Chemistry Review Pages

Question 1

Pressure goes up

Temperature ____

Answer 1

Goes up

Question 2

Pressure goes up

Volume _____

Answer 2

Goes down

Question 3

Temperature goes up

Volume ______

Answer 3

Goes up

Question 4

Standard temperatures

Answer 4

0^C and 273K

Question 5

Standard pressures

Answer 5

101.3 kpa, 14.7 psi, 760 mmHg, 1 atmo

Question 6

Convert the following:

25^C=
455K=
47^C
100K=

Answer 6

298K
182^C
320K
-173^C

Question 7

Bromine vapor occupied a volume of 2.5 L at 57^C. To reduce the volume to 2.3 L, what must the temperature be adjusted to?

Answer 7

30.6^C

Question 8

Under standard conditions, a volume of a helium balloon occupies 10L. What volume would the balloon be under 725 mmHg of pressure?

Answer 8

10.5L

Question 9

A quantity of air has a volume of 30.8mL. The temperature is at 24^C and the barometer records the pressure 13 psi. What will the pressure be if the temperature was cooled to -57^C and the volume didn’t change?

Answer 9

9.45 psi

Question 10

Is melting ice endothermic or exothermic ?

Answer 10

Endothermic

Question 11

Is freezing ice endothermic or exothermic?

Answer 11

Exothermic

Question 12

If you mix 2 substances in a test tube and the test tube feels WARM, how would you describe the reaction?

Answer 12

Exothermic

Question 13

How much energy is absorbed by 100g of water that changed from 20^C to 40^C? (Specific Heat= 4.18 j/g^C)

Answer 13

8,360J

Question 14

To what temperature does a 500g chunk of aluminum go to when it starts at 20^C and absorbs 3000 joules of energy? (Specific Heat= 0.89 j/g^C)

Answer 14

26.74^C

Question 15

Which will take longer to raise the temperature: 10g of water or 10g of aluminum ? Explain

Answer 15

The water will take longer to heat because it has a higher specific heat

Question 16

What is the molarity of a solution containing 1.4 moles of KCl dissolved in 2.6L of solution?

Answer 16

0.54M

Question 17

How many grams of table salt (NaCl) are needed to make 3.4L of a 0.06M solution?

Answer 17

11.92g NaCl

Question 18

What does “like dissolves like” mean?

Answer 18

Polar dissolves polar

Nonpolar dissolves nonpolar

Question 19

Is HBr an acid or base?

Answer 19

Acid

Question 20

Is NaCl an acid or base?

Answer 20

Neither. It’s neutral

Question 21

NaOH: acid or base?

Answer 21

Base

Question 22

H2SO4: acid or base?

Answer 22

Acid

Question 23

If a substance is neutral, what is it’s pH?

Answer 23

7

Question 24

If a substance had a pH of 4, is it an acid, base, or neutral?

Answer 24

Acid

Question 25

What are the products of a neutralization reaction?

Answer 25

Water and Salt

Question 26

Complete: NaOH + HCl -->

Answer 26

H2O + NaCl

Question 27

If it takes 10mL of 1.0M NaOH to neutralize 20mL of HCl, what is the concentration of HCl?

Answer 27

0.5

Question 28

How much 2M NaOH is needed to completely neutralize 100mL of a 0.5M H2SO4?

Answer 28

50mL

Question 29

222 Rn --> 218 Po + _____ 86 84 What kind of particle is it?

Answer 29

4 He 2 Alpha particle

Question 30

Write the nuclear equation for "Copper-66 undergoes beta decay"

Answer 30

66 Cu --> 66 Zn + 0 e - | 29 30 -1

Question 31

How much of a 100g sample of Au is left after 8.10 days if it's half-life is 2.70 days?

Answer 31

12.5g Au

Question 32

Lewis Dot Structure for Carbon

Answer 32

• • C • •

Question 33

What is a polymer?

Answer 33

A chain of monomers

Question 34

Is the following equation endothermic or exothermic? NH4Cl + Heat <==> NH3 + HCl

Answer 34

Endothermic

Question 35

What are 3 ways you can INCREASE the following reaction? 2CO + O2 --> 2CO2

Answer 35

1. Add heat 2. Break into smaller pieces 3. Add more CO or O2

Question 36

What is the molar mass of ZnCl2?

Answer 36

136.29g ZnCl2

Question 37

If 65g of HCl is reacted with excess Zn, how much ZnCl2 will you produce?

Answer 37

121.5g ZnCl2