States of Matter — Answer Key
Part A: Sort the Words
Sort each word or number into the correct category box.
1. Sort each material as SOLID or LIQUID. Solids hold their shape. Liquids take the shape of their container.
Solid
rockbooktable Liquid
milkjuicewater Solids like rocks and books keep their own shape. Liquids like milk, juice, and water flow and take the shape of any cup or bowl they are in.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. A rock is a solid because it keeps its own shape.
A solid holds its shape and does not change when you move it around.
2. Water is a liquid because it flows and takes the shape of the cup.
Liquids flow and match the shape of whatever container holds them.
3. A wooden chair is a solid that you can sit on.
Wood is a hard solid, so the chair keeps its shape when you sit.
4. Milk in a glass is a liquid.
Milk flows and shapes itself to the inside of the glass.
5. Matter is anything that takes up space.
All matter, in any state, takes up space in our world.
Part C: True or False?
Read each statement. Circle True or False.
1. A rock keeps its shape even when you pick it up.
True False
True — a rock is a solid, so it holds its shape no matter where you move it.
2. Water keeps its shape when you pour it into a bowl.
True False
False — water is a liquid, so it takes the shape of the bowl it is poured into.
3. A book is a solid.
True False
True — a book holds its shape, so it is a solid.
4. Juice is a solid because it is in a box.
True False
False — the box is solid, but the juice inside flows and is a liquid.