matter

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Across
  1. 2. - The temperature at which a liquid turns into a gas.
  2. 5. - Forces that act on objects without physical contact, like gravity and
  3. 9. are in constant motion.
  4. 11. - A theory that describes how matter is made up of tiny particles
  5. 13. - An experiment where only one variable is changed at a time to
  6. 19. - Ice that forms on the surface of water, protecting aquatic life by
  7. 20. its effects.
  8. 24. - Forces that pull particles together.
  9. 26. - The mass per unit volume of a substance.
  10. 27. - The amount of space an object occupies, which can change during a phase
Down
  1. 1. - When matter increases in volume due to heating.
  2. 3. a liquid.
  3. 4. - A tool that measures temperature by the expansion or contraction
  4. 6. - When matter decreases in volume due to cooling.
  5. 7. - A force that pulls objects towards the center of the Earth.
  6. 8. - A temperature scale where 0°C is the freezing point of water and 100°C is
  7. 10. boiling point.
  8. 12. the water underneath from freezing.
  9. 14. - The force exerted by magnets when they attract or repel each other.
  10. 15. - Increasing the temperature of a substance, causing particles to move faster.
  11. 16. - A state of matter with a definite volume but no definite shape.
  12. 17. - The process of matter changing from one state (solid, liquid, gas) to
  13. 18. - The amount of matter in an object, which remains constant during a phase change.
  14. 21. - A state of matter with a definite shape and volume.
  15. 22. - The temperature at which a liquid turns into a solid.
  16. 23. - A state of matter with no definite shape or volume.
  17. 25. - Decreasing the temperature of a substance, causing particles to move slower.