Across
- 1. matter that cannot be broken down into simpler matter
- 4. small units of matter that can be broken down in subatomic particles
- 5. negatively charged subatomic particle
- 7. the location where electrons are expected to be;this area circles the nucleus
- 10. a device created by Mendeleev that arranges the elements in order of atomic number
- 11. element in the form of gas that is abundant on our plant;we need it to breath
- 12. scientific way of describing the arrangement of electrons around the nucleus;has 4 "numbers"
- 13. the study of matter and how types of matter react to each other
Down
- 2. an element with the latin name of wolfram and symbol of W
- 3. any substance in the form of a solid, liquid, or gas
- 6. a version on an element that has varying numbers of neutrons, but the same number of protons
- 8. a well-tested and widely accepted explanation of a natural phenomenon based on use of the scientific method
- 9. the word refers the outermost electrons of an atom
- 10. subatomic particle with a positive charge