Consider the oxidation of sodium metal to sodium oxide described by the balanced equation: 4 na(s) + o2(g) → 2 na2o(s) as you can see there are letters in parentheses after each substance. show you know the meaning of these letters by filling in what they stand for:

s stands for solid

g stands for gas

Explanation:

Na_{(s)}  + O_{2(g)}  →   2Na_{2}O_{s}

The lettered subscript describes the state of the matter of the reacting atoms,compounds and molecules. It also shows the state of matter of the products formed.

s stands for solid

g stands for gas

Some other reactions have l which is liquid and aq which is aqeous.

the answer would be c

plasma - state of matter made up of electrically charged particles