They are kind of close together. (Not as close as a solid!)
100
Describe the atoms in a gas.
They are very spread apart.
100
What must be added or removed to make a physical change?
HEAT!
100
What is matter?
Anything that takes up space and has mass.
200
Name three examples of a solid.
Book, table, pen, marker, ice, salt, etc.
200
Name three examples of a liquid.
Water, juice, milk, blood, syrup, etc.
200
Name three examples of gases.
Water vapor, exhaust, smoke, carbon dioxide, oxygen, etc.
200
What is it called when a solid turns into a liquid? Give an example.
Melting. Ice melting on a hot day. A candle melting into a wax puddle.
200
What is an atom?
A tiny particle.
300
Does a solid have a shape of its own? YES or NO.
Yes!
300
Does a liquid have a shape of its own? YES or NO.
No. It takes the shape of its container.
300
Does a gas have a shape of its own? YES or NO.
No.
300
What is it called when a liquid turns into a solid? Give an example.
Freezing. Turning juice into a popsicle by placing it in the freezer.
300
What do you call two or more atoms that are joined together?
Molecules
400
Describe the forces holding together a solid.
Very strong!
400
Describe the forces holding together a liquid.
Kind of strong but weaker than a solid.
400
Describe the forces holding together the atoms in a gas.
The forces holding them together are weak. They bounce around like crazy!
400
What is it called when liquid turns into a gas? Give an example.
Evaporation. Water boils and turns into water vapor on the stove.
400
What is mass?
The amount of space an object takes up.
500
Name three properties of solids.
Hard, soft, rough, flexible, rigid, colored, transparent, etc.
500
Name three properties of liquids.
Colored, transparent, sticky, thick, runny, etc.
500
Gasoline is a gas. True or false.
FALSE. It is a liquid.
500
What is it called when gas turns into a liquid? Give an example.
Condensation. A cold cup "sweats" on a hot day because water vapor in the air is cooled and turns into a liquid.
500
What is a chemical change? Give an example.
A chemical change is when an item becomes something new. The atoms that make it up are rearranged to make a new molecule. Heat can be used but does not HAVE to be added or removed to make a chemical change. Roasted marshmallows, pancakes/batter, rust on a car, a cooked egg, etc.