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
Chemical Bonds
Chemical Bonds
Common mistakes
Common mistakes
- Confusing ionic and covalent bonds. An ionic bond is between a metal and a non-metal, with electrons transferred. A covalent bond is between two non-metals, with electrons shared.
- Writing MgCl instead of MgCl₂. This is wrong because the charges do not balance.
- Believing that a covalent bond permanently transfers electrons. In a covalent bond electrons are shared, not transferred.
- Writing the wrong number of bonds because the number of electrons needed to complete the outer level was not counted correctly.
Chemical Bonds · 5 / 6