Across
- 2. Something you keep the same in an experiment to make sure it's a fair test
- 4. A state of matter that has a definite volume but takes the shape of its container
- 6. Group in an experiment that does not receive the experimental treatment
- 7. The outcome or result that is measured and that is expected to change based on what is manipulated in an experiment
- 9. Energy transferred between systems due to a temperature difference, flowing from a hotter object to a cooler one
- 10. A graph that shows how the temperature of a substance changes as it is heated over time
- 11. A temperature scale used in science that starts at absolute zero, the coldest possible temperature where all molecular motion stops
- 13. a temperature scale with water freezing at 32°F and boiling at 212°F
- 14. A phase transition where a substance changes directly from a solid to a gas, bypassing the liquid state
- 16. Scale based on 0° for the freezing point of water and 100° for the boiling point of water
- 17. Gas turning into plasma
- 22. A phase transition from the liquid to the gas state
- 23. Plasma turning into a gas
- 24. The energy it takes to melt a solid into a liquid
- 25. All matter is composed of tiny particles (atoms, molecules, or ions) that are in constant, random motion
- 26. A state of matter with no fixed shape or volume
- 27. The fourth state of matter, which is an ionized gas found in stars and lightning
- 28. A graph that shows how a substance's temperature changes as it cools down and changes from a gas to a liquid to a solid
Down
- 1. The coldest temperature that is theoretically possible
- 3. The energy needed to turn a liquid into a gas at a constant temperature
- 5. The process where a liquid changes to a solid state as it cools
- 8. A measure of the average kinetic energy of the particles within a substance, indicating how hot or cold it is
- 12. The phase transition of a substance from a solid to a liquid, driven by an increase in internal energy
- 15. A state of matter where the particles are packed tightly together, giving it a fixed shape and volume
- 18. The factor you change in an experiment
- 19. The process where a liquid turns into a gas (vapor) below its boiling point
- 20. The phase transition where a substance changes directly from a gas to a solid without passing through the liquid state
- 21. The phase transition from gas to liquid