Across
- 3. a chemical bond made by electrons of other atoms being shared with each other
- 6. when chemical bonds are broken or made
- 8. a chemical bond made by opposite magnetic charges attracting each other, they transfer electrons to other atoms
- 10. warmth exerted when chemical reactions occur
- 11. a particle that contains protons, neutrons and electrons
Down
- 1. things in the outer layer of an atom that is involved in chemical bonds
- 2. the correct way of writing out ionic crystal formulas
- 4. a chemical reaction that absorbs heat
- 5. an easy way of showing/identifying a component of atoms and molecules
- 7. two or more atoms chemically bound together
- 9. a way to hold atoms together