Semester 2 Final

Question 1

What’s Boyles Law?

Answer 1

V1P1 = V2P2

Volume and pressure are indirectly related

Question 2

What’s the Combined Gas Law?

Answer 2

(V1P1)/T1 = (V2P2)/T2

Question 3

What’s Gay-Lussac’s Law?

Answer 3

P1/T1 = P2/T2

Pressure and temperature are directly related

Question 4

Opposite of freezing

Solid and liquid

Answer 4

Melting

Question 5

Opposite of evaporation

Gas and liquid

Answer 5

Condensation

Question 6

Opposite of sublimation

Solid and gas

Answer 6

Deposition

Question 7

How to find pH/pOH

Answer 7

-log[OH-]/-log[H3O+]

Question 8

How to find [OH-]/[H3O+]

Answer 8

10^-pH/-pOH

Question 9

STP

Answer 9

22.4 L
0 C = 273K
1 atm= 760 mmHg= 101.3 kP

Question 10

How to find percent yield

Answer 10

Actual/Theoretical x 100

Question 11

How to find percent error

Answer 11

(Accepted- experimental)/accepted x 100

Question 12

Avogadro’s number

Answer 12

6.02 x 10^23

Question 13

Characteristics of acids

Answer 13

Sour
Red litmus paper
pH under 7

Question 14

Characteristics of bases

Answer 14

Slippery
Bitter
Blue litmus paper
pH over 7
Breaks down oils and fats

Question 15

Equation for neutralization of vinegar

Answer 15

CH3COOH + NaOH –> NaCH3COO + H2O

Question 16

How to find molarity

Answer 16

MaVa = MbVb

Question 17

What are the 7 diatomic elements?

Answer 17

N O F Cl Br I H

Come in pairs when alone

Question 18

Difference between exothermic and endothermic

Answer 18

Endothermic: absorbs heat (ends with more energy than started with)

Exothermic: releases heat (ends with less energy than started with)

Question 19

How to convert Celsius to kelvin

Answer 19

Add 273

Question 20

What is [OH-]?

Answer 20

Hydroxide ion concentration

Question 21

What is [H3O]?

Answer 21

Hydronium ion concentration

Question 22

What’s an electrolyte?

Answer 22

Substance that conducts electricity

acids, bases, salts

Question 23

Acid

Answer 23

A water-soluble compound that is capable of donating protons (H+ ions) to another substance

Question 24

Analyze

Answer 24

Substance that is being investigated

Ex: vinegar in titration lab

Question 25

Base

Answer 25

A water-soluble chemical compound that is able to accept protons (H+ ions) and donates hydroxide ions

Question 26

Dissociate

Answer 26

To break into smaller compounds

Question 27

Equivalence point

Answer 27

The point in a titration when there are equivalent amount of titrant and analyze so the two substances can react with nothing left over

Question 28

Indicator

Answer 28

A substance that changes color when in contact with an acid or base

Question 29

Litmus paper

Answer 29

Paper coated with an indicator called litmus, which is derived from a species of lichen

Question 30

Molarity

Answer 30

Measure of concentration equal to moles per liter

Question 31

Neutralize

Answer 31

To make an acidic or basic solution chemically neutral

Question 32

pH

Answer 32

Measure of concentration of hydrogen ions in solution

Question 33

Titrant

Answer 33

A substance of known composition and concentration that is used to react with an analyte

Question 34

Titration curve

Answer 34

Graph of a titration in which the amount of titrant is recorded on the x axis and the pH of the analyte is recorded on the y axis

Question 35

Salt

Answer 35

Compound containing a positive ion from a base and a negative ion from an acid

Question 36

What’s Charles Law?

Answer 36

V1/T1 = V2/T2

Volume and temperature are directly related

Question 37

Equitation for self-ionization of water

Answer 37

2H20 –> OH- + H3O+