QUESTION 1
1.1. Various possible options are provided as answers to the following questions.
Choose the correct answer and write down the appropriate letter (A - D) next
to the question numbers (1.1.1 - 1.1.10)
1.1.1.
Oxygen gas is an example of a ...
A.
mixture
B. compound
C. molecule
D. matter
1.1.2.
1.1.3.
114
An ion which has 19 protons, 19 neutrons, and 18 electrons is...
A. negatively charged
B. positively charged
C. neutrally charged
D. electrostatically charged
ONE of the following is NOT a characteristic of covalent bonding.
A. It has a very high melting point and boiling point
B. It is formed by complete sharing of electrons
C. It is formed between two non-metals
D. It has a low melting point and boiling point
Indicate which of the following chemical formulae represent organi

Molecules of elements contain single types of atoms, while compounds contain multiple types of atoms bonded together. Oxygen gas is a diatomic molecule with two oxygen atoms bonded together.

Explanation:

Molecules of elements consist of only one type of atom, while molecules of compounds contain two or more different types of atoms bonded together. For instance, oxygen gas (O₂) is an example of a diatomic molecule, where two oxygen atoms are covalently bonded together.

Learn more about Molecules and compounds here:

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