WorksheetsStudy for 10.1 Check
Total questions: 40
Worksheet time: 37mins
The amount of energy required to raise the temperature 1ºC for every gram is called____?
Thermal Energy
Specific Heat
Temperature
Kinetic Energy
What unit do you use to measure Thermal Energy?
J/g ºC
g
ºC
J
If the specific heat of water is 4,184 J/g∙°C, how much heat is required to increase the temperature of 1200 g of water from 23 °C to 39 °C?
-80,371.2 J
44,938.6 J
80,371.2 J
112,575.9 K
In an endothermic reaction, heat is ...
taken in
given out
6. Which of these processes is always exothermic?
A. evaporation
B. burning
C. insulation
D. melting
O2(g) + 2 H2 (g) → 2 H2O (g) + Energy
endothermic
exothermic
The graph above is from which type of reaction?
Endothermic reaction
Exothermic Reaction
The graph above is from which type of reaction?
Endothermic reaction
Exothermic reaction
Enthalpy change (∆H) of reaction is positive
Exothermic
Endothermic
The products are at a higher energy than the reactants
Exothermic
Endothermic
Look at the picture, is this an exothermic or endothermic reaction?
Endothermic
Exothermic
Which best describes this graph?
Endothermic because energy is absorbed
Endothermic because energy is released
Exothermic because energy is released
Exothermic because energy is absorbed
Look at the picture, how much energy is in the reactants?
(a)
Look at the picture, how much energy is the 'activation energy'?
(a)
When a substance changes from a Liquid to a Gas, it is an
Exothermic Change
Endothermic Change
When a substance changes from a Gas to a Liquid, it is an
Exothermic Change
Endothermic Change
Boiling is an example of
Particles moving faster/endothermic change
particles moving slower/endothermic change
particles moving faster/exothermic change
particles moving slower/exothermic change
Solid to liquid is an example of
Particles moving faster/endothermic change
particles moving slower/endothermic change
particles moving faster/exothermic change
particles moving slower/exothermic change
A gas absorbs heat, this is an example of a
exothermic change
endothermic change
Releasing heat into the surroundings occurs during an ___________________ reaction.
Exothermic
Endothermic
Kinetic Energy
Thermal Energy
What is sublimation?
phase change between solid and liquid
phase change from gas to solid
phase change from solid to gas
phase change from solid to solid
What term is used to describe the process of a substance changing from a solid to a liquid?
Melting
Evaporation
Freezing
Boiling
What term goes on the y-axis? (A)
Heat(Energy)
Temperature
Phase
Type of Matter
What phase of matter exists in part D of the graph?
Gas
Liquid
Solid
Plasma
What phase change occurs when you start at D and end at E?
Freezing
Melting
Condensing
Vaporization
On which parts of the graph does the temperature remain the same?
Between C and D
Between D and E
At C, D, or E
On both flat sections
Bonds that are formed ____ energy, and bonds that are broken _____ energy.
Absorb, absorb
Absorb, release
release, release
release, absorb
"Speeds up a reaction by lowering activation energy."
Entropy
Catalyst
Enthalpy
Temperature
Which best represents the activation energy of this exothermic energy curve?
A
B
C
D
Which number best represents the impact of a catalyst on the energy curve of an exothermic reaction?
1
2
3
4
Which segment best represents warming of a liquid?
1 to 2
2 to 3
3 to 4
4 to 5
5 to 6
Which segment best represents boiling?
1 to 2
2 to 3
3 to 4
4 to 5
5 to 6
Which segment best represents the warming of a solid?
1 to 2
2 to 3
3 to 4
4 to 5
5 to 6
Analyze the diagram.
Using ΔH = ΔHproducts - ΔHreactants, calculate the Heat of Reaction (ΔH).
+ 50 kJ
+ 150 kJ
- 50 kJ
- 150 kJ
