Escola La Maquinista_ABOUT WATER
WHAT IS AN ATOM
• It is the smallest part of anything • It is indivisible • It has a NUCLEUS with PROTONS and NEUTRONS • It has ELECTRONS around the nucleus • You need a super microscope to see it • EVERYTHING is made of atoms, me, you, a table, the sky … • When atoms JOIN TOGETHER, they make MOLECULES • When MOLECULES join together, they make ELEMENTS
Escola La Maquinista_ABOUT WATER
ABOUT WATER This is a water molecule. Two atoms of hydrogen and one atom of oxygen, two of the most important elements, form it.
H2O An atom is the smallest part in which you can divide anything. Everything in the world is made of tiny atoms. When atoms join together they make molecules.
Escola La Maquinista_ABOUT WATER
You can find water in different forms depending on how joined are their molecules. SOLID WATER Water has a definite shape and volume. Water molecules are joined together. They can’t move. LIQUID WATER Water has not a definite shape, but it has a definite volume. Water molecules can move a bit, but not much GAS WATER Water has not a definite shape or a definite volume. Water molecules can move freely.
Escola La Maquinista_ABOUT WATER
THE THREE FORMS OF WATER 1 2
WATER
3
3
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DEFINITIONS
Water has a definite shape and volume. Water molecules are joined together. They can’t move. It is ___________________ Water has not a definite shape, but it has a definite volume. Water molecules can move a bit, but not much It is ___________________ Water has not a definite shape or a definite volume. Water molecules can move freely. It is ___________________
Escola La Maquinista_ABOUT WATER