Question

1. An element is defined as
A. a uniform substance
B. a substance with a constant composition
C. a substance that contains two or more substances in definite proportion
D. a substance that cannot be separated into two or more substances by ordinary or chemical means​

Answer 1

Answer:

An element is composed of atoms that have the same atomic number

Answer 2

Answer:

D is the correct answer because element cannot be separate by physical or chemical means

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