Across
- 5. An uncharged subatomic particle found in the nucleus of an atom.
- 6. A large molecule made up of repeating units called monomers.
- 8. A method of volumetric analysis in which a solution of known concentration is added to a solution of unknown concentration until the reaction is complete.
- 10. The positive electrode. It is positively charged because electrons are drawn away from it.
- 11. Negative ions; these are attracted to the anode.
- 13. The amount of a solute that can dissolve in a solvent at a given temperature.
- 14. A substance which neutralises an acid, producing a salt and water as the only products. A base is a hydrogen ion (H⁺) acceptor.
- 16. The central part of an atom, containing protons and neutrons.
Down
- 1. The gain of oxygen or the loss of electrons in a chemical reaction.
- 2. The substance that is dissolved in a solvent to form a solution.
- 3. A simple molecule that can be polymerized to form a polymer.
- 4. A positively charged subatomic particle found in the nucleus of an atom.
- 7. The amount of substance that contains as many particles (atoms, ions, or molecules) as there are in 12 grams of carbon-12.
- 9. Organic compounds containing the –OH group. They have the general formula CnH2n+1OH. Ethanol is by far the most important of the alcohols and is often just called ‘alcohol’.
- 10. A soluble base which produces OH⁻(aq) ions in water.
- 11. The smallest part of an element that can exist as a stable entity. It has a central nucleus containing neutrons and protons surrounded by electrons in shells. 1 mole of atoms has a mass equal to the relative atomic mass (Ar) in grams.
- 12. The substance that dissolves the solute to form a solution.
- 15. A substance which dissolves in water, producing H⁺(aq) ions as the only positive ions. An acid is a hydrogen ion (H⁺) donor.