Chapter 4
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Transcript of Chapter 4
Chapter 4 Lesson 1
Today You Need:4.1 Notes handout (glued in on the right side!)Pencil or pen3 colored pencils, pens, or highlighters
What is Matter?Anything that has MASS and takes up SPACEExamples of matter?The smallest unit of matter is the ATOM
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“Atom”From the Greek word atoma, meaning “INDIVISIBLE”.
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Think – Write -From the Greek word atoma, meaning “indivisible”.Using this definition, predict why the atom was called the atom.{Complete Sentences!}
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My Prediction:
Pair – Write Share with your partner.Write down their thoughts in a new color.
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My Prediction: My Partner’s Prediction:
“Atom”From the Greek word atoma, meaning “indivisible”.Greek Philosopher Democritus could believed that you could only cut matter up a certain amount of times before it was too small to be divided.
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Parts of the AtomAll Atoms are mostly EMPTY SPACE surrounding a tiny NUCLEUS.“subatomic particles” – particles that are SMALLER than an atomThere are 3 main subatomic particles.Protons, Neutrons, Electrons
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ProtonsUse your first color to highlight or shade behind the word “Protons” on your handout.Symbol: P+Charge: + 1Mass ~ 1 amu
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UnitsWhat units do we use for measuring distance?
What units do we use for measuring mass?
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UnitsWhat units do we use for measuring distance?
Inches, centimeters, miles, kilometers, yards…
What units do we use for measuring mass?
Pounds, ounces, gramsamu: ATOMIC MASS UNIT = for measuring mass
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NeutronsUse your 2nd color to highlight or shade behind the word “Neutrons” on your handout.Symbol: NCharge: 0 (Neutrons are Neutral)Mass ~ 1 amu
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ElectronsUse your 3rd color to highlight or shade behind the word “Electrons” on your handout.Symbol: e-Charge: - 1Mass ~ 0 amu
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AMU repeatWhat is amu?
Atomic mass unitUse to measure mass of subatomic particles.
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Create a ChartCreate a chart that shows the symbol, charge, and mass (amu)
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Create a ChartCreate a chart that shows the symbol, charge, and mass (amu)
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Particle Symbol Charge Mass (amu)
proton P+ + 1 1neutron N 0 1electron e- - 1 0
Lithium Atom:3P+, 4N, 3 e-
Use your 3 colors:1 color for Protons, P+2nd color for Neutrons, N3rd color for electrons, e-
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Draw a new atomDraw Berylium, BeBe has 4 protons, 4 electrons, and 5 neutrons.
Don’t forget to color-code the subatomic particles.
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