Chemistry Midterm Review

Front

What is filtration?

Back

The separation of a mixture's particles through the differences in particle size.

Front

What is the formula for iron (II) oxide?

Back

FeO.

Front

Name the compound Li₂SO₃.

Back

Lithium sulfite.

Front

What type of bond does a polar molecule have?

Back

Polar bond.

Front

According to the octet rule, how many valence electrons do most atoms strive to have?

Back

8.

Front

What is the definition of a mixture?

Back

A combination of two or more substances that retain their individual properties.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only 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 a chemical reaction?

Back

A process that involves the rearrangement of the molecular or ionic structure of a substance.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.