Hydrogen bonds with water

Biology lesson one

What is the chemical formula for water?

H2O, consisting of two hydrogen atoms and one oxygen atom.

What type of bond is formed between hydrogen and oxygen atoms in water?

Covalent bond.

How many lone electrons does an oxygen atom have in a water molecule?

Two lone electrons.

Why is oxygen described as being very electronegative?

Because it has a strong tendency to attract electrons.

How do hydrogen bonds compare to covalent bonds in terms of strength?

Hydrogen bonds are weaker than covalent bonds.

What is a key characteristic of water at normal temperature and pressure?

Its fluid nature due to hydrogen bonds.

What is created when two electrons are away from hydrogen atoms in water?

A partial positve charge.

What charge does the pair of hydrogen atoms in water create?

A partial positive charge.

What allows water molecules to have some unity while still being able to break apart?

The presence of hydrogen bonds.

What property of water is a result of hydrogen bonding?

The ability for water to exist in a fluid state.