Characteristics of water – Did you know?

The video explains that a water molecule is composed of two hydrogen atoms and one oxygen atom, represented chemically as H2O. It details the chemical symbols for hydrogen (H) and oxygen (O), and clarifies why water is referred to as H2O.

What elements make up a water molecule?

• Two oxygen atoms and one hydrogen atom

• One hydrogen atom and two oxygen atoms

• Two hydrogen atoms and one oxygen atom

• Two hydrogen atoms and two oxygen atoms

What is the chemical symbol for a hydrogen atom?

• O

• H

• Hy

• He

How is oxygen represented in chemical symbols?

• O

• Ox

• O2

• Oxy

Why is water known as H2O?

• Because it contains two hydrogen atoms and two oxygen atoms

• Because it contains one hydrogen atom and two oxygen atoms

• Because it contains two oxygen atoms

• Because it contains two hydrogen atoms and one oxygen atom

Which of the following correctly represents the composition of water?

• H2O

• HO2

• H2O2

• OH2