ATOMS
The building blocks of
matter
Warm up
Observe the demonstration:
 the pot filled with water is on the
hot plate.
Describe in as much detail as
possible what is happening.
1.Copy down the table
2.For each statement in the before column, write A for agree
or D for disagree.
Matter
 Matter- anything that has mass and takes up space.
 If all of the objects you see (and some your can’t,
think air) why do they look so different from one
another?
ATOMS
 Matter has different properties based on the type of
atoms of which it is made.
 Nearly everything around you (air, water, food,
clothes) is made of atoms

https://www.youtube.com/watch?v=yQP4UJhNn0I
Breaking into atoms
 Atoms are made of smaller particles.
 The middle or nucleus of an atom is made of
protons and neutrons.
 The outer rings or cloud is made of electrons.

http://www.brainpop.com/science/matterandchemistry/atoms/
Elements
 Some matter is made of only one type of atom which
are called elements.
Elements are organized
 Elements are organized based on their size
on the Periodic Table of Elements.
 Activity:
 Look at the periodic table of elements.
 Find elements that are common in your everyday
life such as items at home or school.
 Make a list of those elements and what they are
used for.
 Are some elements more commonly found than
others?
 Infer why many of the elements are not
“everyday” or common elements.
What happens when atoms
combine?
 When atoms combine they form different
types of matter.
 Most objects, even you, are built of a
combination of atoms.
Review
 Explain how the air the you breathe fits the
definition of matter.
 Describe a substance that is made of a
combination of atoms.
 What everyday items are only made of one type
of element.
 What is the difference between water and gold?