WorksheetsSemester 2 Final Exam R
Total questions: 66
Worksheet time: 2hrs 55mins
Sort each description
Absorbs heat
Enthalpy (H) is (+) positive
Boiling
Releases heat
Enthalpy (H) is (-) negative
Freezing
Photosynthesis
Sublimation
Heating of water
Combustion
Cooling water
What happens to the equilibrium if we remove heat?
It shifts left, towards the reactants
It shifts right, towards the products
It does not shift
N2 (g) + 3H2 (g) <--> 2NH3 (g) + heat
If the temperature rises, the reaction will shift...
left
right
no change
In an ENDOthermic reaction, ΔH is (a) and goes on the (b) side of a chemical equation because energy is (c)
In an ENDOthermic reaction, ΔH is (a) and goes on the (b) side of a chemical equation because energy is (c)
In an (a) thermic reaction, energy is released, and ΔH is (b) and would go on the (c) side of a chemical equation
Match the following scenarios with the correct method of heat transfer.
Convection
Warm air rising from a heater and circulating in a room
Conduction
Heat traveling through a metal rod when one end is heated
Radiation
Heat from the sun warming your face
Match the following gas changes with their corresponding processes.
Solid turning into a gas
Sublimation
Gas turning into a liquid
Condensation
Liquid turning into a gas
Vaporization (or boiling)
Solid turning into a liquid
Melting
Liquid turning into a solid
Freezing (or fusion)
Match the letter in the picture with the word
A
all solid
B
melting/
freezing
C
all liquid
D
vaporizing/
condensing
E
all gas
Gas
E
Liquid
C
Freezing or Melting
B
Solid
A
Condensing or Boiling
D
Unit for heat
calorie (cal)
Unit for mass
grams (g)
Unit for temperature
°C
Unit for length
meter (m)
Unit for specific heat
cal/g °C
Heat
calculated based on mass and change in temperature
Temperature
measured with a thermometer
Specific Heat
Specific to each substance - tells how hard it is to heat something up
Change
Δ
Mass
Measured with a scale or balance
Match the types of energy.
Match the following types of energy
Mechanical
Motion
Electrical
Flow of electric charge
Thermal
Heat
Chemical
Potential energy in food or fuel
Electromagnetic
Energy in waves
Categorize each energy resource
Wind
Solar
Categorize each energy resource
Wind
Solar
Match the following units with what they measure
cm3
volume of solid
mL
volume of liquid
g
mass
g/mL
density
length
cm
Place the variables into the correct location in the formula to solve for density
inertia
density
mass
volume
matter
A 65.0g sample of metal is dropped into 32.0 mL of water. The water level rises to 46.4 mL. Using the chart, what is the identity of the metal?
(a)
A 130.0g sample of metal is dropped into 15.0 mL of water. The water level rises to 43.9 mL. Using the chart, what is the identity of the metal?
(a)
A 78.0g sample of metal is dropped into 12.2 mL of water. The water level rises to 41.1 mL. Using the chart, what is the identity of the metal?
(a)
A 130.0g sample of metal is dropped into 17.5 mL of water. The water level rises to 46.4 mL. Using the chart, what is the identity of the metal?
(a)
Use the density chart to identify the substance. If the substance has a volume of 5 cm3 and a mass of 52.5.
lead
aluminum
silver
water
A piece of copper has a mass of 89g and a volume of 10.0 cm3. What would be the density of the copper?
(a)
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
(a)
4
3
2
1
How many O's are in Al₂(SO₄)₃
(a)
How many Nitrogen atoms are in (NH₄)₂CrO₄?
(a)
How many Hydrogen atoms in 3(NH₄)₂CrO₄?
