masses of all the naturally occurring isotopes.

Accepted Answer

atomic mass

Question 13

the total number of particles found in the nucleus of a given element

Accepted Answer

mass number

Question 14

Isotopes of an element always have the same number of protons.

Accepted Answer

False

Question 15

Ions are atoms that have unequal numbers of protons and neutrons.

Accepted Answer

False

Question 16

What is the currently accepted model of the atom?

Accepted Answer

the quantum-mechanical model

Question 17

This subatomic particle is the most massive of these three subatomic particles.

Accepted Answer

Neutron

Question 18

the number of protons found in the nucleus of given element

Accepted Answer

atomic number

Question 19

With which of these statements would John Dalton have disagreed?

Accepted Answer

Atoms can be divided into protons, neutrons, and electrons.

Question 20

The Bohr model is the most workable model to date.

Accepted Answer

True

Question 21

Subatomic particle in the nucleus and has no electrical charge.

Accepted Answer

Electron

Question 22

The law of electrostatic charges states that...

Accepted Answer

All of the above are true.

Question 23

Which of the following is NOT a reason why the Bohr model is still in widespread use today?

Accepted Answer

It is still the most workable model to date.

Question 24

Who first proved that atoms were divisible when he saw evidence of charged particles existing in the atom?

Accepted Answer

J.J. Thomson

Question 25

Which of the following is a WEIGHTED AVERAGE?

Accepted Answer

atomic mass

Question 26

The Bohr model suggests that electrons move...

Accepted Answer

only in distinct, spherical orbits at fixed distances from the nucleus.

Question 27

The discovery of electrons demonstrated that atoms are NOT indivisible.

Accepted Answer

True

Question 28

The quantity of this particle in an atom of a substance determines the atoms identity

Accepted Answer

Proton

Question 29

An anion has a negative charge because it has lost an electron.

Accepted Answer

True

Question 30

This subatomic particle has a charge of +1e.

Accepted Answer

Proton

Question 31

An anion has more ______ than ______.

Accepted Answer

electrons; protons

Question 32

Subatomic particle in the nucleus and has no electrical charge.

Accepted Answer

Neutron

Physical Science Ch 3

Questions 32

Physical Science Ch 3

Questions 32