Across
- 2. Not able to be undone or altered.
- 4. The process of burning something.
- 5. Act in response to something; respond in a particular way.
- 8. properties A property (as colour, hardness, boiling point) of matter not involving in its manifestation a chemical change
- 10. Physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.
- 12. A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
- 13. A substance or object that is solid rather than liquid or fluid.
Down
- 1. A stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
- 3. change A change from one state (solid or liquid or gas) to another without a change in chemical composition
- 6. properties A property or characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed.
- 7. A substance made by mixing other substances together.
- 9. change A usually irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition, resulting in the formation of at least one new substance.
- 11. The smallest particle of a chemical element that can exist.