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Chemistry S2 Final

Total questions: 40

Worksheet time: 40mins

Name
Class
Date
1.

T or F: For universal indicators the lighter the color means the more acidic the solution.

a)

True

b)

False

2.
What is the Law of Conservation of mass?
a)
Mass is created in a chemical reaction
b)
Mass is created in a physical change
c)
New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
d)
Mass is never created or destroyed
3.
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
4.
Matter can not be created nor destroyed: it can only be
a)
Destroyed a little bit
b)
Invisible
c)
Transformed, changed
d)
None of the above
5.
Which is Chemical Equation is Balanced?
a)
CH₄+O₂------CO₂+2H₂O
b)
H₂+O₂-----2H₂O₄
c)
4Al+3O₂-----2Al₂O₃
6.
How many nitrogen atoms does NH3 have?
a)
1
b)
2
c)
3
d)
4
7.
Is this equation balanced or unbalanced? 
2Fe2O3 + 3C --> 4Fe + 3 CO2
a)
balanced
b)
unbalanced
8.
How many oxygen atoms are in this chemical formula?
a)
6 oxygen atoms
b)
2 oxygen atoms
c)
3 oxygen atoms
d)
4 oxygen atoms
9.
Bob puts 200 grams of ice into a pitcher with 900 grams of water. He gets distracted and comes back later to find that the ice has melted in the water. How many grams of water does Bob now have in the pitcher?
a)
200 g
b)
700 g
c)
1,100 g
10.
24 g of magnesium reacts with 38 g of fluorine to produce _____ g magnesium fluoride
a)
62 
b)
38
c)
24
d)
14
11.
What is the law of conservation of mass?
a)
The amount of matter changes when reacted or changed.
b)
The mass of all reactants are changed during a physical or chemical change
c)
The mass of the reactants equals the mass of the products
d)
The mass of the products is different than the mass of the reactants.
12.

Which type of chemical reaction has the following configuration?


Substance + Substance --> Compound


A + B --> AB

a)

Combination/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

13.

Which type of chemical reaction has the following configuration?


Element + Compound --> Element + Compound


A + BC --> B + AC

a)

Combination/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

14.

Which type of chemical reaction has the following configuration?


Hydrocarbon + Oxygen --> Carbon Dioxide + Water


CxHy + O2 --> CO2 + H2O

a)

Combination/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

15.

What type of chemical reaction has the following configuration?


Ionic Compound(aq) + Ionic Compound(aq) --> Compound + Compound


AB(aq) + CD(aq) --> AD + BC

a)

Combination/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

16.

What type of chemical reaction has the following configuration?


Compound --> Substance + Substance


AB --> A + B

a)

Combination/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

17.

Classify the following chemical reaction


BaCl2(aq) + K2CrO4(aq) --> BaCrO4(s) + 2KCl(aq)




a)

Combination/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

18.

Classify the following chemical reaction.


Si(s) + 2Cl2(g) --> SiCl4(l)

a)

Combination/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

19.

Identify the type of chemical reaction pictured above

a)

Combination/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

20.
Another term for burning is
a)
Fire triangle
b)
Magnesium oxide
c)
Combustion
d)
Bustion
21.

Hydrocarbon fuel + oxygen ----> ___+____

(Select 2)

a)

CO2

b)

O2

c)

H2O

d)

CxHy

22.
What is essential for a combustion reaction to begin?
a)
Carbon dioxide
b)
Fuel 
c)
Fuel, oxygen and heat
d)
Water and oxygen
23.

8.7: Combustion is when a __________ reacts with oxygen

a)

petrol

b)

fuel

c)

fire triangle

d)

carbon dioxide

24.

True or False: Combustion is needed for cars that run on gasoline to move.

a)

True

b)

False

25.

is the amount of energy stored in a given system or region of space per unit volume. 

a)

Energy Density

b)

Green House gas effect

c)

Radiation

d)

calorimetry

26.

This occurs when greenhouse gasses in a planet's atmosphere trap some of the heat radiated from the planet's surface, raising its temperature.

a)

Hydrocarbons

b)

Green House gas effect

c)

Radiation

d)

calorimetry

27.

the process of measuring the amount of heat released or absorbed during a chemical reaction

a)

Hydrocarbons

b)

Green House gas effect

c)

Combustion

d)

calorimetry

28.

is a fuel made from vegetable oils, fats, or greases—such as recycled restaurant grease.

a)

petroleum fuels

b)

Biofuels

c)

Biodiesels

d)

Fuel

29.

  • a fuel derived directly from living matter.

a)

petroleum fuels

b)

Biofuels

c)

Biodiesels

d)

Fuel

30.

Crude oil and other hydrocarbons exist in liquid or gaseous form in underground pools, or reservoirs,

a)

petroleum fuels

b)

Biofuels

c)

Biodiesel

d)

Fuel

31.

Match the following

a)

1.

Biodiesel

b)

2.

Fuel

c)

3.

Hydrocarbon

d)

4.

petroleum fuels

e)

5.

BioFuel

32.

Using the table of average bond energies below the image, the ΔH for the reaction in kJ is.....

a)

+ 160 kJ

b)

-63 kJ

c)

- 160 kJ

d)

-217 kJ

33.

How much energy would be needed to separate this atom?

C-H Bond Energy: 413 kJ/mol

a)

413 kJ/mol

b)

826 kJ/mol

c)

1239 kJ/mol

d)

1652 kJ/mol

34.

What is the pH range of an acid?

a)

4-6

b)

1-7

c)

1-6

d)

8-14

35.

HF is...

a)

an acid

b)

a base

c)

a salt

d)

an ionic compound

36.

KOH is ...

a)

an acid

b)

a base

c)

a salt

d)

an ionic compound

37.
The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?
a)
3
b)
9
c)
7
d)
5
38.

According to this slide

a)

CO2 is causing marine life to die by "poisoning' the water

b)

CO2 is destroying sea shells

c)

CO2 is formed from the combustion of Octane

39.

In a more acidic ocean, the shells of organisms do not grow as easily.

a)

True

b)

False

40.

Which molecule makes water acidic?

a)

Carbonate Ions

b)

Carbon Dioxide

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