What do all pure substances have in common? A. They are made up of atoms or groups of atoms. B. They cannot be

Question

What do all pure substances have in common?
 A. 
They are made up of atoms or groups of atoms.
 B. 
They cannot be broken into smaller pieces.
 C. 
They cannot be mixed with other substances.
 D. 
They do not change in chemical reactions.

GPT-5 mini · Answer

A. They are made up of atoms or groups of atoms.

Explanation: A pure substance (an element or a compound) has a definite composition and is made of atoms or fixed groups of atoms (molecules/formula units). Options B–D are false: pure substances can be chemically broken down (compounds) and can participate in reactions, and they can be mixed with other substances to form mixtures.

What do all pure substances have in common?
A.
They are made up of atoms or groups of atoms.
B.
They cannot be broken into smaller pieces.
C.
They cannot be mixed with other substances.
D.
They do not change in chemical reactions.

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What do all pure substances have in common? A. They are made up of atoms or groups of atoms. B. They cannot be broken into smaller pieces. C. They cannot be mixed with other substances. D. They do not change in chemical reactions.

All Answers 1

Submit Your Answer

What do all pure substances have in common?
A.
They are made up of atoms or groups of atoms.
B.
They cannot be broken into smaller pieces.
C.
They cannot be mixed with other substances.
D.
They do not change in chemical reactions.