Across
- 3. The capacity for doing work; the universe is made of matter and energy. Some of the forms of energy are: motion, heat, light, electricity, sound.
- 4. The basic building blocks of normal matter.
- 9. A phase change involving the addition of energy to a liquid, changing the liquid into a gas. When this happens at a very fast rate it's called boiling.
- 10. A phase change involving the removal of energy (cooling) from a gas, changing the gas into a liquid. Example: water vapor is made visible in the air as a result of cooling warm, moist air.
- 13. A mixture of air and tiny invisible droplets of water suspended in it. Water vapor is present in warm air, such as the air you exhale. When the droplets are slightly larger, they appear opaque-white in the air; this is called steam (hot) or fog (cold).
- 15. A substance that flows, has no definite shape and takes on the shape of its container or makes puddles.
- 16. A substance that holds together to create its own definite shape.
- 18. A state of matter, a classification based on specific properties of substances.
- 19. A phase change involving the removal of energy from a liquid, changing the liquid into a solid.
Down
- 1. A phase change in which a substance changes directly from a solid to a gas due to addition of heat.
- 2. A phase change in which a substance changes directly from a gas to a solid, due to removal of heat.
- 5. A field of science that deals with the composition, properties and interactions of substances (matter.)
- 6. Intrinsic energy of a substance by virtue of the motion of its atoms/molecules.
- 7. Two or more atoms bound together as a unit. Examples are carbon dioxide(CO2),oxygen (O2), and water (H2O), table salt (NaCl).
- 8. A phase change involving the addition of energy (heating) to a solid, changing the solid into a liquid.
- 11. An invisible, odorless gas made of molecules with one atom of carbon and two atoms of oxygen. It becomes a solid (dry ice) at –109°F (–79°C).
- 12. A substance that does not hold together and can expand into the available space.
- 14. Nitrogen gas that has been cooled under pressure to a temperature of –321°F/– 196°C, at which point it turns to liquid.
- 17. Anything that has mass and takes up space. Normally in solid, liquid or gas phase.
