📚 Part 1: Cloze Activity

Word Bank: acid  |  base  |  neutral  |  7  |  cloudy  |  carbon dioxide  |  salt  |  water  |  hydroxide  |  carbonate  |  pH  |  limewater

1. The   scale is used to measure how acidic or alkaline a solution is. It runs from 0 to 14.

2. A solution with a pH below   is called an  .

3. A solution with a pH above 7 is called a  .

4. Distilled water has a pH of exactly 7, which means it is  .

5. When an acid reacts with a metal  , the products are a salt and water only.

6. When an acid reacts with a metal  , the products are a  ,  , and carbon dioxide gas.

7. The gas produced in acid + carbonate reactions is called  .

8. To test for carbon dioxide, the gas is bubbled through  . A positive result is shown when the solution turns  .

✏️ Part 2: Short Answers & Word Equations

📝 Success Criteria, Differentiation & Dyslexia-friendly Options

• State whether a solution is an acid, base or neutral using pH ranges.

• Write word equations for acid + metal hydroxide and acid + metal carbonate reactions.

• Describe the limewater test for CO₂ and the evaporation test to recover salt.

• Support: Refer back to the word bank in Part 1 to help complete word equations in Part 2. Sentence starters are provided, e.g. "acid + metal carbonate → _____ + _____ + _____".

• Extend: Ask higher-level students to suggest ionic equations or predict pH changes during a reaction.

• Practical: Offer a labelled diagram for students who benefit from visual prompts.

• Use short sentences and larger font when printing.

• Provide coloured overlays or change background colour to reduce visual stress.

• Give key vocabulary list (acid, base, neutral, carbonate, hydroxide, carbon dioxide, salt) with simple definitions.

Always wear eye protection and gloves during practicals. Neutralise spills and wash hands after handling acids or bases.