Chem Lab Section 3.1-3.2 Review Quiz 2019

Question 1

Who further developed the theory of Atoms (based on scientific experimentation)?

Accepted Answer

Dalton

Question 2

An isotope of Boron, Boron-12, has 5 protons. How many protons does the isotope Boron-15 have?

Accepted Answer

5

Question 3

What did Democritus, Dalton, Thompson, and Rutherford all have in common?

Accepted Answer

They all contributed to the development of the atomic theory

Question 4

The term “atom” comes from the Greek philosopher named?

Accepted Answer

Democritus

Question 5

Why are atoms electrically neutral?

Accepted Answer

Protons and electrons cancel out each other’s charge.

Question 6

What evidence lead Rutherford to conclude the atom was mostly empty space?

Accepted Answer

Most alpha particles passed through

Question 7

In Thompson's plum-pudding model, the plums represent...

Accepted Answer

electrons

Question 8

Matter cannot be created or destroyed only rearranged.

Accepted Answer

Law of conservation of mass

Question 9

What evidence led Rutherford to conclude the nucleus was positively charged?

Accepted Answer

Alpha particles were repelled by the nucleus

Question 10

The majority of the mass of an atom comes from which subatomic particle(s)?

Accepted Answer

Neutrons + Protons

Question 11

What evidence made Thompson conclude the electron was negatively charged?

Accepted Answer

It was repelled by a negative plate

Question 12

Which scientist is responsible for the discovery of the nucleus?

Accepted Answer

Ernest Rutherford

Question 13

Atoms make up all matter is called the

Accepted Answer

atomic theory

Question 14

What is an atom that has the same number of protons but different number of neutrons?

Accepted Answer

an isotope

Question 15

What does mass number equal?

Accepted Answer

Neutrons + Protons

Question 16

Which part of Dalton’s atomic theory incorporates the Law of Conservation of Mass?

Accepted Answer

Atoms can be combined, separated, or rearranged.

Question 17

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

Accepted Answer

The atom is composed of mainly empty space.

Question 18

Which of parts of Dalton’s theory required revision?

Accepted Answer

Atoms are indivisible.

Question 19

An atom is the smallest unit of a substance that still has the properties of a substance.

Accepted Answer

True

Question 20

What is the neutral charged subatomic particle called

Accepted Answer

neutron

Question 21

How many electrons does Hafnium have?

Accepted Answer

72

Question 22

An atom of Silver with 47 protons, 47 electrons, and 61 neutrons would have a mass number of..

Accepted Answer

108

Question 23

All molecules exist in small whole number ratios.

Accepted Answer

Law of multiple proportions

Question 24

Thomson's plum pudding model was later disproven by the work of......

Accepted Answer

Rutherford

Question 25

How many protons does Yttrium have?

Accepted Answer

39

Question 26

What is the mass number for this element?

Accepted Answer

64

Question 27

Electrons are located in the nucleus.

Accepted Answer

False

Question 28

Which has the least mass?

Accepted Answer

electrons (1/1800 the mass of proton)

Question 29

All compounds have a unique mass ratio of elements no matter how much of compound present

Accepted Answer

Law of definite proportions

Question 30

Which of the terms below does the image represent.

Accepted Answer

Law of Conservation of Matter

Question 31

Where are Protons and Neutrons located?

Accepted Answer

Nucleus

Question 32

How do you determine how many Neutrons an element has?

Accepted Answer

Mass Number - Protons

Question 33

What is the atomic number for Carbon?

Accepted Answer

6

Question 34

Represents the number of particles found in the nucleus of an individual atom

Accepted Answer

mass number

Question 35

What is the Atomic Number of this element?

Accepted Answer

6

Question 36

Experiments with the cathode ray resulted in the discovery of?

Accepted Answer

Electrons

Question 37

What is the subatomic particle in the center of an atom that has no charge?

Accepted Answer

neutron

Question 38

Which of the terms below does the image represent.

Accepted Answer

Law of Multiple Proportions, Law of Definite Proportions

Question 39

Neutrons are located in the Nucleus.

Accepted Answer

True

Question 40

Which atomic theorist shot positively charged particles at a sheet of gold foil?

Accepted Answer

Rutherford

Question 41

Force which holds the atomic nucleus together.

Accepted Answer

Nuclear force

Question 42

The negative charged subatomic particle is called

Accepted Answer

electron

Question 43

Matter is composed of particles, atoms can't be subdivided, atoms of element are identical etc.

Accepted Answer

Dalton's Atomic Theory

Question 44

Who first developed the theory of the atom?

Accepted Answer

Democritus

Question 45

The weighted average of all naturally occurring isotopes of an element.

Accepted Answer

atomic mass

Question 46

Protons are found in the

Accepted Answer

nucleus

Question 47

How many protons does Titanium have?

Accepted Answer

22

Question 48

What is the mass number for Osmium?

Accepted Answer

190

Question 49

What is the sum of protons and neutrons in an atom?

Accepted Answer

mass number

Question 50

How do we know the number of protons in the nucleus of an atom?

Accepted Answer

atomic number

Question 51

An element will always have the same number of __________________________________

Accepted Answer

protons

Chem Lab Section 3.1-3.2 Review Quiz 2019

Questions 51

Chem Lab Section 3.1-3.2 Review Quiz 2019

Questions 51