Chemistry - 2nd Quarter Review

Front

1,500 meters = ___ kilometers

Back

1.5

Front

Which of the following is an accurate depiction of what an atom actually looks like?

Back

None of these

Front

1s² 2s² 2p³ is the electron configuration for...

Back

nitrogen.

Front

CaCl₂

Back

Calcium chloride

Front

The speed of light is approximately 300,000,000 meters per second. What is this number in scientific notation?

Back

3 x 10^8

Front

What is the atomic number of nitrogen?

Back

7

Front

Define an ion.

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is the difference between an ionic bond and a covalent bond?

Back

An ionic bond is formed through the transfer of electrons, while a covalent bond is formed through the sharing of electrons.

Front

What is the formula for calculating density?

Back

Density = Mass/Volume

Front

What is the pH scale used for?

Back

The pH scale is used to measure the acidity or basicity of a solution.