Free Printable Reactions Test Review

1.

$\ldots N_2+\ldots H_2\ \rightarrow\ \ldots NH_3$

(a)

2.

$\ldots KClO_3\ \rightarrow\ \ldots KCl\ +\ \ldots O_2$

(a)

3.

$\ldots NaCl\ +\ \ldots F_2\ \rightarrow\ \ldots NaF\ +\ldots Cl_2$

(a)

4.

$\ldots H_2\ +\ldots O_2\ \rightarrow\ \ldots H_2O$

(a)

5.

$\ldots CH_4\ +\ \ldots O_2\ \rightarrow\ \ldots CO_2\ +\ \ldots H_2O$

(a)

6.

$\ldots C_3H_8\ +\ \ldots O_2\ \rightarrow\ \ldots CO_2\ +\ \ldots H_2O$

(a)

7.

$\ldots P\ +\ \ldots O_2\ \rightarrow\ \ldots P_2O_5$

(a)

8.

$\ldots S_8\ +\ \ldots O_2\ \rightarrow\ \ldots SO_3$

(a)

9.

$\ldots Na\ +\ \ldots H_2O\ \rightarrow\ \ldots NaOH\ +\ \ldots H_2$

(a)

10.

What is the molar mass of table salt (NaCl)?

a)

116.886 g/mol

b)

35.453 g/mol

c)

22.990 g/mol

d)

58.443 g/mol

11.

What is the molar mass of NaOH?

a)

40 g/mol

b)

38.989 g/mol

c)

23.998 g/mol

d)

57.004 g/mol

12.

What is the molar mass of CO₂?

a)

12

b)

16

c)

32

d)

44

13.

Calculate the molar mass for Al(OH)₃

a)

78.0 g/mol

b)

72 g/mol

c)

28 g/mol

d)

25 g/mol

14.

Calculate the molar mass of water (H₂O).

a)

10 g/mol

b)

17 g/mol

c)

18 g/mol

d)

34 g/mol

15.

Calculate the molar mass of Cu₂O.

a)

37 g/mol

b)

45 g/mol

c)

79.5 g/mol

d)

143 g/mol

16.

Calculate the molar mass of Ba(C₂H₃O₂)₂

a)

255.3 g/mol

b)

237.3 g/mol

c)

228.3 g/mol

d)

196.3 g/mol

17.

What id the molar mass of UF₆?

a)

101 g/mol

b)

238 g/mol

c)

257 g/mol

d)

352 g/mol

18.

Calculate the molar mass of NH₄NO₂

a)

50 g/mol

b)

60 g/mol

c)

64 g/mol

d)

78 g/mol

19.

A formula with the lowest whole # ratio of elements in a compound is called

a)

Molecular Formula

b)

Chemical Formula

c)

Empirical Formula

d)

Distance Formula

20.

What is the empirical formula for C₄H₆?

a)

CH

b)

CH₃

c)

C₂H₃

d)

C₄H₆

21.

Which pair has the same empirical formula?

a)

NaCrO₄ and Na₂Cr₂O₇

b)

C₂H₄O₂ and C₆H₁₂O₆

c)

C₃H₆O₃and C₂H₆O₂

d)

CH₄ and C₂H₆

22.

Napthalene has the chemical formula C₁₀H₈. What would be the empirical formula?

a)

C₁₀H₈

b)

C₅H₄

c)

C₂₀H₁₆

d)

CH₂

e)

C₄H₃

23.

Glucose has the formula C₆H₁₂O₆. Maltose has the chemical formula C₁₂H₂₂O₁₁. Do the have the same empirical formula?

a)

Yes

b)

No

24.

Which one is the empirical formula?

Si₂F₆

a)

SiF

b)

Si₂F₆

c)

SiF₃

d)

Si₆F₂

25.

Which one is the empirical formula?

C₂₅H₄₅

a)

C₂₅H₄₅

b)

CH

c)

C₅H₉

d)

C₉H₅

26.

What percentage of the total atomic mass of carbon monoxide (CO) is composed of carbon?

a)

29%

b)

43%

c)

57%

d)

73%

27.

What percentage of the total atomic mass of carbon monoxide (CO) is composed of oxygen?

a)

29%

b)

43%

c)

57%

d)

73%

28.

What percentage of the total atomic mass of magnesium bromide (MgBr₂) is composed of magnesium?

a)

13%

b)

43%

c)

63%

d)

87%

29.

What percentage of the total atomic mass of magnesium bromide (MgBr₂) is composed of bromine? Hint - consider the mass of both atoms of bromine in your calculation.

a)

13%

b)

43%

c)

63%

d)

87%

30.

What percentage of the total atomic mass of lithium phosphide (Li₃P) is composed of phosphorus?

a)

13%

b)

29%

c)

40%

d)

60%

31.

What percentage of the total atomic mass of calcium nitrate (Ca(NO₃)₂) is composed of nitrogen? Hint - another way to think of calcium nitrate is Ca(NO₃)(NO₃).

a)

17%

b)

24%

c)

29%

d)

59%

32.

What is the percent by mass of fluorine in CaF₂(gram-formula mass = 78 g/mol)?

a)

24%

b)

49%

c)

51%

d)

65%

33.

Which type of reaction is:

H₂ + O₂ → H₂O

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

34.

Which type of reaction is:

NiCl₂ → Ni + Cl₂

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

35.

Which type of reaction is:

MgI₂ + Br₂ → MgBr₂ + I

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

36.

Which type of reaction is:

NaCl + AgNO₃ → NaNO₃ + AgCl

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

37.

Which type of reaction is:

PbCl₂ + AgNO₃ → Pb(NO₃)₂ + AgCl

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

38.

Which type of reaction is:

NH₃ + HCl → NH₄Cl

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

39.

Which type of reaction is:

Al(OH)₃ → Al₂O₃ + H₂O

a)

Decomposition

b)

Double Displacement

c)

Synthesis

d)

Single Displacement

40.

Which type of reaction is:

3Ca + 2AlCl₃ --> 3CaCl₂+2Al

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

41.

In which type of reaction do two or more substances combine to form one new compound?

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

42.

In which type of reactions does one compound break down to form two or more simpler substances?

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

43.

In which type of reaction does one element take the place of another element in a compound?

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

44.

In which type of reaction do the ions of two compounds switch places?

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

45.

What reaction has the following general formula:

AB --> A + B

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

46.

What reaction has the following general formula:

A + CD --> C + AD

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

47.

What reaction has the following general formula:

AB + CD --> CB + AD

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

48.

What reaction has the following general formula:

A + B --> AB

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

49.

What type of reaction is K₂CO₃ → K₂O + CO₂

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Combustion

e)

None of these

50.

What type of reaction is CH₄ + O₂ → CO₂ + H₂O

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Combustion

e)

None of these

51.

In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B should have?

a)

4g

b)

5g

c)

9g

d)

14g

Reactions Test Review

Total questions: 51

Worksheet time: 3hrs 38mins

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