Chemistry Final exam Review

Front

What does the atomic number tell you?

Back

The atomic number indicates the number of protons in the nucleus of an atom and its position on the periodic table.

Front

What type of charge does a proton have?

Back

A proton has a positive charge.

Front

If nonmetals are more likely to gain electrons, they will form...

Back

They will form anions.

Front

Balance this equation: K + O₂ → ?

Back

4K + 1 O₂ → 2K₂O.

Front

What is the formula for the compound formed by Ca²⁺ and N³⁻?

Back

The formula is Ca₃N₂.

Front

What is a cation?

Back

A cation is a positively charged ion formed when an atom loses one or more electrons.

Front

What is an anion?

Back

An anion is a negatively charged ion formed when an atom gains one or more electrons.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configurations, and recurring chemical properties.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What is a chemical reaction?

Back

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