Free Printable Chemistry Spring Final 25

1.

The $CO_2$ in the ocean is make it more ________.

a)

Basic

b)

Acidic

c)

Neutral

d)

water

2.

As the pH decreases in the ocean what molecule is less available to make sea shells?

a)

Calcium Carbonate

b)

Water

c)

Carbon Dioxide

d)

Hydrogen

3.

If a system (chemical equation) is said to be at equilibrium then the reaction rates of the forward and backwards reaction are said to be _____.

a)

equal

b)

different

c)

not related

d)

destructive

4.

What is the Molarity of a solution that has 6 moles of NaCl in 3 Liters of water?

a)

2 M

b)

0.5 M

c)

3 M

d)

4 M

5.

When making a solution the solid that is dissolved is called the ___________ and the liquid doing the dissolving is called the __________.

a)

solute, solvent

b)

solvent, solute

c)

acid, base

d)

hydrogen, oxygen

6.

At 50 C, 50 grams of $NH_4Cl$ solution is considered to be __________.

a)

saturated

b)

unsaturated

c)

supersaturated

d)

solvent

7.

What is the molarity of a solution with 522 grams of NaCl in a 6 Liter solution? (round molar mass to the nearest 1)

a)

1.5 M

b)

2 M

c)

15 M

d)

0.67 M

8.

The law of conservation of mass states

a)

Nothing ever changes

b)

Mass can not be created or destroyed

c)

Volume can not be created or destroyed

d)

Length can not be created or destroyed

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9.

MgCO₃ → MgO + CO₂ is what type of reaction?

a)

Synthesis

b)

Single Replacement

c)

Double Replacement

d)

Decomposition

10.

What are the coefficients for the balanced equation:

MgCO₃ → MgO + CO₂

a)

1, 1, 1

b)

1, 2, 1

c)

2, 1, 2

d)

2, 1, 1

11.

What type of reaction is Fe₂O₃ + H₂ → Fe + H₂O?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

12.

What are the coefficients for the below equation when balanced?

Sn + Cl₂ → SnCl₄

a)

1, 1, 1

b)

1, 2, 2

c)

1, 1, 2

d)

1, 2, 1

13.

If an element is a diatomic what is the subcript you must include on the element?

a)

1

b)

2

c)

3

d)

4

14.

What is Activation energy?

a)

The amount of energy for a reaction to begin

b)

The amount of energy for a reaction to end

c)

The amount of energy of a reaction

d)

The amount of energy a reaction releases

15.

Is a catalyst used up in a reaction?

a)

yes

b)

no

16.

For a reaction to occur what physically has to happen with the atoms?

a)

They must collide

b)

They must break down

c)

They must destroy each other

d)

They must be saturated

17.

If you increase the surface area, temperature, or concentration of a substance how does it affect the reaction rate of a reaction?

a)

Increases the reaction rate by increasing the number of collisions

b)

Decreases the reaction rate by increasing the number of collisions

c)

Increases the reaction rate by decreasing the number of collisions

d)

Decreases the reaction rate by decreasing the number of collisions

18.

How does a catalyst speed up a reaction rate?

a)

Increases the activation energy

b)

Decreases the activation energy

c)

Does not change the activation energy

19.

Using the balanced equation,

Mg (s) + 2 HCl (aq) → MgCl₂ (aq) + H₂ (g)

How many grams of HCl are consumed by the reaction of 2.50 moles of magnesium?

a)

5.00 g

b)

7.29 g

c)

182 g

d)

218 g

20.

Using the balanced equation,

Mg (s) + 2 HCl (aq) → MgCl₂ (aq) + H₂ (g)

How many moles of HCl are consumed in the production of 7.5 moles of MgCl₂?

a)

3.8 moles

b)

15 moles

c)

7.5 moles

d)

23 moles

21.

What is the molar mass of H₂O? (round to the nearest 1)

a)

2 g/mol

b)

18 g/mol

c)

16 g/mol

d)

33 g/mol

22.

C + O₂ → CO₂.

How many grams of CO₂ are produced from 10g of Carbon?

a)

5286 g

b)

36.6 g

c)

40.0 g

d)

10.0 g

23.

$\frac{233}{92}U\ \rightarrow\ \frac{4}{2}He\ +\ \frac{229}{90}Th$

What type of decay is the above equation?

a)

alpha

b)

beta

c)

gamma

24.

$\frac{99}{43}Tc\ +\ \frac{0}{-1}e\ \rightarrow\ \frac{99}{44}Ru$

What type of decay is the above equation?

a)

alpha

b)

beta

c)

gamma

25.

Which decay does NOT change the nucleus of an atom?

a)

alpha

b)

beta

c)

gamma

26.

What is the correct order of weakest to strongest decay?

a)

alpha, beta, gamma

b)

gamma, beta, alpha

c)

beta, gamma, alpha

d)

gamma, alpha, beta

27.

Is this following reaction a fission or a fusion reaction?

$\frac{3}{1}H\ +\ \frac{2}{1}H\ \rightarrow\ \frac{5}{2}He\$

a)

fusion

b)

fission

c)

alpha

d)

beta

28.

Find the missing element X in the following fission reaction:

$\frac{235}{92}U\ +\frac{1}{0}n\ \rightarrow\ \frac{138}{55}Cs\ +\ X\$

a)

$\frac{97}{37}Rb$

b)

$\frac{98}{37}Rb$

c)

$\frac{96}{38}Sr$

d)

$\frac{96}{35}Br$

29.

How many neutrons in the following isotope?

$\frac{73}{32}Ge$

a)

41

b)

-41

c)

20

d)

32

30.

Which isotope has 20 protons?

a)

Calcium-40

b)

Phosphorus-30

c)

Neon-20

d)

Magnesium-24

31.

What is the molar mass of PbSO₄?

a)

303.27 g/mol

b)

255.27 g/mol

c)

163.87 g/mol

d)

372.27 g/mol

32.

Shivani measures out 6.0 moles of epsom salt (MgSO₄) to put in her bath. How many grams of MgSO₄ went in the bath?

a)

3.6 x 10²⁴ g

b)

720 g

c)

0.050 g

d)

340 g

33.

Equilibrium for 2CrO₄^2- + 2H⁺→Cr₂O₇^2- + H₂O. What happens when OH^- ions are added to the system?

a)

Position of equilibrium will shift to right

b)

Color of system will turn from orange to yellow

c)

K_c will decrease

d)

OH^- ions will not react, and thus no change is seen.

34.

What 2 elements will make an ionic bond?

a)

Na and Cl

b)

O and F

c)

S and Cl

d)

P and I

35.

What is the chemical formula for Magnesium (Mg) Fluoride (Fl)?

a)

MgF₂

b)

MgF

c)

Mg₂F

d)

F₂Mg

36.

What is the charge (oxidation) of the Iron (Fe) ion in the chemical formula

FeCl₃

a)

Iron (III)

b)

Iron (II)

c)

Iron (IV)

d)

Iron

37.

What is the chemical formula of Copper (II) phosphide.

a)

Cu₃P₂

b)

Cu₂P₃

c)

CuP

d)

PCu

38.

What is the chemical formula for ammonium phosphide (P)?

a)

(NH₄)₃P

b)

NH₄P₃

c)

NH₄P

d)

P(NH₄)₃

Chemistry Spring Final 25

Total questions: 38

Worksheet time: 36mins

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