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