Across
- 3. It is part of your blood and is the fourth state of matter.
- 5. The smallest part in an atom with a negative charge.
- 6. An organization of chemical elements in the order of atomic numbers. (2 words)
- 9. This happens when you put mentos in a soda or have pop rocks in your mouth. (2 words)
- 12. Same size as another particle and has no electrical charge.
- 13. The atomic number is the number of how many _______.
- 14. Some people call this word the weather.
- 15. This is when a solid turns straight into a gas.
- 17. Two elements that mix together.
- 19. It is located in the middle of the atom with another particle and has a positive charge.
- 20. A substance you can see when you are cooking.
Down
- 1. When a liquid disappears and goes in the sky.
- 2. One or more atoms.
- 4. The shell of the tiniest part of an atom. (2 words)
- 7. An invisible substance that you can sometimes smell.
- 8. A state of matter you can see that has no definite shape.
- 10. Part of the water cycle when gas turns into a liquid.
- 11. Something that is hard like a rock and is the opposite of hollow.
- 16. It is in the middle of a atom and has protons and neutrons.
- 18. Everything is a solid, plasma, liquid and gas.