Introduction to Molecules
Explore the fundamental concepts of molecules, including their definition, composition, and types, suitable for Grade 10 science students.
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Introduction to Molecules
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Read each question carefully and answer to the best of your ability. Use complete sentences for short answer questions.
1. Which of the following best defines a molecule?
A single atom with a positive charge.
Two or more atoms held together by chemical bonds.
A substance that cannot be broken down further chemically.
A mixture of different elements.
2. Which type of bond involves the sharing of electrons between atoms?
Ionic bond
Metallic bond
Covalent bond
Hydrogen bond
3. The chemical formula for water is , indicating it is composed of two hydrogen atoms and one oxygen atom.
4. A molecule of carbon dioxide (CO2) consists of one carbon atom and oxygen atoms.
5. Explain the difference between an atom and a molecule.
6. All compounds are molecules, but not all molecules are compounds.
True
False
7. A diatomic molecule consists of exactly two atoms.
True
False
8. Observe the image of the water molecule below. Label the atoms present in the molecule.
