Question

1 what is chemistry? (continued)
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1. explain why the study of chemistry should be important to everyone
2. define substance and give two examples of things that are substances.
3. explain why there are different branches of chemistry.

Explanation:

1. Chemistry is crucial as it helps understand matter - its composition, structure, properties, and reactions. It impacts daily life in areas like medicine, food, materials, and environmental protection.
2. A substance is a form of matter with a definite composition and distinct properties. Examples include water (H₂O) and sodium chloride (NaCl).
3. Different branches of chemistry exist because of the vast scope of the subject. Each branch focuses on specific aspects such as organic chemistry on carbon - containing compounds, inorganic chemistry on non - carbon compounds, etc.

Answer:

1. Chemistry helps understand matter and impacts daily life in multiple areas.
2. A substance is matter with definite composition and properties. Examples: water, sodium chloride.
3. Due to the vast scope of chemistry, different branches focus on specific aspects.