Level 3 · Science S3.6

Elements, mixtures, reactions and acids

Some things are pure and some are mixed, and some changes make brand new substances.

Learn what an element and a compound are, why air and sea water are mixtures, and how to separate them. Then follow rusting and burning, test acids and alkalis with red cabbage, and see how an acid and an alkali cancel out.

Start readingS3.6.1 Elements and compounds

8 chapters. Your place is kept on this device only.

You are ready for this book if

You can explain why sugar seems to vanish when you stir it into water.

Contents

  1. 1Elements and compounds, readunderstood
  2. 2Pure substances and mixtures, readunderstood
  3. 3Separating mixtures, readunderstood
  4. 4Physical and chemical changes, readunderstood
  5. 5Rusting and other reactions, readunderstood
  6. 6Burning and fire safety, readunderstood
  7. 7Acids and alkalis, readunderstood
  8. 8Neutralisation, readunderstood

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For parents and teachers

For learners who can read a page alone and use the four operations. In many schools this fits children of about 11 to 13, and older learners can use it too. Every activity uses things from a kitchen: water, salt, jars, nails, paper, vinegar, baking soda and red cabbage. Hot water for the cabbage, and any candle, need a grown up. Bleach, toilet cleaner and every other cleaning product stay out of the activities, and nothing is tasted. A learner can work alone: every exercise has its answer and the reason for it.

Strand: Matter. Written and drawn by attnom. Free to read, print and share.