Which of These Statements Best Explains the Law of Conservation

question 12

Multiple Choice

Which of these statements best explains the law of conservation of mass ?

• A) All atoms of a given element have the same weight.
• B) Atoms of different elements combine in fixed whole number ratios.
• C) The weight of an object is neither created nor destroyed in a chemical reaction.
• D) All samples of a given compound have the same proportion of constituent elements.
• E) The sum of the masses of the reactants equals the sum of the masses of the products in any normal chemical reaction.

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Definitions:

Mesoderm

The middle layer of an embryo in early development, which will eventually give rise to the muscles, bones, and circulatory system.

Umbilical Cord

The rope-like connection between the fetus and the placenta. It contains the umbilical blood vessels.

Breast Cancer

A malignant tumor that develops from breast cells and is the most common cancer affecting women worldwide.

Cervicitis

Inflammation of the cervix.