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प्रश्न
Define the following term with an example.
Compound
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उत्तर
Compound: A compound is a pure substance that is formed when the atoms of two or more elements combine chemically in definite proportions.
Ex: H20, NaCl.
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संबंधित प्रश्न
Fill in the blank
An ion with negative charge is called _______
Define: Chemical bond
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| Datum | To deduce |
| \[\ce{_11^23Na}\] | Neutron number |
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Project.
To have an idea of what atoms are, students can be asked to construct atoms using pipe cleaners (thin metal wires-electron shells), pompoms (balls-different colours for protons and neutrons) and beads (electrons). Students will love and enjoy putting them together and they look great hanging from the ceiling in the classroom.
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