Curriculum
Science — First Preparatory
Unit 1: Matter
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Unit 2: Forces
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Unit 3: Life
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Unit 4: Earth and Space
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Text lesson
Matter and Its Properties
Matter and Its Properties
Common mistakes
Common mistakes
- Confusing mass with weight. Mass does not change with place; density is the mass of a unit volume.
- Believing that large objects are always heavier than small objects. Density decides whether an object floats or sinks, not size alone.
- Confusing a mixture with a compound. In a mixture each component keeps its properties; in a compound the elements are chemically combined in fixed ratios.
- Treating burning and rusting as physical changes. They are chemical changes because new substances form.
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