Chemistry Semester 1 Exam Review

Front

What is the term for quanta of light?

Back

Photon

Front

Which form of an element contains the same number of protons, but a different number of neutrons?

Back

Isotope

Front

Which of the following is a metalloid? (As, O, Br, Kr)

Back

As

Front

What type of bond is characterized by high melting and boiling points?

Back

Ionic

Front

The distance between two consecutive peaks or troughs in a wave is called?

Back

Wavelength

Front

What is the definition of an ion?

Back

An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

Front

What is the pH scale used for?

Back

To measure the acidity or basicity of a solution.

Front

What is the principle of conservation of mass?

Back

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

Front

What is an acid according to the Brønsted-Lowry theory?

Back

A substance that donates protons (H+ ions) in a reaction.

Front

What is a base according to the Brønsted-Lowry theory?

Back

A substance that accepts protons (H+ ions) in a reaction.