Across
- 3. A one- or two-letter abbreviation used to represent an element.
- 4. The process of a liquid changing into a gas.
- 7. An element needed by humans for respiration.
- 10. The smallest unit of an element that retains its chemical properties.
- 11. The first word in the name of the table that lists all elements.
- 13. A combination of chemical symbols showing the elements in a compound.
- 15. Two or more atoms chemically bonded together.
- 16. A mixture that is evenly mixed throughout.
- 19. A mixture where one substance dissolves evenly into another.
- 23. A compound made from hydrogen and oxygen.
- 24. When a substance mixes evenly into a liquid.
- 25. A separation method using evaporation and condensation.
- 26. A technique used to separate different coloured substances.
- 27. An element found in all living things.
- 28. A substance that cannot dissolve in a particular solvent.
Down
- 1. The lightest element on the periodic table.
- 2. A method used to separate an insoluble solid from a liquid.
- 3. A compound commonly added to food, with the formula NaCl.
- 5. The process of removing different substances from a mixture.
- 6. A mixture where different parts can be seen.
- 8. A substance that can dissolve in a particular solvent.
- 9. A tiny piece of matter.
- 12. A substance made up of only one type of chemical substance.
- 14. The substance that dissolves another substance.
- 15. Two or more substances physically combined.
- 17. The substance that gets dissolved.
- 18. A valuable metal with the chemical symbol Au.
- 20. A pure substance made of only one type of atom.
- 21. A substance made when two or more different elements chemically join.
- 22. When substances undergo a chemical change.