Objective: To identify the charged particles in
an atom in order to diagram
interactions between them
Energy Note: How do charged particles affect one
another?
Drill: 1. Open your Agenda to the Periodic Table.
2. Copy the information for any element
into your Drill Book.
3. Identify the number of protons, electrons,
and neutrons in your chosen element.
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ATOMS ASSESSMENT
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BALLOON DEMONSTRATION
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What do you think is going on?
On your dry erase board write 3-5 words
that you think might be involved in the
explanation.
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Types of Electric Charge
The charged parts of atoms are electrons
and protons. As you have learned, protons and
electrons are charged particles.
When two protons come close, they push
one another apart. In other words, they repel
each other. But if a proton and an electron
come close, they attract one another.
WHAT IS ANY PUSH OR PULL?
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Why do protons repel protons but attract
electrons? The reason is that they have
different types of charge. Protons and
electrons have opposite charges. The charge
on the proton is called positive (+), and the
charge on the electron is called negative (−).
The names positive and negative were
given to charges by Benjamin Franklin in the
1700s. They have been used by scientists ever
since.
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Interactions Between Charges
The two types of charge interact in specific
ways.
1. Charges that are the same repel each
other.
2. Charges that are different attract each
other.
3. Neutral particles have no effect on charged
particles.
Charged particles can exist without other
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charged particles!
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How far does the effect of
charged particles reach?
ELECTRIC FIELD – the area around a
charged particle affected by its charge
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HOMEWORK
Ditto 1-1: Electric Charges
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