Welcome back! I hope you had a good break :)
Roses & Thorns...
Important Upcoming Calendar Dates:
-Tutorial today & tomorrow
-Only 4 class periods before FPC final/end of semester 1
-Finals Schedule
-FPC Final is: Per 3 1/22, Per 4 1/20
What did we do last time?
Magnet Lab - Investigating Charged Objects
-4.2 The Structure of an Atom (right side)
Learning Objective: I can identify the structure of an atom
and the atomic number and mass number of elements
Notes:
-Every living and nonliving thing is made up of matter, and all matter is made up of atoms - the smallest unit of matter that cannot be broken down by chemical means.
-Atoms are made of:
protons +
electrons -
neutrons (no charge)
-Since each atom has the same number of protons and electrons, they have no overall charge (cancels out charge)
-The Periodic Table contains elements, a substance made up of atoms that have the same number of protons. An element's identity is based on its atomic number, which is the number of protons in one atom of that element.
For example, carbon's atomic number is 6.
-The chemical reactions covered in this chapter involve electrons.
-A change in the number of electrons does not change an atom's identity.
-Atomic structure:
Electrons fill the outer shells of an atom
Only 2 electrons can fill the innermost shell
Outer shells hold eight and prefer to have their outer shell filled, making them stable.
-Hydrogen is stable when it only has 2 valence electrons
-A compound is a substance make of the bonded atoms of two or more different elements.
Watch this video 'Atomic Structure' to help explain the structure of atoms
Roses & Thorns...
Important Upcoming Calendar Dates:
-Tutorial today & tomorrow
-Only 4 class periods before FPC final/end of semester 1
-Finals Schedule
-FPC Final is: Per 3 1/22, Per 4 1/20
What did we do last time?
Magnet Lab - Investigating Charged Objects
-4.2 The Structure of an Atom (right side)
Learning Objective: I can identify the structure of an atom
and the atomic number and mass number of elements
Notes:
-Every living and nonliving thing is made up of matter, and all matter is made up of atoms - the smallest unit of matter that cannot be broken down by chemical means.
-Atoms are made of:
protons +
electrons -
neutrons (no charge)
-Since each atom has the same number of protons and electrons, they have no overall charge (cancels out charge)
-The Periodic Table contains elements, a substance made up of atoms that have the same number of protons. An element's identity is based on its atomic number, which is the number of protons in one atom of that element.
For example, carbon's atomic number is 6.
-The chemical reactions covered in this chapter involve electrons.
-A change in the number of electrons does not change an atom's identity.
-Atomic structure:
Electrons fill the outer shells of an atom
Only 2 electrons can fill the innermost shell
Outer shells hold eight and prefer to have their outer shell filled, making them stable.
-Hydrogen is stable when it only has 2 valence electrons
-A compound is a substance make of the bonded atoms of two or more different elements.
Watch this video 'Atomic Structure' to help explain the structure of atoms
Make vocabulary flashcards:
proton
neutron
electron
atomic number
mass number
isotopes-Do 4.2 worksheet: Atomic Structure
Watch NOVA Video: Island of Stability (start at 3:38; 13:10)
1. What is element #92, the last of the naturally occurring elements?
2.What makes a nucleus 'doubly magic?'
3. How do you 'add' atoms together?
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