Across
- 2. - Anything about a substance that can be observed or measured without altering its chemical composition.
- 4. - The relatively slow form of vaporization in which liquid particles obtain sufficient energy to change to the gaseous state through the random collisions of particles.
- 7. - The change of state from a liquid to a solid.
- 8. - A model that states that all physical matter exists in the form of particles.
- 9. - The change in state directly from a gas (vapor) to a solid without condensing first.
- 14. - The change of state from a solid to a liquid.
- 16. - The change of state from a liquid to a gas (vapor).
- 18. - A pure substance that consists of atoms with the same atomic number.
- 19. - The state of matter in which particles are far apart, move rapidly, and have little interaction with each other.
- 21. - The relatively fast form of vaporization in which the energy within a liquid creates higher pressure within the liquid than the air pressure outside the liquid.
- 22. - The state of matter in which particles are close together, but able to move around.
- 23. - A physical combination of two or more substances in a changeable ratio.
- 25. - A particle consisting of two or more atoms covalently bonded together.
- 26. - A gas-like state of matter, formed at very high temperatures, that consists of high-energy ions and free electrons.
- 27. - The mass per unit volume of an object.
- 28. - A mixture that has a uniform appearance throughout; also known as the solution, especially of a solid dissolved in liquid.
- 31. - A property of a substance that describes how its chemical identity changes in the presence of another substance or under certain conditions.
- 32. - The change in state directly from a solid to a gas (vapor) without melting first.
- 33. - A material made of only one kind of element or compound.
Down
- 1. - The temperature at which a liquid starts to boil.
- 3. - The law that states that the masses of chemical substances combine in definite, characteristic integer ratios when forming compounds.
- 5. - A mixture that does not have a uniform appearance since the combined substances are unevenly distributed.
- 6. - The building blocks of all matter; consists of protons, electrons, and (usually) neutrons.
- 10. - The measure of the amount of matter in an object.
- 11. - A pure substance consisting of atoms of two or more elements that are chemically combined in a fixed ratio.
- 12. - A change that alters the chemical composition of a substance.
- 13. - Any change in matter that does not alter its chemical or nuclear composition.
- 15. - The law that states matter can neither be created nor destroyed, but can only change form.
- 16. - The space enclosed or occupied by an object.
- 17. - The force of gravity acting on the matter in an object.
- 20. - The state of matter in which particles vibrate in fixed positions, giving a substance a fixed shape and volume.
- 24. - Anything that has mass and occupies space.
- 29. - The change of state from a gas (vapor) to a liquid.
- 30. - The temperature at which a solid turns to a liquid.