Mixing Substances | Chemical Changes | Inertia | Pressure | Electricity |
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Chemistry
A kind of science that studies what things are made of.
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Physical change
This type of change is when an object's shape is changed by bending, folding, tearing, or breaking.
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by itself
An object at rest will not start moving ___________.
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weight
On the earth, matter has _________
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energy
Electricity is a kind of ___________.
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substance
A single kind of matter is called a __________.
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Chemical change
This type of change is when an object changes into a new type of matter.
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Contact forces
This type of force occurs when two objects touch.
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pressure
The forces pushing in on an object is called __________.
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power plant
A factory that makes electricity is called a ____________.
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faster
Things dissolve _________ in hot water than in cold water.
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burning
An example of a fast chemical change is __________.
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same speed
An object in motion wants to stay moving at the _____________.
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particles
Gravity pulls down on all the _____________ in an object.
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Closed Circuit
This type of circuit is when electricity flows from its source around in a circle, and back to its source.
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A solution
What do you make when you dissolve one substance into another?
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rusting
this chemical change happens when iron, water, and oxygen mix together.
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harder
It is ________ to stop a heavy moving object.
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no pressure
There is no air in outer space so there is __________.
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An electrical device
This object changes electricity into another form of energy.
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An egg
What can make oil and water mix?
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carbon dioxide
Fire uses oxygen and makes __________________.
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outer space
Where can objects move in a straight line forever?
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They live under 8 km of water.
How deep in the ocean do snailfish live?
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plastic
Which insulator are wires usually covered in?
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