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20
×
When calcium reacts with water, the temperature changes from 18°C to 39°C. Which statement is correct?
The solution at the end is acidic
The reaction is reversible
The reaction is endothermic
The reaction is exothermic
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15
×
Which is energy in motion?
Potential energy
Kinetic energy
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20
×
What is the variable for change in Temperature in the Heat Equation?
Cp
T
J
Q
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15
×
Warm air is __________ dense than cold air and rises creating convection currents.
more
less
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lifesaver
Give 25 points!
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gold
Win 50 points!
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fairy
Take points!
5
10
15
20
25
×
thief
Give points!
5
10
15
20
25
15
×
Which describes what can happen as a result of radiation?
A carâs inside temperature rises to over 100 degrees.
A shirt is hot after having been ironed.
A piece of wood burns in a fire.
A can of soup is heated in a pot on a stove.
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15
×
A high specific heat means...
It requires more energy to change temperature
It heats up quickly with energy added
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15
×
What would be the effect on the particles if more heat is supplied to the system?
They would slow down
There would be no effect
They would stop moving
They would speed up
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20
×
When barium hydroxide and ammonium chloride react, the temperature of the mixture decreases. What kind of reaction is this?
Decomposition
Exothermic
Endothermic
Indothermic
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20
×
What is the variable for energy in the Heat Equation?
T
J
Cp
Q
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15
×
Another word for "thermal energy" is ________________
Solar energy
Light energy
Heat energy
Electrical energy
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15
×
_________ is the ability to do work
Energy
Force
Power
Strength
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boom
Lose 50 points!
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rocket
Go to first place!
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fairy
Take points!
5
10
15
20
25
×
thief
Give points!
5
10
15
20
25
×
thief
Give points!
5
10
15
20
25
×
gold
Win 50 points!
Okay!
×
rocket
Go to first place!
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baam
Lose 5 points!
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banana
Go to last place!
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gift
Win 20 points!
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fairy
Take points!
5
10
15
20
25
×
banana
Go to last place!
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15
×
What term is given to a reaction which transfers heat energy to the surroundings?
Reversible
Reversible
Endothermic
Exothermic
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