Physical Science Final Review

Front

What are the reactants in a combustion reaction involving methane?

Back

CH4 and 2 O2

Front

What does the arrow in a wave diagram represent?

Back

Amplitude

Front

What is a subatomic particle that has a negative charge?

Back

An electron

Front

What is a mixture with more solute dissolved in the solvent than is usually soluble called?

Back

Supersaturated

Front

How many valence electrons does Nitrogen have?

Back

5

Front

What is the definition of a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the pH scale used for?

Back

To measure the acidity or basicity of a solution.

Front

What is the definition of a solvent?

Back

A substance that dissolves a solute, resulting in a solution.