Oxygen is the most abundant element in the Earth's crust, comprising about 46.6% by mass.

The chemical symbol for gold is Au, which is derived from the Latin word 'aurum'.

Sodium bicarbonate, also known as baking soda, is a white, crystalline compound with the formula NaHCO3.

Sulfuric acid has the chemical formula H2SO4 and is a strong, corrosive acid.

Helium, neon, argon, and krypton are all noble gases, which are characterized by their low reactivity and tendency to form stable compounds.

Sodium chloride, also known as common salt, is a white, crystalline compound with the formula NaCl.

Iron, copper, zinc, and nickel are all transition metals, which are characterized by their ability to form variable oxidation states and exhibit catalytic properties.

Water has the chemical formula H2O and is a colorless, odorless, and tasteless liquid.

Nitrous oxide, also known as laughing gas, is a colorless, non-flammable gas with the formula N2O.

The element with the atomic number 11 is sodium, which has the chemical symbol Na.

Ammonium nitrate, potassium chloride, calcium phosphate, and urea are all commonly used as fertilizers to provide essential nutrients for plant growth.

Carbon dioxide has the chemical formula CO2 and is a colorless, odorless, and non-flammable gas.

Fluorine, chlorine, bromine, and iodine are all halogens, which are characterized by their high reactivity and tendency to form salts with metals.

Methane has the chemical formula CH4 and is the simplest hydrocarbon, consisting of one carbon atom and four hydrogen atoms.

Solid carbon dioxide is commonly known as dry ice and is used as a refrigerant and in various industrial applications.