Elements, Compounds & Mixtures Review

Question 1

A _____________ is a combination of two or more substances that are NOT chemically combined.

Accepted Answer

Mixture

Question 2

What is shown in box C?

Accepted Answer

Molecules, Elements

Question 3

What is shown in box B?

Accepted Answer

Compounds

Question 4

A molecule is formed when two or more atoms join together chemically.

Accepted Answer

True

Question 5

What is shown in box D?

Accepted Answer

Mixture

Question 6

N, O, Cu, Na, F, He and Ar are all examples of...

Accepted Answer

Chemical symbols

Question 7

Which of the following only contains one type of atom?

Accepted Answer

Element

Question 8

H2O is an example of a...

Accepted Answer

chemical formula

Question 9

What does square B show- an element compound or mixture?

Accepted Answer

Mixture

Question 10

These contain either 1 uppercase letter (H) OR 1 uppercase letter and 1 lowercase letter (He)

Accepted Answer

Chemical symbol

Question 11

In a mixture, each substance keeps its own properties.

Accepted Answer

True

Question 12

Is square C showing an element, mixture or compound?

Accepted Answer

Element

Question 13

Nitrogen, Oxygen, Carbon and Iron are all examples of ...

Accepted Answer

Elements

Question 14

Carbon Dioxide is an example of a ...

Accepted Answer

Chemical name

Question 15

This tells you how many of each element are in a chemical formula.

Accepted Answer

Subscript - O2

Question 16

A compound is formed when two or more different elements are joined together chemically.

Accepted Answer

True

Question 17

Is square D showing an element, compound or mixture?

Accepted Answer

Element

Question 18

Is square A showing an element, compound or mixture?

Accepted Answer

Compound

Question 19

What is shown in box A?

Accepted Answer

Elements

Question 20

Which of the following is a chemical formula?

Accepted Answer

NaCl

Questions 20