Across
- 7. He, Ne, Ar, Kr, Xe, and Rn, are _ _.
- 9. Symbol for neon.
- 11. Symbol for chlorine.
- 13. Light, heat, sound, and electricity are all examples of _.
- 14. The state of matter with a definite volume but not a definite shape.
- 16. Symbol for iron.
- 17. Everything that has mass and volume
- 20. Water has a density of _ g/mL.
- 22. The change from a gas to a liquid.
- 24. Mass divided by volume = _.
- 26. A _ is either an element or a compound.
- 29. The number of _ in an atom is always = to the number of electrons.
- 31. Energy that flows from warmer to cooler regions.
- 33. A measure of how fast the particles of matter are moving.
- 34. Two or more elements chemically combined form a _.
- 35. The _ _ of an element tells how many protons are in the nucleus.
Down
- 1. State of matter in which particles spread out to fill their containers.
- 2. Elements that make up a compound will _ their own properties.
- 3. Elements are organized on the _ table.
- 4. A _ of water has 2 H and 1 O atom.
- 5. Symbol for tin.
- 6. Negatively charged particles that travel around the nucleus of an atom.
- 8. Symbol for silver.
- 10. Substances made up of only one kind of atom.
- 12. Elements that are usually shiny and can be formed into sheets or wires.
- 15. State of matter in which particles have a definite shape and volume.
- 17. Has a variable makeup and can be physically separated.
- 18. We _ see water vapor.
- 19. Symbol for zinc.
- 21. The change from a liquid to a gas.
- 23. Formula for salt.
- 25. Symbol for copper.
- 26. Symbol for silicon.
- 27. Type of mixture in which particles are spread evenly throughout.
- 28. Symbol for aluminum.
- 30. There are about _ elements found in nature.
- 32. Solution of two or more metals.