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Water Molecules (Experiments: (needle (forms a film when still), Heat…
Water Molecules
Experiments:
Heat effect:
colour
needle
forms a film when still
Images.
Molecules are made up of atoms that are held together by chemical bond.
A atom is the smallest particle of a chemical element that can exist.
What is a atom?
A thing used to tie something or to fasten things together.
About 70% of the earth's surface is covered with water.
how is water molecule formed?
Most chemicals shrink and sink when they freeze, but water expands and floats.
water molecules
How much of the earth is covered of water?
an atom can bond with other atoms to make a molecule.
What is chemical bond?
Each water molecule is made out of two hydrogen atom and one oxygen atom H20.
Answers.
Questions.
