A pure substance consisting only of atoms that all have the same numbers of protons in their nuclei. 

It is an element that most organism needs.

It is a pure substance that can be decomposedby a chemical change into simpler substances with a fixed ratio.

It maintains regular heartbeat, controls balance offluid, helps in lowering blood pressure.

It influences how the hormone insulin behaves in the body.

Compounds that contain hydrogen, which whendissolved in water breaks loose as a hydrogen ion is called?

Bases are called  ____________ substances, and they have their own characteristics when dissolved in water.

What is the common name of sodium hydroxide?

It is used for the defensive immunity system to work properly

It is essential for building and maintaining strong bones and teeth, strengthens heart muscles, and regulates blood clothing.

What is the symbol for hydrogen?

Substances with lustrous or shiny appearance is called?

It is a good conductor of electricity.

What is the common name of calcium hydroxide?

What is the common name of gagnesium hydroxide?