Which is most likely a solid at room temperature?

a)
chlorine

b)
hydrogen

c)
neon

d)
potassium

Answer;

D) potassium

Explanation;

-Potassium is a soft solid with a low melting point, and can be easily cut with a knife.

-Potassium is an alkali metal element that is a solid at room temperature. It is very reactive with water so it is stored in oil to exclude moisture.

the law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products. because atoms are only rearranged in a chemical reaction, there must be the same number of sodium atoms and chlorine atoms in both the reactants and products