Back to Student Worksheet
Science
Grade 2-3
Answer Key
States of Matter
Compare solids, liquids, and gases and describe what happens when matter changes state.
Answer Key
Name:
Date:
Score: / 8
States of Matter
Compare solids, liquids, and gases and describe what happens when matter changes state.
Science - Grade 2-3
Instructions: Answer each question in a complete sentence. Use vocabulary words: solid, liquid, gas, melt, freeze, evaporate, condense.
- 1
Name the three states of matter.
Solid, liquid, and gas - 2
Which state of matter keeps its own shape?
A solid - 3
What happens to liquid water when it is heated to 100 degrees Celsius?
It evaporates and turns into water vapor (a gas). - 4
Give one example of a solid, one liquid, and one gas.
Solid: ice; Liquid: juice; Gas: air (accept reasonable alternatives) - 5
What is the process called when a liquid turns into a solid?
Freezing - 6
What is condensation?
Condensation is when water vapor cools and turns into liquid droplets. - 7
How are liquids and gases alike, and how are they different?
Both take the shape of their container; gases expand to fill all available space while liquids have a fixed volume. - 8
You leave a puddle outside on a sunny day and it disappears. What happened to the water?
The water evaporated: it turned into water vapor and went into the air.
LivePhysics.com Science - Grade 2-3 - Answer Key