States of Matter — Answer Key
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
A liquid has a definite shape and a definite volume.
Corrected: A solid has a definite shape and a definite volume.
The corrected sentence is: "A solid has a definite shape and a definite volume.". The original sentence "A liquid has a definite shape and a definite volume." contained an error that needed to be fixed.
2. Fix the sentence:
A gas has a definite volume but no definite shape.
Corrected: A liquid has a definite volume but no definite shape.
The corrected sentence is: "A liquid has a definite volume but no definite shape.". The original sentence "A gas has a definite volume but no definite shape." contained an error that needed to be fixed.
3. Fix the sentence:
Ice is an example of a liquid.
Corrected: Ice is an example of a solid.
The corrected sentence is: "Ice is an example of a solid.". The original sentence "Ice is an example of a liquid." contained an error that needed to be fixed.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. The three states of matter are solid, liquid, and gas.
Air and steam are both gases — they have no definite shape or volume and spread out to fill their container.
2. A solid keeps its shape even when you move it to a new container.
Solids have a definite shape because their particles are tightly packed and hold their positions.
3. Water vapor in the air is an example of a gas.
When water is heated enough, it evaporates and turns into water vapor, which is a gas.
4. All matter takes up space and has mass.
All matter has mass and takes up space, whether it is a solid, liquid, or gas.
Part C: True or False?
Read each statement. Circle True or False.
1. A solid has a definite shape and a definite volume.
True False
The statement is true based on states of matter concepts.
2. A gas fills the entire container it is placed in.
True False
The statement is true based on states of matter concepts.
3. A liquid has a definite shape like a solid.
True False
The statement is false; review how states of matter behave.