Chemistry Fall Final Review

Front

What is a chemical property?

Back

A characteristic of a substance that can only be observed during a chemical reaction, such as the ability to react with oxygen.

Front

Balance the reaction: Na + O2 -> ?

Back

4Na + O2 -> 2Na2O

Front

What is the measure of a tetrahedral bond angle?

Back

109.5 Degrees

Front

What is a p block element?

Back

Elements found in groups 13 to 18 of the periodic table, such as Argon (Ar).

Front

What ion is formed from Sulfur with 6 valence electrons?

Back

S^-2

Front

Define valence electrons.

Back

Electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is the octet rule?

Back

Atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight 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 mole in chemistry?

Back

A unit that measures the amount of substance, defined as containing 6.022 x 10^23 particles.

Front

What is the formula for calculating molarity?

Back

Molarity (M) = moles of solute / liters of solution.