Grade 12 College Preparation Chemistry - Final Exam Review - BNC

Question 1

The approximate molar mass of CH4 gas is:

Accepted Answer

16

Question 2

If we dissolve 0.50 mol of NaCl into 2.0 L of water, what is the molar concentration?

Accepted Answer

0.25 mol/L

Question 3

When diluting a solution, one can:

Accepted Answer

add water to the solution

Question 4

How many grams of NO2 are produced if 16.0 g O2 are formed? 2Pb(NO3)2 --> 2PbO + 4NO2 + O2

Accepted Answer

92.0 g

Question 5

What is the m/m % of 10 g of chromium solute in 40 g steel alloy solution?

Accepted Answer

25%

Question 6

Which one of the following is organic?

Accepted Answer

C2H6

Question 7

The Arrhenius definition of acids states that acids:

Accepted Answer

will make H+ ions in water

Question 8

What is the % yield if 9.9 g PbO are made in theory, but actually produce 5.5 g of PbO?

Accepted Answer

56%

Question 9

What is the chemical name for the compound with the formula Mg3P2?

Accepted Answer

magnesium phosphide

Question 10

What is the atomic number for fluorine?

Accepted Answer

9

Question 11

Which one of the following is an example of qualitative analysis?

Accepted Answer

looking at flame test colours

Question 12

Which one of the following is a greenhouse gas?

Accepted Answer

ozone

Question 13

What is the coefficient for Cl2 in the equation: Fe + Cl2 --> FeCl3

Accepted Answer

3

Question 14

The octet rule states that, in chemical compounds, atoms tend to have ____

Accepted Answer

the same number of total electrons as the nearest noble gas

Question 15

A covalent bond in which electrons are shared unequally is:

Accepted Answer

Polar

Question 16

What is the chemical formula for sodium nitride?

Accepted Answer

Na3N

Question 17

How many valence electrons are in an atom of magnesium?

Accepted Answer

2

Question 18

Which of the following elements does NOT form an ion with a charge of +1?

Accepted Answer

fluorine

Question 19

What gas has the greatest percent abundance in Earth's atmosphere?

Accepted Answer

nitrogen

Question 20

2 Al + 3 CuSO4 --> Al2(SO4)3 + 3 Cu [how many grams of Cu form from reaction of 51g of Al?]

Accepted Answer

180 g

Question 21

A solution made from solid metals is called:

Accepted Answer

an alloy

Question 22

In the reaction 2CO + O2 --> 2CO2 what is the ratio of moles of oxygen to moles to CO2?

Accepted Answer

1:2

Question 23

Which one of the following is SOLUBLE in water?

Accepted Answer

sodium nitrate

Question 24

Oxidation is:

Accepted Answer

increase in oxidation number

Question 25

Which one of the following is TRUE about the CATHODE of a galvanic cell?

Accepted Answer

gains electrons

Question 26

The atomic mass of phosphorous is closest to:

Accepted Answer

31

Question 27

The equation Mg + 2HCl --> MgCl2 + H2 is an example of what type of reaction?

Accepted Answer

single displacement

Question 28

Which one of the following has the highest boiling point?

Accepted Answer

decane

Question 29

What is the coefficient for HCl in the equation: Mg + HCl --> MgCl2 + H2

Accepted Answer

2

Question 30

How many valence electrons are in an atom of phosphorus?

Accepted Answer

5

Question 31

The number of moles of a substance can be calculated many ways, including this one:

Accepted Answer

m ÷ M

Question 32

Molar mass is:

Accepted Answer

the mass of 6.02 X 1023 particles of a substance

Question 33

What are the missing coefficients for the equation: Cr + Fe(NO3)2 --> Fe + Cr(NO3)3

Accepted Answer

2,3,3,2

Question 34

The number of moles per liter of a solution is defined as its:

Accepted Answer

molarity

Question 35

Which one of the following is not likely to increase the rate of corrosion of a metal?

Accepted Answer

vegetable oil

Question 36

Covalent bonds:

Accepted Answer

share electron pairs

Question 37

Which one of the following is the strongest type of inter molecular bond?

Accepted Answer

hydrogen bonds

Question 38

The equation H3PO4 + 3KOH --> K3PO3 + 3H2O is best described as what type of reaction?

Accepted Answer

neutralization

Question 39

Which statement is true if 12 mol of CO and 12 mol of Fe2O3 react? 3CO + Fe2O3 --> 2Fe + 3CO2

Accepted Answer

the limiting reactant is CO and 8.0 mol of Fe will be formed

Question 40

What are the coefficients that will balance the equation: AlCl3 + NaOH --> Al(OH)3 + NaCl?

Accepted Answer

1,3,1,3

Question 41

What is the name of an organic molecule with double bonds?

Accepted Answer

alkene

Question 42

Which one of the following has 6 carbon atoms in it?

Accepted Answer

hexanoic acid

Question 43

When aluminum nitrate reacts with lithium sulfate, the correct products would be:

Accepted Answer

Al2(SO4)3 and LiNO3

Question 44

Electrolysis is:

Accepted Answer

changing electrical energy into chemical energy

Question 45

A chemical bond that is formed when two atoms share electrons is called a(n):

Accepted Answer

covalent bond

Question 46

Us the activity series to predict the products of: Ag + KNO3 --> _____

Accepted Answer

No reaction

Question 47

Chemistry is best described as:

Accepted Answer

the study of matter

Question 48

Which one of the following is an alcohol?

Accepted Answer

2-propanol

Question 49

Which of the forces of intermolecular attraction are the weakest?

Accepted Answer

london dispersion

Question 50

The reaction 2Fe + 3Cl2 --> 2FeCl3 is an example of which type of reaction?

Accepted Answer

synthesis

Question 51

What are the coefficients that will balance the equation: N2 + H2 --> NH3

Accepted Answer

1,3,2

Grade 12 College Preparation Chemistry - Final Exam Review - BNC

Questions 51

Grade 12 College Preparation Chemistry - Final Exam Review - BNC

Questions 51