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13 Cards in this Set

  • Front
  • Back
What is energy?
The ability to do work or cause change.
Every chemical or physical change in matter includes a change in energy.
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
Name four typess of energy related ot changes in matter
Thermal Energy
Chemical Energy
Electromagnetic energy
Electrical energy
What is thermal energy?
The total energy (potential and kinetic)of all the particles in an object
True or false?

Thermal energy always flows from warmer matter to cooler matter.
True
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
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
What is chemical energy?
The energy store in the chemical bonds between anatom
True or false?
Chemical energy is store in the foods yu eat, in gaslone and even in the cells of your body
True
What is electromagnetic energy?
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
What is electric energy?
The energy of electrically charged particles moving from one place ot another.

Examples is electrolysis
Transforming energy
True or false
Energy can be transformed from one type of energyinto another type of energy
True
What type of energy transformation occurs during photosynthesis?
Plants transform electromagnetic energy(rays from the sun) into chemical energy as they make molecules of sugar