Across
- 3. a small particle that is a building block of matter
- 5. number this is under the name of each element on the periodic table
- 6. a gas that enables files to burn and when combined with carbon becomes carbon dioxide
- 9. a type of mixture in which the individual substances are not evenly mixed
- 10. a type of substance containing atoms of two or more different elements chemicly bonded together
- 14. atoms can combine and arange in this many different ways
- 15. the small 2 in Co2
- 16. the diameter of this is about 1 million time bigger than an atom
- 18. a black solid and when bonded with oxygen forms carbon dioxide
- 19. the combination of symbols and numbers that represents a compound
- 20. is a substance that consists of just one type of atom
- 21. protons and neutrons make up this
Down
- 1. matter with composition
- 2. a type of mixture in which the individual substances are evenly mixed
- 4. that can vary in composition
- 7. moves with neutrons around the Nucleus
- 8. has mass and takes up space and is matter but not sound or light
- 11. means to form a solution by mixing evenly
- 12. part of an atom and starts with a p
- 13. electrons move quickly around this area
- 17. anything that has mass and takes up space