小学 / Matter and Energy 2 / 5

How Things Dissolve

In this lesson, you will learn about “how things dissolve,” one of the especially important topics in matter and energy. Rather than memorizing words alone, aim to explain the mechanisms and reasons in your own words.

Key Points
The amount that dissolves changes depending on the amount and temperature of the water. Filtration separates undissolved substances, while evaporation removes dissolved substances.
Points to Remember
  • Check the reasons, not just the conclusions
  • Distinguish similar words and exceptions
  • Try applying the same way of thinking to other examples

Practice

  1. Explain the key points in two sentences.
  2. Give one common misunderstanding and explain what is different about it.
  3. Check your understanding by applying it to familiar or specific examples.

Questions and answers for this lesson

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