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