The image you've uploaded is a worksheet titled
"States of Matter" with a key provided. The task asks students to identify whether each listed object is a
solid,
liquid, or
gas, and then fill in the blank accordingly.
Let’s go through the list and explain the reasoning behind each answer:
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1. milk – liquid
Explanation: Milk flows and takes the shape of its container, but it has a definite volume. This is characteristic of a
liquid.
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2. an ice cube – solid
Explanation: An ice cube has a fixed shape and volume. It maintains its form unless melted. That makes it a
solid.
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3. water vapor – gas
Explanation: Water vapor is the gaseous form of water. It's invisible and expands to fill its container. So it's a
gas.
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4. a basketball – solid
Explanation: A basketball is made of rubber or synthetic material and has a fixed shape and volume (even though it can be compressed slightly). It's considered a
solid.
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5. oil – liquid
Explanation: Oil flows and takes the shape of its container, but doesn't expand like a gas. It has a definite volume — this is a
liquid.
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6. a marshmallow – solid
Explanation: A marshmallow has a definite shape and volume. Even though it's soft and squishy, it's still a
solid.
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7. water – liquid
Explanation: Water flows and takes the shape of its container but keeps a constant volume — classic definition of a
liquid.
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8. juice – liquid
Explanation: Like milk and water, juice flows and fills the bottom of a container. It’s a
liquid.
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9. a piece of notebook paper – solid
Explanation: Paper has a fixed shape and volume. It doesn’t flow or expand — so it's a
solid.
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10. a piece of wood – solid
Explanation: Wood maintains its shape and volume. It's rigid and doesn't flow — definitely a
solid.
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11. tomato soup – liquid
Explanation: Soup flows and takes the shape of its container, even if it has some solids in it. Overall, it behaves as a
liquid.
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12. oxygen (what humans breathe out) – gas
Explanation: Oxygen is a gas at room temperature. When we breathe, we release gases into the air. So,
oxygen is a gas.
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13. helium in a balloon – gas
Explanation: Helium is a gas that fills the balloon and takes its shape. It expands to fill the space — a
gas.
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14. a cotton ball – solid
Explanation: Although fluffy and light, a cotton ball has a definite shape and volume. It's made of solid fibers. So, it's a
solid.
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15. carbon dioxide (what humans breathe out) – gas
Explanation: Carbon dioxide is released during respiration as a gas. It’s invisible and spreads in the air — a
gas.
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✔ Summary:
This worksheet helps students understand the three main states of matter by identifying everyday objects. The key shows correct answers, and the explanations above clarify why each item belongs to its respective state.
If you're using this for teaching or learning, emphasize:
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Solids have definite shape and volume.
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Liquids have definite volume but take the shape of their container.
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Gases have no definite shape or volume; they expand to fill their container.
Let me know if you'd like a printable version or a classroom activity based on this!
Parent Tip: Review the logic above to help your child master the concept of 3 states of water worksheet.
