Atoms, Molecules, And Matter

created for 5th grade science classroom

1. Physical SciencePhysical Science
Atoms, Molecules, and MatterAtoms, Molecules, and Matter

2. What is an Atom?What is an Atom?
An atom is the smallest particle of an An atom is the smallest particle of an
element that has all the properties of element that has all the properties of
that element.that element.
Atoms are the building blocks of Atoms are the building blocks of
elements.elements.

3. Structure of AtomsStructure of Atoms
Nucleus – the nucleus contains neutrons Nucleus – the nucleus contains neutrons
(no charge) and protons (positive (no charge) and protons (positive
charge).charge).
Electrons – tiny particles surrounding Electrons – tiny particles surrounding
the nucleus (negative charge).the nucleus (negative charge).

4. What is an element?What is an element?
An element is a substance that cannot An element is a substance that cannot
be broken down any further.be broken down any further.
They are the building blocks of matter.They are the building blocks of matter.
Elements combine to make the world Elements combine to make the world
around us.around us.
There are only a few elements found There are only a few elements found
alone in nature:alone in nature:

Ex: Silver and GoldEx: Silver and Gold

6. What are molecules?What are molecules?
Molecules are the smallest particles Molecules are the smallest particles
that can be divided without chemical that can be divided without chemical
change.change.
They are made of two or more atoms They are made of two or more atoms
joined together, can be the same joined together, can be the same
element or different elements.element or different elements.
A molecule of water is written HA molecule of water is written H
22O. O.
This means there are 2 atoms of This means there are 2 atoms of
hydrogen and one atom of oxygen.hydrogen and one atom of oxygen.

7. HH
O

8. H
2
O
HH
O