Question

which fundamental principle from chemistry states different samples of the same substance contain elements in the same proportions?
a) plum - pudding model
b) law of simple multiple proportions
c) law of constant composition
d) bohr model

Explanation:

• Option A: The plum - pudding model is a model of the atom, not related to the proportion of elements in a substance.
• Option B: The law of simple multiple proportions deals with the proportions of elements in different compounds formed from the same elements, not the same substance.
• Option C: The law of constant composition (also known as the law of definite proportions) states that different samples of the same substance contain elements in the same proportions.
• Option D: The Bohr model is a model of the atom, not related to the composition of substances.

Answer:

C) Law of constant composition