What is Ar the symbol for?

What is the symbol for Carbon?

What is the symbol for potassium?

Which of these elements is a liquid at standard conditions?

What is the element for Mg?

Which of the following gases can be used for storage?

Give the ratio in which hydrogen and oxygen are present in water by volume.

What is the Element for Cu?

What is the symbol for Sodium?

What is the chemical formula of water molecule?