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 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 a solution, especially of a solid dissolved in a 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 block 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 that 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