(a)
Balance this equation:
(a) P4+ (b) O2 --> (c) P2O3
Balance this equation
(a) Zn+ (b) HCl--> (c) ZnCl2 + (d) H2
Balance the equation
(a) Ca + (b) Al2(SO4)3 --> (c) CaSO4 + (d) Al
Match the following reactions to the correct description
single replacement
combustion
double displacement
synthesis
decomposition
Match the following reactions to the particle level models
single replacement
combustion
synthesis
double displacement
decomposition
According to the Law of Conservation of Mass, what happens to the wood and oxygen when it is burned?
The wood disappears.
It stays the same chemically.
The atoms in the wood and oxygen rearrange and form smoke and ash.
Nothing.
Physical change
(Shape)
Cutting paper
Physical change
(solubility)
Dissolving
Kool-Aid
Chemical Change
(Flammability)
Lighting a match
Chemical Change
Creating a new substance
Both a Physical & Chemical change
Bubbles
A student measures that water absorbs 68J of energy when a piece of hot metal is added.
If 2.7g of the unknown metal was at 100°C and the final temperature of the water was 34°C, what is the identity of the metal?
Aluminum
Looking at the data from this calorimetry lab, calculate q, or heat energy for the potato chip
354 °C
354 cal
33.1 °C
33.1 cal
Looking at the data from this calorimetry lab, calculate q, or heat energy for the water
354 °C
354 cal
33.1 cal
33.1 °C
Looking at the data from this calorimetry lab, what is the change in temperature of the water?
25.1 °C
69.7 °C
22.3 °C
47.4 °C
Looking at the data from this calorimetry lab, what is the mass of the water?
14.1g
44.3g
15.1g
29.2g
Heat
calculated based on mass and change in temperature
Temperature
measured with a thermometer
Specific Heat
Specific to each substance - tells how hard it is to heat something up
Change
Δ
Mass
Measured with a scale or balance
Unit for heat
calorie (cal)
Unit for mass
grams (g)
Unit for temperature
°C
Unit for length
meter (m)
Unit for specific heat
cal/g °C
Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. Will it sink or float?
Sink because it is more dense than water
Sink because it is less dense than water
Float because it is more dense than water
Float because it is less dense than water
Match the following units with what they measure
cm3
volume of solid
mL
volume of liquid
g
mass
g/mL
density
length
cm
Co(H2O)6+2 + 4 Cl-1 ↔ CoCl4-2 + 6 H2O
Pink ↔ Blue
When heat is added to the reaction, a color change of pink to blue occurs as seen in the image provided. This indicates that the reaction is...
Endothermic
Exothermic
Not enough information given
Heat + 1 N2O4 → 2 NO2
What will happen when the temperature is increased?
Position of equilibrium will shift to left and become lighter in color
Position of equilibrium will shift to right and become more brown
No change in position of equilibrium
Position of equilibrium will shift to right and become lighter in color
N2 (g) + 3H2 (g) <--> 2NH3 (g) + heat
If the temperature rises, the reaction will shift...
left
right
no change
HEAT + H2CO3 --> CO2 + H2O
If the temperature is decreased, this reaction will shift...
right
left
no change
What is the formula for calcium carbonate?
(a)
Match the following
10
base
5
acid
salt
neutral
Match the following
Acid
HCl
Base
NaOH
Neutral
NaCl
Reorder the following from lowest to highest pH
Strong Acid
Weak Acid
Neutral
Weak Base
Strong Base
Match the following
higher than 7
base
lower than 7
acid
7
neutral
Match
H+
Acid
OH-
Base
NaCl
Salt
Aluminum forms a compound with a halogen (X). What will the formula of this ionic compound be?
(a)
Calcium forms a compound with a halogen (X). What will the formula of this ionic compound be?
(a)
A metal (M) with a +1 charge forms a compound with oxygen. What will the formula of the compound be?
(a)
A metal (M) with a +2 charge forms a compound with oxygen. What will the formula of the compound be?
(a)
A metal (M) with a +2 charge forms a compound with nitrogen. What will the formula of the compound be?
(a)
Calcium forms a compound with a nonmetal (X) with a -3 charge.
What will the formula of the compound be?
(a)
