Across
- 1. change inside of an organism
- 5. sharp, acid, oxygen
- 6. dealing with chemistry
- 8. iron
- 11. stable internal conditions
- 12. reaction to a stimulus
Down
- 2. smallest unit of an element
- 3. mass
- 4. script, write
- 7. change outside of an organism
- 9. same amount of reactants and products
- 10. mixture of multiple elements