Chemistry: Atomic Structure

Question 1

Which subatomic particle has the smallest mass?

Accepted Answer

Electrons

Question 2

Which statement about subatomic particles is NOT true?

Accepted Answer

Protons and neutrons have the same charge

Question 3

True or False: Isotopes of the same element have the same number of protons

Accepted Answer

True

Question 4

Which of the following would be TRUE about oxygen-17 and oxygen-18?

Accepted Answer

They are isotopes of oxygen

Question 5

Which of Dalton’s key points explains the Law of Conservation of Mass?

Accepted Answer

Mass is neither created nor destroyed in a chemical reaction

Question 6

What is an electron's charge?

Accepted Answer

Negative

Question 7

What is a neutron's charge?

Accepted Answer

Neutral

Question 8

How are isotopes defined?

Accepted Answer

Atoms of the same element but different numbers of neutrons

Question 9

What model of the atom is represented in this image?

Accepted Answer

Plum Pudding Model

Question 10

Which statement about subatomic particles is TRUE?

Accepted Answer

An electron has far less mass than protons and neutrons

Question 11

This is the scientist who came up with the Plum Pudding Model

Accepted Answer

Thomson

Question 12

True or False: Isotopes of the same element have the same mass number

Accepted Answer

False

Question 13

What model of the atom is represented in this image?

Accepted Answer

Bohr’s Planetary Model

Question 14

Bromine-80 has an atomic number of 35. How many electrons and neutrons does it have?

Accepted Answer

Electrons = 35; Neutrons = 45

Question 15

If fluorine has a mass number of 19 and an atomic number of 9, how many electrons and neutrons does it have?

Accepted Answer

Electrons = 9; Neutrons = 10

Question 16

What did Rutherford conclude about the atom as a result of his Gold Foil experiment?

Accepted Answer

Protons are located in the nucleus

Question 17

Which of the following is NOT part of Dalton&#x27;s Atomic Theory?

Accepted Answer

Atoms contain subatomic particles

Question 18

Which scientist is responsible for the discovery of the nucleus?

Accepted Answer

Ernest Rutherford

Question 19

Which of the fundamental laws of chemistry says that some elements can combine to form more than one compound?

Accepted Answer

Law of Multiple Proportions

Question 20

The majority of the mass of an atom comes from which subatomic particles?

Accepted Answer

Protons and neutrons

Question 21

Which of the following subatomic particles have the same mass?

Accepted Answer

Protons and neutrons

Question 22

Oxygen and carbon always combine in a 1:2 mass ratio, no matter the amount of sample. This is an example of which law?

Accepted Answer

Law of Definite Proportions

Question 23

Why do atoms have an overall neutral charge?

Accepted Answer

The number of protons and electrons in an atom are equal

Question 24

What is a proton's charge?

Accepted Answer

Positive

Question 25

"Atomic Number" tells us how many of which subatomic particle?

Accepted Answer

Protons

Question 26

To find the number of neutrons in an atom, you would subtract...

Accepted Answer

Mass number - atomic number

Question 27

Which of the following is unique among from element to element?

Accepted Answer

Number of protons

Chemistry: Atomic Structure

Questions 27

Chemistry: Atomic Structure

Questions 27