Free Printable Chemical reaction Quiz

1.

What reaction has the following general formula:

AB --> A + B

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

2.

What reaction has the following general formula:

A + CD --> C + AD

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

3.

What reaction has the following general formula:

AB + CD --> CB + AD

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

4.

What reaction has the following general formula:

A + B --> AB

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

5.

What reaction has the following general formula:
$C_xH_y\ +\ O_2\ ->CO_{2\ }+\ H_2O$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

6.

What is the general reaction scheme for a single replacement reaction?

a)

A + B --> AB

b)

AB --> A + B

c)

A + CD --> C + AD

d)

AB + CD --> CB + AD

e)

$C_xH_y+O_2\ ->\ CO_2+H_2O$

7.

What type of reaction is the following:
$BaCl_2+2KI\ ->\ 2KCl\ +\ BaI_2$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

8.

What type of reaction is the following:
$2KI\ ->\ 2K\ +\ I_2$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

9.

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

10.

What is a coefficient?

a)

The small number on the right of the chemical symbol.

b)

The large number to the left of a formula.

11.

A capital letter or combination of a capital letter and a small letter that is used to represent an element is called a(n) ________

a)

Element symbol

b)

Element sign

c)

Atomic Number

d)

Atomic Mass

12.

How many atoms are present if there is no subscript following the element symbol?

a)

0

b)

2

c)

only 1

d)

1 million

13.

How many atoms are in this chemical formula: (NH₄)₂SO₄

a)

12

b)

15

c)

4

d)

10

14.

How many elements are in this chemical formula: Zn(NO₃)₂

a)

3

b)

7

c)

5

d)

12

15.

In a chemical formula, the coefficient tells you the number of ______________.

a)

atoms

b)

elements

c)

compounds

d)

molecules

16.

The red numbers in the image below represent ________

a)

subscripts

b)

coefficients

c)

I don't know, and don't want to try

d)

None of the answers are correct

17.

The blue numbers in the image below represent ________

a)

I don't know, and don't want to try

b)

coefficients

c)

subscripts

d)

none of the answers are correct

18.

The substances at the beginning of a chemical equation are called the ____

a)

product

b)

yield

c)

chemical symbol

d)

reactants

19.

What is a chemical equation?

a)

A short way to show a chemical reaction using symbols

b)

A way to explain a chemical reaction using words

20.

5CO_{2
How many molecules are there? How many elements?}

a)

5 molecules, 2 elements

b)

2 elements, 5 molecules

c)

10 atoms, 5 elements

d)

15 elements, 2 molecules

21.

Name ALL the evidences that show a chemical reaction has occurred.

a)

color, gas, light

b)

light, precipitate, odor,

c)

color, gas, light, temperature, precipitate

d)

temperature, smell, light, conductivity, taste

22.

In a chemical reaction, everything to the rightof the arrow is called ______________.

a)

Products

b)

Yields

c)

Molecules

d)

Reactants

23.

4 NaCl represents several molecules of table salt. How many atoms of chlorine are present in this example?

a)

1

b)

4

c)

8

24.

5 N₂O represents the laughing gas you might have at the dentist. How many atoms of nitrogen are present here?

a)

1

b)

2

c)

7

d)

10

25.

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

a)

6

b)

1

c)

12

Chemical reaction Quiz

Total questions: 25

Worksheet time: 27mins

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