Question

what are substance?

answer in 50- 100words ​

Answer 1

A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds.

The best examples of pure substances are pure elements, molecules, and compounds:

• Hydrogen gas.
• Gold metal.
• Sugar (sucrose)
• Baking soda (sodium bicarbonate)
• Ammonia.
• Diamond.
• Copper wire.
• Silicon chip.

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Answer 2

Answer:

The correct answer of this question is in this photo