The Structure of Atoms

1
The Structure of Atoms

• Guess What Fact This diamond is made up of one
  of the most beautiful materials in the
  world-diamond. Diamond is a clear, sparkling
  crystal made up only carbon atoms.

2
Inquiry Launch Lab

• How can you make different things from the same
  parts?
• Using the given paper clips, toothpicks, and
  string try to create things that use at least 1
  item, but no more than 5 of each kind.
• Think it Over Questions
• What do the objects you made have in common? In
  what ways are they different?
• What effect do you think increasing or decreasing
  the number of items will have on the identity of
  the objects you created?

3
Home Learning

• Continue to work on ABC Book Project. Letters A
  through F due Monday.
• Due Friday of this week Structure of the Atom
  Review Questions page 219 1-10.

4
Part 1 Lecture Topicsparts of an
atomsize of an atom/scientific notation
5
What is an atom?

• Atoms are what make up elements
• Elements are naturally produced by the Earth
• Periodic Table of Elements is a table that shows
  the properties of elements like atomic number,
  atomic symbol, and atomic mass.

6
The Parts of an Atom

• According to the Modern Atomic Model, the atom
  has a nucleus that holds the protons and neutrons
  and then has an area space around it called the
  electron cloud where the electrons orbit in all
  directions.
• Each subatomic particle has its own charge

7
Science Use Vs. Common Use

• The Science use of the word Charge is different
  than its common use
• In science, the word charge means the electrical
  property of some objects that determines whether
  the object is positive, negative, or neutral.
• Its common use means to make a purchase with a
  credit card

8
Subatomic Particle Charges

• The basic structure of all atoms are the same
• Protons have a positive charge
• Neutrons have no charge
• Electrons have a negative charge
• The atoms nucleus has a positive charge
• The overall charge of the atom is 0 (the positive
  charge of the protons cancels out the negative
  charge of the electron)

9
Electron Cloud

• Electrons are so tiny and move so quickly that
  scientists are unable to know their exact
  location
• This is the cloud of space where electrons are
  most likely to be moving around in

10
Electron Energy

• Electrons that move in the parts of the electron
  cloud that are closest to the nucleus have MORE
  ENERGY
• Electrons that move in the parts of the electron
  cloud that are far away from the nucleus have
  LESS ENERGY

11

• Class Work Structure of Atoms Review Questions
  Part 1
• 1. Describe the Modern Model of the Atom by
  drawing and labeling the protons, neutrons,
  electrons, and electron cloud.
• 2. Explain why the nuclei of atoms always end up
  with an overall positive charge?
• 3. Why is the exact location of an electron not
  possible to know? What did scientific research of
  the atom result in about this?
• 4. What is the relationship that energy shares
  with electrons?
• 5. Write the mass of each subatomic particle in
  scientific notation
• Mass of a Proton 1.007316 grams
• Mass of a Neutron 1.008701 grams
• Mass of an Electron 0.000549 grams