#2 Final Exam Study Guide

Question 1

What is the formula to calculate density?

Answer 1

Density = Mass/Volume

Question 2

What is true about the volume and pressure about gas,

a) proportional
b) inversely proportional
c) neither

Answer 2

b

Question 3

One mole of any gas will occupy how much space?

Answer 3

22.4 L

Question 4

True or False, during a state of equilibrium, particles are still in motion.

Answer 4

True

Question 5

What is the formula to calculate pressure?

Answer 5

Force/Area

Question 5

30 degrees Celsius is how many degrees in kelvin?

Answer 5

303.15

Question 6

Do ideal gases exist in the real world?

Answer 6

No

Question 7

True or False, in molecular form, a chemical equation is balanced into its simplest form

Answer 7

False, in an empirical formula is when it would be put in simplest form.

Question 8

If you mix some table salt into a glass of water, which is the solute and which is the solvent?

Answer 8

Solute: Salt
Solvent: Water

Question 9

If you it took two pieces of bread and 1 slice of cheese to make a grilled cheese sandwich, what ingredient would be the limiting factor assuming you have 15 pieces of bread and 8 pieces of cheese.

Answer 9

Bread would be the limiting factor

Question 10

In the reaction 2KClO3 —-> 2KCl +3O2, what mass you would of KClO3 would you need to produce .50 moles of O2

Answer 10

41 grams

Question 11

Balance the following chemical equation,
_NaOH + _H2SO4 —-> _Na2SO4 + _H2O

Answer 11

2NaOH + 1H2SO4 —-> 1Na2SO4 + 2H2O

Question 12

What pH do all bases have to be above and all acids have to be below?

Answer 12

7.0

Question 13

What is the process in which a substance doesn’t melt and instead is able to go from a solid to gas?

Answer 13

Sublimation

Question 14

What byproducts are always produced in a combustion reaction?

Answer 14

H2O and CO2

Question 15

What is the total number of lone pairs in a central atom?

Answer 15

1

Question 16

Which type of bond shares electrons and which type of bond gives away electrons

Answer 16

Covalent bonds share electrons
Ionic bonds give away electrons

Question 17

What is the chemical formula for carbon monoxide?

Answer 17

CO

Question 18

What is the most commonly used nomenclature in chemistry?

Answer 18

International Union of Pure and Applied Chemistry (IUPAC)

Question 19

Does an atom have more electrons or protons

Answer 19

Atoms cannot be charged, hence they have the same amount. Ions can be charged and can have a different amount

Question 20

In general, on the periodic table, electronegativity increases as you go in what direction?

Answer 20

Increases as you move from left to right across a period and decreases as you move down a group

Question 21

What element has this electron configuration: 1s²2s¹

Answer 21

Lithium

Question 22

What is given about every element on the periodic table of elements.

Answer 22

Atomic number, atomic mass, and the chemical symbol. (Not the only correct answer)

Question 23

True or False, the nucleus in the atom only has protons while the outer ring has only electrons

Answer 23

False, the outer ring does only have electrons however, the nucleus has protons and neutrons

Question 24

How many grams are in a kilogram?

Answer 24

1,000

Question 25

Are all nonzero numbers considered significant?

Answer 25

Yes

Question 26

Is water a compound or element?

Answer 26

Compound

Question 27

Is mixing sand and water a chemical or physical change?

Answer 27

Physical change

Question 28

What are the three main types of matter?

Answer 28

Solid, liquid, and gas

Question 29

Name a chemical property.

Answer 29

Flammability, toxicity, solubility, heat from combustion, radioactivity, types of chemical bonds formed, coordination number, oxidization states, and acidity or basicity. (There are a lot more)