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List
of Questions:
Question: What
are the three states of matter?
Answer:
All matter on Earth exists in one
of three states - solid, liquid or gas.
List of Questions
Question: What
is a liquid?
Answer:
A liquid is any substance that has
a definite volume, but a shape that changes easily. A liquid fills
the shape of its container, but the liquid has a definite surface boundary.
List of Questions
Question: What
is a solid?
Answer:
A solid is a substance that has a
fixed volume and shape. A solid does not flow to assume the shape of
its container.
List of Questions
Question: What is
a gas?
Answer:
A gas is a substance that has no
fixed volume or shape. Gas expands to fill the shape and volume
of its container.
Why does
matter change state?
Answer:
The temperature
determines the state of a substance. When heated, a solid
changes to a liquid, and a liquid to a gas. These changes of state
take place because the molecules, or tiny bits of matter that make up
the substance, vibrate faster when the substance is heated. When the
molecules vibrate faster, the forces that hold the molecules together
get weaker. When cooled, a gas changes to a liquid, and a liquid
changes to a solid.
What
are the states of water?
Answer:
The three states
of water are: solid, liquid, and gas. When its temperature drops
below 0 C, water turns to ice. Between 0 C and 100 C, water
exists are a liquid. Above 100 C, water changes to a gas called steam.
What
is a solution?
Answer:
A solution is a
mixture of one substance dissolved in another Sugar dissolves
in water to make a sugar-water solution.
What
is a colloid?
Answer:
A colloid consists
of tiny particles of matter that are dispersed evenly throughout a
gas, liquid, or solid. If left to stand, the tiny particles of matter
will not settle out of the gas, liquid, or solid.
What
is an element?
Answer:
An element is a
substance made of just one type of atom. Gold is an element. A solid
piece of gold is made only of gold atoms.
List of Questions
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