Across
- 3. : The process in which a liquid changes into a gas.
- 6. : The process in which a gas changes into a liquid.
- 7. : The ability to do work or cause change.
- 10. Forces : Forces that act between molecules.
- 12. : A process that releases heat energy to the surroundings.
- 17. changes : A change that results in the formation of one or more new substances.
- 22. : A simplified representation that helps explain a scientific concept.
- 23. Forces : Forces that hold atoms together within a molecule.
- 24. : A systematic way of studying and collecting data to answer a question.
Down
- 1. : A process that absorbs heat energy from the surroundings.
- 2. : The measure of the average kinetic energy of particles.
- 4. : An observation that involves numbers or measurements.
- 5. : A state of matter with a definite shape and volume.
- 8. : The unit used to measure the amount of substance.
- 9. : A state of matter with no definite shape or volume.
- 11. : The process in which a liquid changes into a solid.
- 13. changes : A change that affects the form of a substance but not its chemical identity.
- 14. : The force exerted by gas particles colliding with the walls of their container.
- 15. : A state of matter made of charged particles at very high temperatures.
- 16. Change Curve : A diagram that shows how temperature changes during heating and cooling.
- 18. : A state of matter with a definite volume but no definite shape.
- 19. Molecular Theory : The theory that explains how particles move and behave in different states of matter.
- 20. : The amount of space a substance occupies.
- 21. : The process in which a solid changes directly into a gas.