calcium .. i think (:
It is very reactive.
Calcium oxide is a white, caustic and alkaline crystalline solid at room temperature.
calcium is an alkaline earth metal and is a solid at room temperature
The copper sulfate reacts with the water, creating a new substance with a different color.
Snow?
It is very reactive.
White flowers turn pink when you water them with alkaline water. (example of alkaline water: water that you wash your rice.)
Symbol: Ra Phase: Solid, white alkaline metal but it reacts on exposure to air to form a dark nitride. Discovered by Marie and Pierre Curie in 1898. Atomic number: 88 Atomic mass: 226
Calcium oxide is a white, caustic and alkaline crystalline solid at room temperature.
Sodium carbonate is added to 'soften' hard water (reacts with calcium and magnesium ions), however this water is NOT drinkable (potable).
Lawrencium is not known to be flammable because it is a radioactive metal that is most stable in a solid state at room temperature. Its properties are not well-studied due to its rarity and short half-life.
Chlorine.
calcium is an alkaline earth metal and is a solid at room temperature
CaSO4 1/2 H2O. Calcium sulfate hemihydrate. This reacts exothermically, i.e gives off heat, when it reacts with water to form CaSO4 2 H2O, Calcium sulfate dihyrate also known as gypum, a white solid.
Chalk can be dissolved in water and it's white.
Egg white is slightly alkaline, with a pH ranging from 7.6 to 8.0, due to the presence of basic amino acids such as lysine and histidine.
Calcium. It reacts with water to form a solution of calcium hydroxide which can then react with carbon dioxide to form calcium carbonate, a white precipitate. You will get similar results with strontium and barium.