Solid/ /Liquid/ Gas
This state of matter has a shape and volume that does not change.
What is a solid?
This state of matter flows and takes the shape of its container.
What is a liquid?
This state of matter spreads out and fills up all the space in a container.
What is a gas?
Ice melting into water is an example of this change.
What is melting?
This is the process when a liquid turns into a gas.
What is evaporation?
When gas turns into a liquid, it’s called this.
What is condensation?
Name one way to tell the difference between a solid and a liquid using your senses. (Hint: Think about shape and feel.)
What is a solid that keeps its shape and feels firm, but a liquid flows and feels wet?
Solid, liquid, and gas.
What are the three main states of matter?
Solid.
Which state of matter has a fixed shape and volume?
Liquid.
Which state of matter has no fixed shape or volume?
Gas.
Which state of matter has no fixed shape or volume?
Gas.
What state of matter is steam?
Solid.
What state of matter is ice?
It melts into a liquid
What happens when a solid is heated?
It freezes into a solid.
What happens when a liquid is cooled?
Evaporation or boiling
What process changes a liquid into a gas?
Condensation.
What process changes a gas into a liquid?
Sublimation.
What process changes a solid directly into a gas?
Deposition.
What is the process of a gas becoming a solid without turning into a liquid first?
Heat (higher temperature).
What causes water to evaporate faster?
They vibrate in place.
What do particles in a solid do?
They move around and slide past each other.
What do particles in a liquid do?
They move freely and quickly in all directions.
What do particles in a gas do?
100°C or 212°F.
What is the boiling point of water?
0°C or 32°F.
What is the freezing point of water?
Water droplets on a cold glass.
Name one example of condensation.
Because their particles are tightly packed and don’t move around.
Why do solids keep their shape while liquids do not?
Because the heat turns water into water vapor (a gas).
Why does steam rise from hot soup?
Because the water evaporates.
Why do puddles disappear on a hot day?
A new substance is formed (e.g., rust, burning wood).
How do we know a chemical change has happened, not just a change in state?
A thermometer.
What tool can help measure temperature during a change of state?
Ionized gas found in lightning or the sun.
What is plasma (a fourth state of matter)?
Yes (e.g., solid → liquid → gas → back to solid).
Can matter change states more than once?
They move faster.
What happens to the energy of particles as they heat up?
Because it absorbs heat from your hand
Why does ice feel cold to touch?