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1.5 Acids and Bases
Terms used for atomic strucure, acids and bases
| Term | Definition |
|---|---|
| proton | sub atomic particle, found in nucleus, + charge, has mass |
| mass number | Stuff with mass in atom (= protons + neutrons) |
| Ion | atom that's gained or lost e s to get full outer shell |
| electron arrangement | 2, 8, 8 ... |
| neutralisation | acid + base (or carbonate) → water + salt (+ CO₂) |
| Atom | building blocks of matter (same no. + and -) |
| element | substance made up of one atom type only |
| neutron | sub atomic particle, found in nucleus, no charge, has mass |
| electron | sub atomic particle, found in shells around nucleus, - charge, no mass |
| atomic number | no. of protons in an atom |
| pH | indicates the proportion of H⁺ ions in a substance |
| indicator | changes colour depending on the pH |
| Acid | Has an excess of H+ ions |
| ionic compound/salt | metal ion + non-metal ion |
| isotope | an atom with a different number of neutrons |
| Base | has an excess of OH- ions |
| alkali | a base that dissolves in water |
| Acid + Base → | Salt + Water |
| Acid + metal carbonate → | metal salt + water + carbon dioxide gas |
| acid + metal oxide → | metal salt + water |
| acid + metal hydroxide → | metal salt + water |
| acid + hydrogen carbonate → | metal salt + water + carbon dioxide |
| Formula for Hydrochloric acid | HCl |
| Formula for sulfuric acid | H₂SO₄ |
| Formula for nitric acid | HNO₃ |
| Formula for carbonate ion | CO₃²⁻ |
| Formula for hydrogen carbonate ion | HCO₃⁻ |
| Magnesium hydroxide + hydrochloric acid→?+? | magnesium chloride + water |
| sodium oxide + sulfuric acid → | sodium sulfate + water |
| potassium carbonate + nitric acid→ | potassium nitrate + water + carbon dioxide gas |
| What do you observe if you react an an acid (i.e HCl) with any carbonate (i.e. calcium carbonate) | fizzing. Due to the formation of carbon dioxide |