Unit 4 review

Front

What is the coefficient for water in the balanced equation C3H8 + 5O2 → 3CO2 + 4H2O?

Back

4

Front

How many valence electrons does Fluorine need to gain or lose to achieve a full outer orbital?

Back

Gain 1 electron

Front

Define a polyatomic ion and provide an example.

Back

A polyatomic ion is an ion with multiple atoms, e.g., SO4^2-.

Front

What is the name of the compound with the formula PCl5?

Back

Phosphorus Pentachloride

Front

What is the group name and column number for Fluorine on the Periodic Table?

Back

Halogens, Group 17

Front

What is the definition of a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how an atom can bond with other atoms.

Front

What is the formula for calculating the number of valence electrons in an element?

Back

The number of valence electrons is equal to the group number for main group elements.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.