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THE "HEATED" GAME
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Potential energy diagrams show:
 
Energy changes during reactions
 
Mass changes during reactions
 
Temperature of atoms
 
Reaction color
The activation energy is:
 
Energy required to start a reaction
 
Total energy in products
 
Energy released by bonds
 
Energy lost as heat
An exothermic reaction:
 
Releases heat
 
Absorbs heat
 
Stops energy transfer
 
Requires no energy
An endothermic reaction:
 
Absorbs heat
 
Releases heat
 
Destroys energy
 
Produces light only
A calorimeter is designed to:
 
Measure heat exchange
 
Speed reactions
 
Stop chemical reactions
 
Increase entropy
Which state of matter typically has highest entropy?
 
Gas
 
Solid
 
Liquid
 
Plasma
Entropy is best described as:
 
Disorder or randomness
 
Energy storage
 
Particle mass
 
Reaction speed
Heat transfer continues until:
 
Objects reach the same temperature
 
Objects melt
 
Energy disappears
 
Pressure increases
Heat flows from:
 
Hot objects to cold objects
 
Cold objects to hot objects
 
Objects with more mass
 
Objects with more pressure
According to conservation of energy, energy can only:
 
Be transferred or converted
 
Be created
 
Disappear
 
Be destroyed
The First Law of Thermodynamics states:
 
Energy cannot be created or destroyed
 
Energy disappears over time
 
Energy only becomes heat
 
Energy can only be chemical
Energy that exists because of position or condition is called:
 
Potential energy
 
Thermal energy
 
Chemical energy
 
Nuclear energy
Which type of energy involves motion?
 
Kinetic energy
 
Potential energy
 
Stored energy
 
Chemical energy
Which type of energy is stored energy?
 
Potential energy
 
Thermal energy
 
Kinetic energy
 
Mechanical energy
A campfire producing heat and light shows that:
 
Energy can change forms
 
Energy disappears
 
Matter becomes energy only
 
Heat cannot be produced naturally
Which situation demonstrates energy conversion?
 
A lamp turning electricity into light
 
Water boiling
 
A rock sitting on the ground
 
A frozen lake
Energy can be defined as:
 
The ability to supply heat or do work
 
The ability to increase mass
 
The ability to create matter
 
The ability to stop reactions
Heat is best defined as:
 
Energy transferred because of temperature differences
 
Stored energy inside atoms
 
Motion of electrons
 
Energy stored in bonds
When a chemical bond breaks, energy is:
 
Absorbed
 
Released
 
Destroyed
 
Converted to mass
When new chemical bonds form, energy is typically:
 
Released
 
Absorbed
 
Lost permanently
 
Destroyed
What is thermochemistry the study of?
 
Energy changes during chemical reactions
 
Electron orbitals
 
Motion of objects
 
Atomic size trends
The amount of energy required to raise the temperature 1ÂşC is called____?
 
Heat Capacity
 
Temperature
 
Specific Heat
 
Thermal Energy
The amount of energy required to raise the temperature 1ÂşC for every gram is called____?
 
Specific Heat
 
Thermal Energy
 
Temperature
 
Kinetic Energy
How does heat flow?
 
Always from warm to cold
 
Both warm to cold & cold to warm
 
It depends on the temperature
 
Always from cold to warm
What would be the effect on the particles if more heat is supplied to the system?
 
They would speed up
 
They would slow down
 
They would stop moving
 
There would be no effect
What term is given to a reaction which transfers heat energy to the surroundings?
 
Exothermic
 
Endothermic
 
Reversible
 
Reversible
Warm air is __________ dense than cold air and rises creating convection currents.
 
less
 
more
How is heat transferred when boiling a pot of water on the stove?
 
convection
 
conduction
 
combustion
 
radiation
Which describes what can happen as a result of radiation?
 
A car’s inside temperature rises to over 100 degrees.
 
A piece of wood burns in a fire.
 
A can of soup is heated in a pot on a stove.
 
A shirt is hot after having been ironed.
Which will most likely occur when raw egg is placed on black pavement on a hot, summer day?
 
The pavement will conduct the heat and cook the egg.
 
The egg will absorb the heat and leave the pavement hotter
 
The egg will reflect the heat and make the pavement hotter.
 
The pavement will absorb the heat from the egg.
The heat from a lamp allows a lizard to remain warm. This is an example of which type of heat transfer?
 
radiation
 
convection
 
conduction
 
insulation
Another word for "thermal energy" is ________________
 
Heat energy
 
Solar energy
 
Light energy
 
Electrical energy
Which is energy in motion?
 
Kinetic energy
 
Potential energy
_________ is the ability to do work
 
Energy
 
Power
 
Strength
 
Force
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