Free Printable Chemical reactions

1.

How many Oxygen are in H₂O?

a)

1

b)

2

c)

0

d)

4

2.

2H₂ + O₂ ----> 2H₂O What is the product?

a)

------>

b)

2H₂O

c)

2H₂+ O₂

3.

How many O's are in Al₂(SO₄)₃

a)

4

b)

12

c)

7

d)

24

4.

How many elements are in C₆H₁₂O₆?

a)

1

b)

2

c)

3

d)

4

5.

Number of N in (NH₄)₂CrO₄

a)

1

b)

2

c)

8

d)

16

6.

Number of N in (NH₄)₂CrO₄

a)

1

b)

2

c)

8

d)

16

7.

A subscript is the small number below a(n) ________ that tells the number of _______ of that element.

a)

element symbol; atoms

b)

atom; element symbol

c)

subscript; protons

d)

compound; elements

8.

How many O's are in Al₂(SO₄)₃

a)

4

b)

12

c)

7

d)

24

9.

How many elements are in this chemical formula?

$H_2SO_4$

a)

1

b)

2

c)

3

d)

4

10.

How many atoms of Carbon are in this formula? $C_{6\ }H_{12}O_6$

a)

6

b)

1

c)

12

11.

What elements are represented in this chemical formula? $Fe_2O_3$

a)

Iron, Oxygen

b)

Francium, Europium, Oxygen

c)

Ferrium, Oxygen

d)

Berylium, Oxygen

12.

What is the total number of atoms in this formula? $H_2O_2$

a)

2

b)

4

c)

3

13.

How many more atoms of Oxygen than than Magnesium are in this formula? (subtraction) $MgSO_4$

a)

4

b)

3

c)

2

d)

6

14.

Is this an element or a compound? $CaSO_4$

a)

Element

b)

Compound

15.

What is the total number of atoms in this chemical formula? $C_8H_3NaBr_{12}$

a)

18

b)

12

c)

25

d)

24

16.

Which element has the greatest number of atoms? $AgNO_3$

a)

Silver

b)

Gold

c)

Nitrogen

d)

Oxygen

17.

Molecules that are made of more than one type of atom are called?

a)

Molecules

b)

Elements

c)

Mixtures

d)

Compounds

18.

How many elements are in this chemical formula? $NaHCO_3$

a)

1

b)

2

c)

3

d)

4

19.

How man atoms of carbon are there?

a)

1

b)

2

c)

3

d)

4

20.

How many atoms of Iron are in this compound?

a)

1

b)

2

c)

3

d)

4

21.

How many atoms of hydrogen are in

C₆H₁₂O₆

a)

6

b)

12

c)

18

d)

2

22.

How many different elements are present in H₂COCH₂

a)

5

b)

4

c)

3

d)

2

23.

Calculate the number of Oxygen atoms in Al(OH)₃

a)

1

b)

2

c)

3

d)

4

24.

How many elements are in this chemical formula? $NaHCO_3$

a)

1

b)

2

c)

3

d)

4

25.

C₃H₅(NO₃)₃

a)

C = 3, H = 5, N = 3, O = 9

b)

C = 3, H = 5, N = 1, O = 9

c)

C = 9, H = 15, N = 3, O = 9

d)

C = 9, H = 15, N = 1, O = 3

26.

How many atoms of Calcium are in this equation?

H₃O₅CaCl₇

a)

3

b)

5

c)

1

d)

7

27.

How many atoms of Carbon are in this equation?

HʒC₅O₄

a)

3

b)

1

c)

5

d)

4

28.

How many total atoms in the following equation?

ClN₆Fe₂

a)

6

b)

8

c)

10

d)

9

29.

How many elements are in this chemical formula?

HCl

a)

1

b)

2

c)

3

d)

4

30.

What is the total number of atoms in this formula? $H_2O_2$

a)

2

b)

4

c)

3

31.

How many atoms are there TOTAL in:
H₂SO₄

a)

6

b)

5

c)

7

d)

3

32.

Which is the correct formula for:
three hydrogen (H)
one sulfur (S)
four oxygen (O)

a)

H₃SO₄

b)

HSO₄

c)

H₄S₃O

d)

H₂O

33.

How many different types of Elements are in the compound C₂H₈O ?

a)

2

b)

1

c)

3

d)

0

34.

How many atoms of H are in this compound

a)

1

b)

2

c)

3

d)

4

35.

How many C atoms are in this compound?

H₂C₃O₄N₅

a)

2

b)

3

c)

4

d)

5

36.

A subscript is the small number below a(n) ________ that tells the number of _______ of that element.

a)

element symbol; atoms

b)

atom; element symbol

c)

subscript; protons

d)

compound; elements

37.

How many atoms of hydrogen are in

C₆H₁₂O₆

a)

6

b)

12

c)

18

d)

2

38.

How many atoms are there TOTAL in H₂SO₄?

a)

6

b)

5

c)

7

d)

3

39.

NaCl is the chemical formula for salt. Is NaCl considered a compound or an element?

a)

element

b)

compound

c)

both

d)

neither

40.

We breathe oxygen. Its chemical formula is O_2. Is this formula an element or a compound?

a)

element

b)

compound

c)

neither

d)

both

41.

Glass bottle that is shattered

a)

Chemical Change

b)

Physical Change

42.

Baking soda and vinegar combine to make carbon dioxide

a)

Chemical Change

b)

Physical Change

43.

Two or more different elements chemically combine to form compounds.

a)

Agree

b)

Disagree

44.

Can be broken down into a simpler substance

a)

Elements

b)

Compounds

c)

Both

45.

Represented by an unique chemical symbol

a)

Elements

b)

Compounds

c)

Both

46.

Located on the Periodic Table

a)

Elements

b)

Compounds

c)

Both

47.

Cannot be broken down into a simpler substance

a)

Elements

b)

Compounds

c)

Both

48.

This picture represents which of the following?

a)

element

b)

compound

49.

This picture represents which of the following?

a)

element

b)

compound

50.

This picture represents which of the following?

a)

element

b)

compound

51.

This picture represents which of the following?

a)

element

b)

compound

52.

This picture represents which of the following?

a)

element

b)

compound

53.

This picture represents which of the following?

a)

element

b)

compound

54.

A compound consists of two or more elements bound together.

a)

True

b)

False

55.

Which of the following represents an element?

a)

H₂O

b)

H₂

c)

NaCl

d)

CaCO₃

56.

Is Iron (Fe) an element or a compound?

a)

Element

b)

Compound

57.

These can only be separated by chemical means.

a)

element

b)

compound

c)

mixture

d)

stuff

58.

These contain only one kind of atom.

a)

element

b)

compound

c)

mixture

d)

water

59.

The air is a _________.

a)

element

b)

mixture

c)

compound

d)

energy

60.

Salt is a _________.

a)

compound

b)

element

c)

mixture

Chemical reactions

Total questions: 60

Worksheet time: 1hrs 23mins

Similar Resources on Wayground