Across
- 3. he amount of space in a object
- 6. a table that has all the chemical elements on it
- 8. when you melt ice it becomes a ?
- 10. They are parts of the periodic table
- 13. This is also known as the Kinetic Theory
- 14. The smallest particle
- 16. Electrons have a ? charge
- 17. The middle of of the atom
- 18. The degree of heat.
- 19. below 0C
- 23. A sign of a chemical change.
- 25. Protons have a ? charge
- 26. a stage in the process of changing
- 27. Has a positive charge and is part of a atom
- 29. Is part of a atom has a neutral charge.
Down
- 1. A change when a new substance is formed and you can't change it back to what you started with.
- 2. A group of atoms bonded together
- 4. A change when no new substance is formed and you can get back to what it was before.
- 5. Atoms and molecules are in ?
- 7. point The temperature at which liquid boils.
- 9. number of protons is called the ?
- 11. heat causes cold stuff and other things to do this.
- 12. A neutron has a ? charge
- 15. The number of protons and neutrons in the nucleus.
- 20. Is part of a atom has a negative charge.
- 21. 2,000 grams can also be 2 ?
- 22. a liquid evaporates it turns into a ?
- 24. A thing with two or more different elements.
- 28. when you freeze water it turns from a liquid to a ?