Free Printable Semester 2 Chemistry Final

1.

A reaction that shows a substance being broken down into simpler substances, is what type of reaction?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

2.

Which element will have a higher electronegativity than Arsenic (As) ?

a)

Carbon

b)

Antimony

c)

Germanium

d)

Neon

3.

$WO_3+H_2\ \rightarrow\ W+H_2O\$
Balance the following equation. How many moles of hydrogen gas are needed for this reaction?

a)

1

b)

2

c)

3

d)

4

4.

$CCl_4$

name the compound above

a)

carbon chloride

b)

carbon chloride (IV)

c)

monocarbon chloride

d)

carbon tetrachloride

5.

ionization energy is defined as....

a)

the energy required to add an electron to a specific atom

b)

how much energy it takes to remove an electron from an atom

c)

the energy required to shield the outer electrons from the nucleus

d)

a measure of the ability of an atom to attract electrons

6.

How many atoms are in 1 mole of NaCl?

a)

11 atoms

b)

17 atoms

c)

58 atoms

d)

$6.02\ x\ 10^{23}$ atoms

7.

$AB+CD\ \rightarrow\ AD\ +\ CB$

What type of reaction is modeled by the equation above?

a)

Decomposition

b)

Synthesis

c)

Single Replacement

d)

Double Replacement

8.

Fill in both blanks: Positively charged particles are called ___(1)____ and are written first in a compound because they are ___(2)____.

a)

(1) cations (2) nonmetals

b)

(1) anions (2) nonmetals

c)

(1) cations (2) metals

d)

(1) anions (2) metals

9.

How many moles are in 20 grams of calcium?

a)

0.5

b)

1

c)

3

d)

20

10.

$\left(NO_3\right)^{-1}$
Fill in the blanks: the compound above is an example of a ___(1)___ ion and it is called ___(2)____.

a)

(1) polyatomic (2) nitrate

b)

(1) polyatomic (2) nitrite

c)

(1) polyatomic (2) nitride

d)

(1) covalent (2) nitrate

11.

$3\ Mg+1\ Fe_2O_3\ →\ 3\ MgO+2\ Fe$

For the balanced reaction above, what is the mole ratio of moles of Mg to moles of Fe?

a)

3 mol Mg / 2 mol Fe

b)

1 mol Fe / 2 mol Fe

c)

2 mol Mg / 3 mol Fe

d)

3 mol MgO / 2 mol Fe

12.

You need 2 pieces of bread, 1 tablespoon of peanut butter and 2 tablespoons of jelly to make a sandwich. If you have 10 pieces of bread, 4 tablespoons of peanut butter and 20 tablespoons of jelly, what is the limiting reactant?

a)

bread

b)

jelly

c)

peanut butter

d)

sandwhich

13.

How many moles are in 7.2 grams of carbon?

a)

0.7625 moles of C

b)

86.479 moles of C

c)

0.599 moles of C

d)

74.396 moles of C

14.

$Al_2S_3$
Name the compound above according to the correct nomenclature.

a)

aluminum sulfide

b)

ammonium sulfide

c)

dialuminum trisulfide

d)

aluminum (II) sulfide

15.

What are the coefficient used to balance the equation below?

__Ag₂O →__ Ag +___O₂

a)

2,4,1

b)

2,1,2

c)

1,1,1

d)

2,2,2

16.

$Ca+AlCl_3$

The reactants above undergo a single replacement reaction, predict the products formed

a)

$CaCl_2+Al$

b)

$Ca_3Al+Cl_2$

c)

$Ca\ +\ Al^{+3}+\ Cl_2$

d)

$CaAlCl_3$

17.

2NaClO₃ (s) → 2NaCl (s) + 3O₂ (g)

12.00 moles of NaClO₃ will produce how many grams of O₂?

NaClO₃ = 106.44 g/mol ; O₂ = 32.00 g/mol

a)

256 g of O₂

b)

288 g of O₂

c)

576 g of O₂

d)

384 g of O₂

18.

$2H_2+O_2\rightarrow\ 2H_2O$

What type of reaction is the one above?

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

19.

Which element has the smallest atomic radii?

a)

Lithium (Li)

b)

Rubidium (Rb)

c)

Aluminum (Al)

d)

Iodine (I)

20.

$CuS+Al−>Al_2S_3+Cu$
(1) balance the chemical reaction above
(2) identify the type of reaction

a)

(1) 3, 2, 1, 3 (2) double replacement

b)

(1) 6, 4, 1, 3 (2) synthesis

c)

(1) 3, 2, 1, 3 (2) single replacement

d)

(1) 6, 4, 2, 3 (2) single replacement

Semester 2 Chemistry Final

Total questions: 20

Worksheet time: 39mins

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