Which of the Following Is True About Gravity

question 51

Multiple Choice

Which of the following is true about gravity?

• A) Gravity of the Sun and Moon exert a pull on Earth.
• B) The mass of the Earth causes a downward pull on objects on Earth.
• C) Gravity causes ice, water, and rocks to move downhill.
• D) All of these.

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Definitions:

Ethanol

A volatile, flammable, colorless liquid alcohol, widely used as a solvent, in medicine, and as the intoxicating ingredient in alcoholic beverages.

Substitution Reaction

A chemical reaction in which an atom or group of atoms in a molecule is replaced by another atom or group of atoms.

Mechanism

The detailed process by which a chemical reaction occurs, at the level of molecular structure.

Protic Solvents

Solvents that have hydrogen atoms capable of forming hydrogen bonds, often used in reactions requiring proton transfer.