Science experiments · lesson 20 of 30 · free

Part 2 test: kitchen chemistry and life — Science experiments for kids

This test mixes questions from all nine kitchen chemistry and life experiments: baking soda and vinegar, the turmeric indicator, lemon invisible ink, sprouting seeds, transpiration, the yeast balloon, butter, salt crystals and separating mixtures. Pass it to earn the Part 2 badge.

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Got it? Practise ↓

What you do

Find the experiment, use the idea — “decide which experiment a question is about, then use its science”

  1. 1. Read the question and find its experiment.
  2. 2. Use that experiment’s idea — acid and base, indicator colours, chemical change, what seeds and yeast need, transpiration, crystals or filtering.
  3. 3. For a fair-test question, find what is changed, kept the same and measured.
  4. 4. For a safety question, choose what keeps everyone safe.

Use it for: Revision of Part 2 before a school science test, quiz or science fair.

Worked example: 🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? → it turns yellow again

  1. Lemon juice is an acid; it cancels out the base.
  2. So the turmeric goes back to yellow.

Check: Vinegar and baking soda make carbon dioxide — so does yeast eating sugar ✓

▶ Watch it animated

✏️ Practice

Work it out in your head or on paper, type the answer and press Check. Stuck? Press “Show me how”.

Right: 0 · Tried: 0

🏁 Lesson 20 test

20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.

🏅 Sign in with Google to earn the 🥼 Kitchen Chemist badge when you pass — and a certificate when you finish all 10 lessons of Part 2 · Kitchen chemistry and life. You can still take the test without signing in.

🖨️ Kitchen Chemistry Experiments Test Worksheet

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