Chemistry Mid-term Exam

Front

On the periodic table, the horizontal rows are called

Back

Periods

Front

Mixtures are __________ combined.

Back

Physically

Front

Elements in group 18 are called

Back

Noble Gases

Front

On the periodic table, the vertical columns are called

Back

Groups

Front

The electron configuration for Nitrogen is 1s²2s²2p³. What would the electron configuration of the ion look like if Nitrogen has a -3 charge?

Back

1s²2s²2p⁶

Front

What are the three states of matter?

Back

Solid, Liquid, Gas

Front

Define an atom.

Back

The smallest unit of an element that retains the properties of that element.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What is a chemical bond?

Back

A lasting attraction between atoms that enables the formation of chemical compounds.

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.