Quiz about Elements and Compounds Review

Question 1

Which is the best description of an element?

Accepted Answer

A substance that cannot be broken down into simpler substances

Answer

A collection of atoms that have different abilities when joined together

Answer

A man-made mineral

Answer

A mixture of substances

Question 2

Which one is a compound?

Accepted Answer

NaCl

Answer

Ni

Answer

F

Answer

Re

Question 3

How many different elements are in the compound?

Accepted Answer

3

Answer

12

Answer

24

Answer

6

Question 4

The place where known elements are represented...

Accepted Answer

The Periodic Table

Answer

Compounds

Answer

Chemical Formula

Answer

Graph

Question 5

One way to tell how many elements a compound has is to...

Accepted Answer

count the capital letters

Answer

multiply the number

Answer

add up all the numbers

Answer

count the letters

Question 6

A substance that consists of 2 or more different elements is a...

Accepted Answer

compound

Answer

element

Answer

data table

Answer

symbol

Question 7

Which of the following represents an element?

Accepted Answer

H2

Answer

H2O

Answer

NaCl

Answer

CaCO3

Question 8

What is made up of two or more elements that are chemically combined?

Accepted Answer

Compound

Answer

Element

Answer

Mixture

Answer

Solids

Question 9

How many elements are represented in the compound?

Na₂CO₃

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 10

How many elements are represented in the compound?

Na₂CO₂H₂C

Accepted Answer

4

Answer

5

Answer

2

Answer

3

Question 11

Which of the following is not a compound?

Accepted Answer

Cl

Answer

HCl

Answer

NaCl

Answer

CO2

Question 12

Which answer choice cannot be broken down into other substances?

Accepted Answer

Element

Answer

Compound

Answer

Mixture

Answer

Solids

Question 13

Which answer choice is made up of two or more elements that are chemically combined?

Accepted Answer

Compound

Answer

Element

Answer

Mixture

Answer

Solids

Question 14

How many Elements are in this compound?

CuSO₄

Accepted Answer

3

Answer

1

Answer

4

Answer

5

Question 15

Which element is found in the ocean and the atmosphere?

Accepted Answer

Oxygen

Answer

Sodium

Answer

Hydrogen

Answer

Nitrogen

Question 16

Which answer can be found on the periodic table?

Accepted Answer

Element

Answer

Compound

Question 17

Which element does the chemical symbol AI stand for?

Accepted Answer

Aluminum

Answer

Gold

Answer

Actinium

Answer

Iron

Question 18

Which element is found in the atmosphere, ocean, living things, and the earth's crust?

Accepted Answer

Oxygen

Answer

Chlorine

Answer

Aluminum

Answer

Hydrogen

Question 19

All of the following elements are in Earth's crust except-

Accepted Answer

Sodium

Answer

Oxygen

Answer

Alumunim

Answer

Silicon

Question 20

I am anything that has mass and takes up space! What am I?

Accepted Answer

matter

Answer

energy

Answer

molecules

Answer

atoms

Question 21

How many different elements are in this chemical formula:

C₂H₂ClK₃

(that is an L not an I)

Accepted Answer

4

Answer

6

Answer

8

Answer

2

Question 22

Which of the following chemical symbols is written correctly?

Accepted Answer

C

Answer

ee

Answer

hE

Answer

CL

Question 23

Which of the following chemical symbols for bromine is written correctly?

Accepted Answer

Br

Answer

bR

Answer

BR

Answer

br

Question 24

Which of the following can be found on the periodic table?

Accepted Answer

Element

Answer

Compound

Answer

MIxture

Question 25

When two or more elements chemically combine a _____________ is formed.

Accepted Answer

compound

Answer

element

Answer

mixture

Answer

solution

Question 26

Which of the following is a pure substance containing only one kind of atom?

Accepted Answer

element

Answer

mixture

Answer

compound

Question 27

True or False: Elements are pure substances.

Accepted Answer

True

Answer

False

Question 28

True or False: Compounds are pure substances.

Accepted Answer

True

Answer

False

Question 29

Which of the following is an example of an element?

Accepted Answer

Al2

Answer

MgNaO3

Answer

NaCl

Question 30

Compounds are represented by a _________________.

Accepted Answer

Chemical Formula

Answer

Chemical Symbol

Question 31

Elements are represented by _______________.

Accepted Answer

Chemical Symbol

Answer

Chemical Formula

Question 32

The smallest unit of an element that has all of the properties of that element.

Accepted Answer

Atom

Answer

Element

Answer

Compound

Answer

Mixture

Question 33

The two most common elements found in the oceans are-

(Remember oceans are made up of water.)

Accepted Answer

Oxygen and Hydrogen

Answer

Sodium and Nitrogen

Answer

Oxygen and Aluminum

Answer

Iron and Carbon

Question 34

What is the most abundant element found in the earth's atmosphere?

Accepted Answer

Nitrogen

Answer

Oxygen

Answer

Sulfur

Answer

Argon

Question 35

Carbon is considered an element, while carbon dioxide is considered a compound. This is because carbon dioxide is-

Accepted Answer

made up of two different elements.

Answer

a gas at room temperature.

Answer

given off by green plants.

Answer

useful to human beings.

Question 36

Which of the following is the most abundant element on the Earth's crust?

Accepted Answer

Oxygen

Answer

Calcium

Answer

Iron

Answer

Potassium

Question 37

All of the following elements are major components of living things on Earth EXCEPT.

Accepted Answer

sulfur

Answer

nitrogen

Answer

carbon

Answer

oxygen

Question 38

What does the C represent?

Accepted Answer

chemical symbol

Answer

atomic mass

Answer

atomic number

Answer

element name

Elements and Compounds Review

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