2nd 9 Weeks Exam Study Guide (2024)

Front

What is the maximum number of electrons that can occupy the 2nd shell of an atom?

Back

8

Front

How many electrons does Chlorine (Cl) need to gain or lose to achieve a full outer shell according to the octet rule?

Back

It wants to gain 1 electron.

Front

What type of bond is formed in the compound Ca(OH)₂?

Back

Ionic

Front

What type of chemical reaction is represented by the equation: BaCl₂ + 2KI -> 2KCl + BaI₂?

Back

Double Replacement

Front

What is the definition of a cation?

Back

A cation is a positively charged ion.

Front

What is the octet rule in chemistry?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of 8 electrons.

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 a chemical reaction?

Back

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

Front

What is the formula for calculating the maximum number of electrons in a shell?

Back

The formula is 2n², where n is the shell level.

Front

What is a double replacement reaction?

Back

A double replacement reaction is a type of chemical reaction where two compounds exchange ions to form two new compounds.