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13 Cards in this Set
- Front
- Back
What is energy?
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The ability to do work or cause change.
Every chemical or physical change in matter includes a change in energy. |
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True or false?
Like matter, energy is never created or destroyed in chemical reactions |
True
Energy can only be transformed- that is changed from one form to another |
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Name four typess of energy related ot changes in matter
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Thermal Energy
Chemical Energy Electromagnetic energy Electrical energy |
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What is thermal energy?
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The total energy (potential and kinetic)of all the particles in an object
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True or false?
Thermal energy always flows from warmer matter to cooler matter. |
True
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What is an endothermic change?
Name an example |
A change in which energy is taken in.
An iceberg melting is taking in thermal energy from the surrounding water |
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Whatis an exothermic change?
Name an example |
A change in which energy is released.
combustion is a chemical change that releases energy in the form of heat and light |
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What is chemical energy?
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The energy store in the chemical bonds between anatom
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True or false?
Chemical energy is store in the foods yu eat, in gaslone and even in the cells of your body |
True
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What is electromagnetic energy?
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A form of energy that travesl through space as waves
examples - radio waves, heat waves from heat lamps, microwave waves that heat your food, UV rays from the sun |
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What is electric energy?
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The energy of electrically charged particles moving from one place ot another.
Examples is electrolysis |
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Transforming energy
True or false Energy can be transformed from one type of energyinto another type of energy |
True
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What type of energy transformation occurs during photosynthesis?
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Plants transform electromagnetic energy(rays from the sun) into chemical energy as they make molecules of sugar
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