Free Printable EASE 3 Chemistry Simulation

1.

NaClrepresents

a)

Sodium bicarbonate

b)

Sodium carbonate

c)

Sodium Chloride

d)

Calcium Carbonate

2.

CaCO₃represents

a)

Sodium bicarbonate

b)

Sodium carbonate

c)

Sodium Chloride

d)

Calcium Carbonate

3.

How many oxygen atoms are there in a molecule of C₆H₁₂O₆?

a)

1

b)

2

c)

12

d)

6

4.

What is the chemical formula of magnesium chloride?

a)

MgCl

b)

MgCL₂

c)

MgCl₂

d)

MgC₂

5.

What is the chemical formula of ammonium nitrate?

a)

NH₄NO₃

b)

(NH₄)₂NO₃

c)

(NH₄)NO₃

6.

Balance the equation:

KI + Br_{2 -->}I₂+ KBr

a)

2KI + Br₂--> I₂+ KBr

b)

KI + Br₂ --> I₂ + 2KBr

c)

2KI + Br₂--> I₂ + 2KBr

d)

KI + Br_{2 -->}I₂+ KBr

7.

True/False: There are 2 reactants in the chemical equation below. $H_2\ +\ Cl_{2\ }\rightarrow\ HCl\$

a)

True

b)

False

8.

Which compounds are the PRODUCTS of this reaction?

a)

CO₂ + H₂O

b)

C₆H₁₂O₆ + O₂

c)

C₆H₁₂O₆+ CO₂

d)

H₂O + O₂

9.

Which are the reactants in the following reaction?

2Mg + O₂ ---> 2MgO

a)

2MgO

b)

2Mg +O

c)

2Mg + O₂

10.

How many atoms of Na, C and O are represented in $2Na_2CO_3$ ?

a)

Na = 1; C = 1; O = 3

b)

Na = 4; C = 2; O = 6

c)

Na = 2; C = 1; O = 3

d)

Na = 4; C = 1; O = 3

11.

Balance this chemical equation $C_5H_{12}+O_2\ →\ CO_2+H_2O$

a)

$C_5H_{12}+O_2\ →\ CO_2+6H_2O$

b)

$C_5H_{12}+4O_2\ →\ 5CO_2+6H_2O$

c)

$C_5H_{12}+8O_2\ →\ CO_2+6H_2O$

d)

$C_5H_{12}+8O_2\ →\ 5CO_2+6H_2O$

12.

What is the left part of a chemical equation called?
2H_{2 +}O₂ --> 2H₂O

a)

Reactants

b)

Products

c)

Yields

d)

Chemical Equation

13.

What is the right part of a chemical equation called...
2H_{2 +}O₂ --> 2H₂O

a)

Reactants

b)

Products

c)

Yields

d)

Chemical Equation

14.

Fe + S → FeS

0.8 moles of Fe are allowed to react an excess of S. What is the mass of FeS produced?

(A_r of Fe = 56, A_r of S = 32)

a)

25.6 g

b)

44.8 g

c)

70.4 g

d)

88 g

15.

Calculate the number of moles in 25.25g of KNO₃(K = 39.098, N = 14.006, O = 1.0078)

a)

4.5

b)

0.25

c)

0.45

d)

45

16.

Calculate the mass of 0.5 mol of NaOH (Na = 23, O = 16, H = 1)

a)

15g

b)

10g

c)

20g

d)

40g

17.

A compound has the empirical formula CH₂O, and an Mr of 180. What is its molecular formula?

a)

C₆H₁₁O₆

b)

6CH₂O

c)

5(CH₂O)

d)

C₆H₁₂O₆

18.

A mole of carbon disulfide contains 6.02 x 10²³_____. Below are compatible to fill in the blank, except...

a)

atoms

b)

ions

c)

electron

d)

molecules

19.

What is the mass of one mole of aluminum?

a)

27 g

b)

13 g

c)

54 g

d)

14 g

20.

What is the volume of 5 moles of oxygen gas at STP?

a)

112 dm3

b)

22.4 dm3

c)

120 dm3

d)

24 dm3

21.

What is the volume of 3 moles of hydrogen gas at STP?

a)

67.4 dm3

b)

61.72 dm3

c)

67.2 dm3

d)

89.6 dm3

22.

What is the number of moles of N₂ that contains 9.03 x 10²³molecules?

a)

0.667

b)

1.50

c)

33.6

d)

42.0

23.

Pick 1

a)

Fahri abi

b)

Ahzan abi

c)

Zubayr abi

d)

Yang penting alim

EASE 3 Chemistry Simulation

Total questions: 23

Worksheet time: 6hrs 45mins

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