Atoms Review!

Question 1

What two subatomic particles are located in the nucleus?

Accepted Answer

protons and neutrons

Question 2

In this chemical equation, H2O is called the ________.

Accepted Answer

Product

Question 3

In H2O what does the 2 represent ?

Accepted Answer

subscript

Question 4

In the molecule 3O2, how many total oxygen atoms are there ?

Accepted Answer

6

Question 5

How many neutrons are in Sodium (Na)?

Accepted Answer

12

Question 6

What is a substance that is made up of two or more different elements chemically combined ?

Accepted Answer

compound

Question 7

What does the following picture show?

Accepted Answer

chemical reaction

Question 8

Water (H20) is an example of a(n)

Accepted Answer

compound

Question 9

Is the following an example of a chemical or physical change?

Accepted Answer

Chemical

Question 10

How many total atoms are in CO2?

Accepted Answer

3

Question 11

A proton has (a)

Accepted Answer

postive charge

Question 12

What is anything that has mass and takes up space?

Accepted Answer

Matter

Question 13

Is the following equation balanced?

Accepted Answer

yes

Question 14

What is the atomic mass for Argon (Ar) ?

Accepted Answer

40

Question 15

Which law says that matter cannot be created or destroyed?

Accepted Answer

Law of Conservation of Mass

Question 16

NaCl is a

Accepted Answer

chemical formula

Question 17

What element is shown by the drawing below?

Accepted Answer

Hydrogen

Question 18

What are the 3 subatomic particles that make up an atom?

Accepted Answer

proton, neutron, and electron

Question 19

In this chemical equation, CaCO3 is called a _________.

Accepted Answer

reactant

Question 20

Is baking cookies an example of a chemical or physical change?

Accepted Answer

Chemical

Question 21

How many total atoms are in HCl?

Accepted Answer

2

Question 22

What is the core of an atom that is made up of protons and neutrons?

Accepted Answer

nucleus

Question 23

What two subatomic particles are located in the nucleus?

Accepted Answer

protons and neutrons

Question 24

Boron(B) is an example of a(n)

Accepted Answer

element

Question 25

Atomic mass - atomic number = ______________

Accepted Answer

# of neutrons

Question 26

What are the 3 subatomic particles that make up an atom?

Accepted Answer

proton, neutron, and electron

Question 27

Name 1 element that is found in all four; earth's crust, living matter, ocean, and atmosphere.

Accepted Answer

oxygen

Question 28

What is the atomic # for Neon?

Accepted Answer

10

Question 29

Sand (SiO2) is an example of a(n)

Accepted Answer

compound

Question 30

Is this an example of a chemical or physical change?

Accepted Answer

Physical

Question 31

How many protons are in Sulfur ?

Accepted Answer

16

Question 32

A neutron has

Accepted Answer

no charge

Atoms Review!

Questions 32

Atoms Review!

Questions 32