Across
- 3. Not transparent; does not allow light to pass through.
- 4. Harmful or poisonous to living organisms.
- 7. Can be drawn into a wire without breaking.
- 10. Resistant to indentation or scratching.
- 12. Ability to ignite and sustain combustion.
- 15. Prone to chemically reacting with other substances.
- 16. Properties - Characteristics related to appearance and state.
- 17. Initial substances on the left in a chemical equation.
- 18. Represents a chemical reaction using symbols and formulas.
- 20. Shift in heat as a signal of chemical change.
- 23. Speeds up a reaction but is not consumed.
- 24. Easily ignited and capable of burning.
- 26. Capable of bending without breaking.
Down
- 1. Notations for solid, liquid, gas, and aqueous.
- 2. Alteration in hue as a sign of a chemical change.
- 5. Properties - Characteristics related to chemical reactions.
- 6. Chemical reaction involving metal, oxygen, and often water.
- 8. Solid formed in a chemical reaction.
- 9. Solid formed when reactants combine in a solution.
- 11. Capable of causing gradual damage or erosion.
- 13. Allows some light to pass but scatters it.
- 14. Observable signs to identify physical and chemical changes.
- 16. Resulting substances on the right in a chemical equation.
- 19. Can be shaped or molded without breaking.
- 21. A substance that speeds up a chemical reaction.
- 22. Emission of gas as evidence of a chemical change.
- 25. Signifies "reacts to produce."