States of Matter
What are the three main states of matter?
Solid, Liquid, Gas
How does the shape of a solid compare to that of a liquid?
A solid has a definite shape; a liquid takes the shape of its containers.
In which state of matter do molecules move the fastest?
Gas
What is an example of a solid?
Example: Ice ( teacher can determine if the answer is correct.)
What is the process called when a gas turns into a liquid?
Condensation
In which state of matter do atoms vibrate but stay in fixed positions?
Solid
Which state of matter has a definite shape and volume?
Solid
Describe the motion of molecules in a solid.
Molecules vibrate in place but do not move freely.
Name a liquid that we commonly use every day.
Water
What is the term for the change from liquid to solid?
Freezing
Which state of matter has a definite volume but no definite shape?
Liquid
What happens to the volume of a gas when it is compressed?
The volume decreases.
What happens to molecules in a liquid when heated?
They move faster and may eventually change to a gas.
Provide and example of a gas found in the air
Oxygen or Carbon Dioxide
When ice absorbs heat, what transition occurs?
Melting
What is the state of matter that fills the shape and volume of its container?
Can a liquid be poured into a container of any shape? Why or Why Not?
Yes, because liquids take the shape of their containers.
How do the kinetic energy levels compare between solids, liquids, and gases?
Gases have the highest kinetic energy, followed by liquids, then solids.
What happens to water when it boils?
It changes form a liquid to a gas.
What is the process called when a liquid changes into a gas?
Evaporation
What term describes the change of state from a solid to a liquid?
Melting
How does the shape of a gas differ from that of a solid?
A gas has no definite shape and expands to fill its container.
Why do gases expand to fill the space of their container?
Because the molecules move freely and quickly.
Give a real-world example of a substance transitioning from a solid to liquid
Example: Ice melting into water (teacher may accept other answers)
A solid changes directly into a gas without becoming a liquid (example: dry ice)