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