Transcript The Structure of Atoms - Doral Academy Preparatory

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.
The Structure
of Atoms
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:
1. What do the objects you made have in
common? In what ways are they
different?
2. What effect do you think increasing or
decreasing the number of items will
have on the identity of the objects you
created?
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.
Part 1 Lecture Topics
*parts of an atom
*size of an atom/scientific notation
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.
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
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
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 atom’s 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)
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
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
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