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Chemistry
Unit 1 - Part 2
| Question | Answer |
|---|---|
| What are the 7 diatomic molecules? | Hydrogen Oxygen Nitrogen Fluorine Chlorine Bromine Iodine |
| What is the state symbol for a liquid? | (l) |
| What is the state symbol for a solid? | (s) |
| What is the state symbol for a gas? | (g) |
| What is the state symbol for a solution? | (aq) |
| On the pH scale what is 1? | A strong acid |
| On the pH scale what is 6? | A weak acid |
| On the pH scale what is 7? | Neutral |
| On the pH scale what is 8? | A weak alkali |
| On the pH scale what is 14? | A strong alkali |
| What is the lowest number on the pH scale? | 1 |
| What is the highest number on the pH scale? | 14 |
| What is the pH of an acidic solution? | <7 |
| What is the pH of a neutral solution? | 7 |
| What is the pH of an alkaline solution? | >7 |
| Explain the term 'Concentrated solution' | A large amount of a solute dissolved in a small amount of solvent. |
| Explain the term 'Dilute solution' | A small amount of a solute dissolved in a large amount of solvent. |
| Give an example of a weak acid | Vinegar |
| Give an example of a strong acid | Hydrochloric Acid |
| Give an example of a weak alkali | Ammonia |
| Give an example of strong alkali | Sodium Hydroxide |