Glucose is a monosaccharide sugar. It is a product of photosynthesis and has the molecular formula C6H12O6.
Oxygen (O) is a non-metallic chemical element. Oxygen is a gas at room temperature and has no colour, smell or taste. There are 6 oxygen atoms in a glucose molecule.
Carbon (C) is a nonmetallic chemical element. Carbon exists in many different forms, including graphite. There are 6 carbon atoms in a glucose molecule.
Hydrogen (H) is a colourless, odourless, tasteless, flammable gaseous substance. There are 12 hydrogen atoms found in a glucose molecule.
Chemical bonding refers to forming a chemical bond between two or more atoms, molecules, or ions to give rise to a chemical compound.