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27 Cards in this Set

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  • Back
To a Scientist,_______ is the ability to do work or change matter
Energy
A Scientist measures energy by measuring the amount of ____ done
Work
The ____ is the unit of measurement for energy and work
Joule
The ____ is the unit of measurement for power.
Watt
What do scientists call stored energy?
Potential
What do sceintists call energy of motion?
Kinetic
What kind of energy does a roller coaster car have when it sits motionless on the top of a hill?
Potential
What kind of energy does a roller coaster car have when it is pushed down?
Kinetic
What kind of energy does a spring have when it is pushed down?
Potenial
What happens to energy when the spring is released from bieing pushed down?
Kinetic energy is realeased
A _____ ______ is a strong attraction that holds two atoms together in a subtance
Chemical Bond
A ___ is the smallest bit of water that has all the properties of water.
Molecule
Energy stored in a chemical bond is call ___ energy
Chemical
Is the energy stored in chemical bonds potential or kinetic?
Potential
What do many chemical reactions give off that can be harnessed to do useful work.
Energy
Burning occurs when a subtance reacts with ___.
Oxegon
What does the equation Carbon+Oxegon=Carbon Dixode mean in words.
Carbon racts with oxegon to make carbon gas
What happens to mass and energy during a chemical reaction?
They change Form
What happens to electrical energy when you turn on a lamp?
It Turns Light Energy and then to Thermal Energy
What happens to electrical energy when you turn on a cieling fan?
It Turns to mechanical energy.
During a chemical reaction ,_____changes form
Energy
What is stored energy?
Potential
What is kinectic energy?
Energy of Motion
The rate at which work is done is ____
Power
_____ holds energy that origanilly came from sunlight
Petroleum
2 or more atoms that still has properties of a subatnce are ___
molecules
When carbon burns ___ is given off.
Carbon dioxide