Transcript WARM UP - Cloudfront.net

WARM UP
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Brainstorm about the following…
You may do one, or all three.
Molecules
Atoms
Building Blocks
of Life
TODAYS AGENDA
Class
Business
Finish Video
Today’s Assignment
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10 Facts or Questions from the Video
Discussion at the end of class.
Warm Up
 List
everything you know
about the periodic table.
Guess if you
need too.
 Do not list
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Elements
Agenda
1.
2.
3.
Warm Up
CB
Matter: What is it? Activity –
Complete in the front of your
notebook. Stamped at the end
of class. 2pts in your notebook
CB
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Make up Quizzes this week
O. 2-2 and 2-3 Should be complete by the
end of this week or you will be very far behind
for progress reports next week.
Notebooks collected next week for 5 week
grade. Should be worth around 40-50 pts
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About 20% of your grade
LETS PRACTICE!
Practice makes permanent, not perfect
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Complete the worksheet in your NB
If you finish early, work on homework
Rules:
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Ask three before me (Mr. Hagen)
Do not let the next table overhear your
conversation
If I (Mr. Hagen) can speak in a normal tone, the
class should be able to hear me.
Homework
All previous assignments will not be
collected after next week.
 Outline 2-2 and 3 are due for full
credit on or before Friday
 Quiz on 2-1 on Friday
 House tonight, Fox, 8/9pm
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WARM UP
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Draw and label the Atomic
Number and Atomic Mass for
the element Carbon from
the periodic table.
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Refer to the back of the
book
Draw and label the
Proton, Neutron, and
Electron for an atom of
Helium
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Refer to the Section 2-1
6
C
Carbon
12.011
Modern Atomic Theory
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Elements are composed of atoms, which
are extremely small.
All atoms of a given element have the
same chemical properties and contain the
same number of protons.
Compounds are formed by the chemical
combination of two or more different
kinds of atoms. (Whole numbers only)
Atoms are the units of chemical change
The Nature of Matter
Chapter 2-1
What’s the matter?
• MATTER:
– Anything that has mass and occupies space.
– What is matter made of?
What’s the “matter”?
• Phases
– Solid
– Liquid
– Gas
• Physical properties versus chemical
properties
– Think about burning paper
Atom
• The basic unit of all
matter
• Made up of 3 parts:
• Protons (positive)
• Neutrons (neutral)
• Electrons (negative)
• Atomic number
– # of protons
• Atomic mass
– # of protons + neutrons
Elements
• A pure substance that contains only one
type of atom.
– Hydrogen
– Oxygen
– Carbon
– Iron
• What is the difference between one
element and another?
– Each has a specific # of Protons
Periodic Table
• A whole bunch of different elements
An Element in the Periodic Table
Section 2-1
6
C
Carbon
12.011
Go to
Section:
Figure 2-2 Isotopes of Carbon
Section 2-1
Nonradioactive carbon-12
Nonradioactive carbon-13
6 electrons
6 protons
6 neutrons
6 electrons
6 protons
7 neutrons
Go to
Section:
Radioactive carbon-14
6 electrons
6 protons
8 neutrons
Atoms versus Ions
• Atoms have equal amounts of protons and
electrons
– Therefore, the net charge is ZERO
• Ions have same number of protons, but
more or less electrons
– Therefore, it will have a net charge (+ or -)
Molecules
• When atoms join together, they form
molecules
• Smallest unit of compounds
– H2
Compounds and Bonding
• Compound
– A combination of two or more elements
• Bonds
– Bonds hold two or more elements together to
form a compound
Types of Bonds
• Ionic Bond
– When electron(s) are transferred from one
element to another (One element gives
electrons to the other element)
– Makes IONS and they are attracted to each
other.
• Covalent Bond
– When two elements share electrons
Ionic Bond
Covalent Bond
Review
• Atoms are the basic units of __________
• An Ion of Sodium (Na) that has 11 protons, but
only 10 electrons will have a (positive/negative)
charge
• What is the type of bond in which electrons are
shared by two elements?
• A molecule must contain at least _______
atoms.
WARM UP
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Answer the following questions in 2-3
complete sentences.
What are the two types of bonds?
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Explain the difference between the two.
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What are Van der Waals Forces?
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Refer to 2-1 pages 38-39
CB
Molecular Model Kits