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Science
Acid and bases
| Question | Answer |
|---|---|
| Acids have a sour ______ | Taste |
| Acids attck metals stone materials and flesh so they are ? | Corrosive |
| Acid turns blue litmus ______ | Red |
| Which acids have a ph close to zero? Strong or weak | Strong |
| Most acids react with most metals to realease what? | Hydrogen gas |
| Metal + acid -----> | Salt + hydrogen |
| Acid reacts with carbonates to form | Carbon dioxide |
| Acid + base ----> | Salt and water |
| Equation for neutrilisation? | Acid + base = salt and water |
| Bases are the ________to acids | Opposite |
| Bases that are soluble in water are called ? | Alkalis |
| Alkalis are soapy to touch because they ______ | React with natural oils on the skin to make soap |
| Are bases corrosive? | Yes |
| Bases turn red litmus ? | Blue ___ blue for base |
| Bases have a ph ___ | Bigger than 7 |
| Ammonia has a ph close to ? | 7 |
| Sodium hydroxide has a ph closer to ? | 14 |
| Ammonia metal hydroxides and metal oxides are all? Acid/base | Bases |
| Bases neutrilise acids by… | Forming salt and water |