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Elements and Compounds

Total questions: 38

Worksheet time: 36mins

Name
Class
Date
1.

The smallest particle of matter that makes up an element and a compound?

a)

Element

b)

Chemical

c)

Atom

d)

Substance

2.

Which statement best describes an element?

a)

pure, made of more than one type of atom

b)

when combined, a chemical reaction forms

c)

pure, made of only one type of atom

d)

can be broken down easily

3.
Which one can be found on the periodic table?
a)
Compound 
b)
Element
4.

Helium (He) is an example of an:

a)

Element

b)

Compound

c)

Solution

d)

Mixture

5.

Examples are water (H2O) and carbon dioxide (CO2).

a)

elements

b)

compounds

6.

When two or more different elements chemically combine, a __________________________ is formed.

a)

element

b)

compound

c)

mixture

d)

solution

7.

This picture represents which of the following?

a)

element

b)

compound

8.
a)
Element
b)
Compound
9.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
10.

A section of the Periodic Table is shown. What is the Chemical Symbol for Magnesium?

a)

12

b)

Magnesium

c)

24.31

d)

Mg

11.

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

a)

a gas at room temperature.

b)

made of two different elements.

c)

given off by green plants.

d)

useful to human beings

12.
Is sugar (C12H22O11) an element or a compound?
a)
Element
b)
Compound
13.
Is water an element or a compound?
a)
Element
b)
Compound
14.
A compound consists of two or more elements bound together.
a)
True
b)
False
15.
Is Iron (Fe) an element or a compound?
a)
Element
b)
Compound
16.
How many elements are represented in the compound?
Na2CO3
a)
1
b)
2
c)
3
d)
4
17.

The chemical symbol of an element always matches the element's name.

a)

Agree

b)

Disagree

18.

Cannot be broken down into a simpler substance

a)

Elements

b)

Compounds

c)

Both

19.

What is the difference between Co and CO?

a)

CO is an element but Co is a compound

b)

Nothing is different. They are the same thing.

c)

CO is two elements and Co is only one element

d)

Co is not a pure substance

20.

How many elements are in this compound?

a)

13

b)

6

c)

4

d)

3

21.

This picture represents which of the following?

a)

element

b)

compound

22.

This picture represents which of the following:

a)

element

b)

compound

23.

This picture represents which of the following?

a)

element

b)

compound

24.

This picture represents which of the following?

a)

element

b)

compound

25.

This picture represents which of the following?

a)

element

b)

compound

26.

This picture represents which of the following?

a)

element

b)

compound

27.

This picture represents which of the following?

a)

element

b)

compound

28.

This picture represents which of the following?

a)

element

b)

compound

29.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
30.
Which of the following could be a symbol on he periodic table of elements?
a)
JZ
b)
jz
c)
Jz
d)
JZa
31.
Which of the following an element?
a)
Carbonic Acid
b)
Copper
c)
Iron and Copper
d)
Water
32.
Which of the following is a compound?
a)
Co
b)
He
c)
CO
d)
H
33.
Compounds are represented by a...
a)
Capital Letter
b)
Chemical symbol 
c)
Chemical formula 
d)
Chlorine 
34.
Elements are represented by a...
a)
More than one capital letter
b)
Chemical symbol 
c)
Chemical formula 
d)
Oxygen 
35.
The chemical symbol O is used for what element?
a)
Cerium
b)
Cobalt 
c)
Oxygen
d)
Osmium
36.
The chemical symbol N is used for what element?
a)
Rubidium
b)
Gold
c)
Potassium
d)
Nitrogen
37.
How many different elements are represented in the compound?
C13H9N
a)
2
b)
3
c)
1
d)
4
38.
How many different elements are represented in the compound?
Fe3O4
a)
2
b)
3
c)
1
d)
4

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