Across
- 4. A solid that forms and settles out of a liquid during a chemical reaction.
- 5. A special type of mixture where one substance (the solute) is dissolved in another (the solvent), like salt in water.
- 6. A type of change where new substances with different properties are formed. It is usually irreversible.
- 12. A physical separation method used to separate an insoluble solid from a liquid.
- 13. The starting substances in a chemical reaction.
- 14. The new substances formed in a chemical reaction.
Down
- 1. A change that can be undone to get the original materials back (a key feature of most physical changes).
- 2. A chemical reaction where a substance reacts rapidly with oxygen, releasing heat and light (burning).
- 3. A characteristic used to describe or identify a substance (e.g., colour, melting point, reactivity).
- 4. A type of change that does not create a new substance (e.g., change of state, dissolving). It is usually reversible.
- 7. Two or more substances that are not chemically combined and can be separated by physical methods.
- 8. A process where substances interact and change into new substances.
- 9. A change that cannot be easily undone to get the original materials back (a key feature of most chemical changes).
- 10. (Short for Conservation of Mass) The principle that mass is not created or destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.
- 11. A chemical reaction where a substance gains oxygen. Rusting is a slow form of oxidation.