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Science 10 Review Chapter 3

Total questions: 25

Worksheet time: 39mins

Name
Class
Date
1.
The formula for iron (II) sulfide is...
a)
FeS
b)
Fe2S2
c)
Fe2S
d)
FeS2
2.
The formula for calcium phosphate is...
a)
Ca3P2
b)
Ca3(PO4)2
c)
Ca2(PO4)3
d)
CaPO4
3.
The formula for diphosphorus pentoxide is...
a)
P2O5
b)
P5O2
c)
PO
d)
PO4
4.
The name of CaBr2 is...
a)
calcium dibromide
b)
calcium (II) bromide
c)
calcium bromide
d)
monocalcium dibromide
5.
Which of the following statements is NOT true?
a)
Acids turn litmus paper red
b)
Ionic substances turn red litmus red and blue litmus blue
c)
Bases conduct electricity
d)
Molecular compounds conduct electricity
6.

Which of the following statements is true concerning acids and bases?

a)

acids and bases don't react with each other

b)

acids mixed with bases neutralize each other

c)

acids mixed with bases make stronger bases

d)

acids mixed with bases make stronger acids

7.

Which is the correct set of acid properties:

a)

sour taste, corrosive, change litmus from red to blue

b)

sour taste, corrosive, change litmus from blue to red

c)

sweet taste, slippery, change litmus from blue to red

d)

sour taste, slippery, change litmus from blue to red

8.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
9.

A solution with a pH of 8.6 would be a(n)

a)

Acid

b)

Base

c)

Neutral

d)

Acid and Base

10.
What does (aq) mean in a chemical reaction?
a)
Ag
b)
silver
c)
aqualirious
d)
aqueous
11.

Barium sulfate ( BaSO4 )

a)

Soluble

b)

Insoluble

12.

zinc carbonate

a)

Soluble

b)

Insoluble

13.
The law of conservation of mass states proves that...
a)
The mass of the reactants in a reaction is always more than the mass of the products
b)
The mass of the reactants in a reaction is always less than the mass of the products
c)
The mass of the reactants in a reaction is always the same as the mass of the products
d)
Energy is neither created nor destroyed.
14.
Fe2O3 + Cl2 --> FeCl3 + O2 
This equation balanced has the coefficients...
a)
1, 3, 2, 1
b)
1, 2, 2, 3
c)
1, 3, 2, 3
d)
2, 6, 4, 3
15.
___C3H8 +___O2 --> ___CO2 + ___H2O
a)
1,5,3,4
b)
2,10,6,8
c)
already balanced
d)
1,5,5,4
16.
CxHy +O2 --> H2O + CO2
a)
Decomposition
b)
Double replacement
c)
Combustion
d)
Single Replacement
17.
One reactant into several products.
a)
Decomposition
b)
Synthesis
c)
Combustion
d)
Single Replacement
18.
One element replaces another in a compound.
a)
Synthesis
b)
Combustion
c)
Single Replacement
d)
Double Replacement
19.

Which of the following reactions involves the ions of two compounds exchanging places to form two new compounds?

a)

Synthesis

b)

Double Displacement

c)

Combustion

d)

Single Displacement

20.

What are the 7 elements are always found as diatomics (two bonded together, like X2) when they are in their pure form (not part of a compound)?

a)

Br, I, N, Cl, H, O, F

b)

B, I, N, C, H, O, F

c)

B, R, O, F, In, C, H

d)

Br, I, Ni, C, Ho, F

21.

Sodium phosphate in solution reacts with silver nitrate solution to produce sodium nitrate solution and a silver phosphate precipitate.

a)

NaPO4(aq) + AgNO3(aq) --> NaNO3(aq) + AgPO4(s)

b)

Na3P (aq) + Ag3N (aq) --> Na3N (aq) + Ag3P (s)

c)

Na3PO4(aq) + 3AgNO3(aq) --> 3NaNO3(aq) + Ag3PO4 (s)

d)

NaP + AgN --> NaN + AgP

22.

"Solid zinc oxide is produced by combining zinc powder with oxygen gas." What is the correct skeleton equation for this reaction?

a)

ZnO (s) --> Zn (s) + O2 (g)

b)

ZnO (s) --> Zn + O (g)

c)

Zn (s) + O2 (g) --> ZnO (s)

d)

Zn + O --> ZnO

23.

"When heated, solid mercury(II) oxide decomposes into mercury liquid and oxygen gas." What is the correct skelton equation for this reaction?

a)

Hg (l) + O2 (g) --> Hg2O (s)

b)

Hg2O (s) --> Hg (l) + O (g)

c)

HgO (s) --> Hg (l) + O2 (g)

24.

Find the molar mass of CaCO3CaCO_3   

a)

100.09g

b)

100g

c)

100.2g

d)

101g

25.

Find the number of moles in 20 grams of NH3NH_3   

a)

17.04mol

b)

1.17mol

c)

11.7mol

d)

17.03mol

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