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Science Grade K-1 Answer Key

Science: Solids, Liquids, and Gases

Identifying the three states of matter

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Science: Solids, Liquids, and Gases

Identifying the three states of matter

Science - Grade K-1

Instructions: Read each problem carefully. Draw or write your answer in the space provided.
  1. 1

    Circle the object that is a solid: a rock, juice, or air.

    A solid does not pour or float away.

    The rock is a solid because it keeps its shape.
  2. 2

    A cup has milk inside it. Is the milk a solid, liquid, or gas?

    The milk is a liquid because it can pour and takes the shape of the cup.
  3. 3

    Steam rises from hot soup. Is steam a solid, liquid, or gas?

    Gases can move all around us.

    Steam is a gas because it spreads out in the air.
  4. 4

    Draw one solid you can find in your classroom.

    A correct answer could be a desk, chair, pencil, book, or any classroom object that keeps its shape.
  5. 5

    Which state of matter takes the shape of its container: solid, liquid, or gas?

    Think about water in a cup or bowl.

    A liquid takes the shape of its container because it can flow.
  6. 6

    Look at an ice cube. Is it a solid, liquid, or gas? Explain.

    An ice cube is a solid because it has its own shape and does not pour.
  7. 7

    Fill in the blank: A liquid can ______ from one place to another.

    Water moves this way when you tip a cup.

    A liquid can flow from one place to another.
  8. 8

    A balloon is filled with air. What state of matter is the air inside the balloon?

    The air inside the balloon is a gas because it fills the space inside the balloon.
  9. 9

    Name one liquid you drink.

    A correct answer could be water, milk, juice, or another safe drink that is a liquid.
  10. 10

    Sort these into solid or liquid: apple, water, crayon, soup.

    Solids keep their shape. Liquids can pour.

    The apple and crayon are solids. The water and soup are liquids.
  11. 11

    Which one can you hold in your hand without it pouring away: a block or water?

    The block can be held in your hand without pouring away because it is a solid.
  12. 12

    Fill in the blank: A gas can spread out and fill ______.

    Air fills a room even though you cannot see it.

    A gas can spread out and fill space.
  13. 13

    Circle all the liquids: honey, pencil, rain, toy car.

    Honey and rain are liquids because they can flow and take the shape of a container.
  14. 14

    A snowman melts in the sun. What liquid does it become?

    Snow and ice are frozen water.

    A snowman becomes water when it melts.
  15. 15

    Tell one way solids and liquids are different.

    One difference is that solids keep their shape, but liquids take the shape of their container.
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