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Types of Reactions and Reactivity

Total questions: 25

Worksheet time: 25mins

Name
Class
Date
1.

What type of reaction is this?

H2O + O2 →\rightarrow  H2O2

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Combustion

2.

Will the following single replacement reaction take place?

Ag + KNO3 →\rightarrow  ?

a)

Yes

b)

No

3.

What dictates whether a single replacement reaction will take place or not?

a)

Size of the element

b)

Reactivity

c)

Bond strength

d)

Polarity

4.

Which metal is the MOST reactive?

Lithium (Li), Magnesium (Mg), Lead (Pb), Gold (Au)

a)

Lead (Pb)

b)

Lithium (Li)

c)

Gold (Au)

d)

Magnesium (Mg)

5.

What are the products of a combustion reaction?

a)

CO and H2O

b)

O2 and N2

c)

CO2 only

d)

CO2 and H2O

6.

What is a Synthesis reaction?

a)

 A chemical reaction in which two or more chemicals bond to form one new substance.

b)

 One substance breaks down into two or more separate substances

c)

The exchange of ions between two compounds.

d)

 Oxygen combines with a compound and releases energy in the form of heat and light.

7.

Will the following reaction take place?

Cl2 + 2NaI →\rightarrow  ?

a)

Yes

b)

No

8.

Predict the product:

Ni + AgSO3 →\rightarrow  ?

a)

Ni + Ag + SO3

b)

Ni(SO3)2 + Ag

c)

No reaction

9.

Predict the product:

NaBr + I2 →\rightarrow  ?

a)

No reaction

b)

NaI + Br2

c)

BrI + Na

d)

Na2I + Br

10.

Predict the product:

2Ag2O →\rightarrow  ?

a)

4Ag + O2

b)

No reaction

c)

Ag + AgO

11.

Which product of the following reaction is considered a precipitant?

2AgNO3 (aq) + CaCl2 (aq) ----> 2AgCl (?) + Ca(NO3)2 (?)

a)

AgCl (s)

b)

Ca(NO3)2 (s)

c)

AgCl (aq)

d)

Neither they are both aqueous.

e)

Both are solid.

12.

PCl5 + ___ H2O → ___ HCl + H3PO4

a)

4, 5

b)

1, 6

c)

3, 8

d)

2,2

13.
Which side of a chemical equation is the reactant side?
a)
Left (before the yields sign)
b)
Right (after the yields sign)
14.
Which side of a chemical equation os the product side?
a)
Left (before the yields sign)
b)
Right (after the yields sign)
15.
Which problem is balanced?
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
16.

What type of reaction has one element replace another element within a compound?

a)

Double Replacement

b)

Synthesis

c)

Single Replacement

d)

Decomposition

17.
Balance this equation.
_SnO2 +_H2-->_Sn +_H2O
a)
1,1,2,1
b)
1,2,1,1
c)
1,2,1,2
d)
1,2,2,1
18.
What is the little number after an element in a chemical equation called.
Example: H2
a)
Coefficient 
b)
Subscript
c)
Atom
d)
Equation
19.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction. 
20.
Is the equation balanced?: 2H2O + O2 --> 4MgO + 3Fe
a)
Yes
b)
No
21.
How many atoms of aluminum are on each side of the following equation: 4Al + 3O2 --> 2Al2 O3
a)
2
b)
6
c)
1
d)
4
22.
When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
a)
charge
b)
subscript
c)
random number
d)
coefficient
23.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
24.

The two sides of a chemical equation are called?

a)

Reactants (left) and Products (right)

b)

Ingredients (left) and Product (right)

c)

Cations and Anions

d)

Reactants (left) and Results (right)

25.

Which of the following products will be a precipitant?

NaOH (aq) + CaBr2 (aq) ----> NaBr (?) + Ca(OH)2 (?)

a)

NaBr (s)

b)

Ca(OH)2 (s)

c)

Neither they are both aqueous.

d)

Both are solid

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