physical science mr. bythwood protons (+): atomic number neutrons: atomic mass minus protons...

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Physical Science Mr. Bythwood

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Physical Science

Mr. Bythwood

• Protons (+): Atomic Number

• Neutrons: Atomic Mass minus Protons

• Electrons (-): Same number as Protons

• Protons (+): Atomic Number

• Neutrons: Atomic Mass minus Protons

• Electrons (-): Same number as Protons

• Protons (+): Atomic Number

• Neutrons: Atomic Mass minus Protons

• Electrons (-): Same number as Protons

Atomic Particles

ParticleParticle LocationLocationMass inMass in

amuamuChargeCharge

ProtonProton

NeutronNeutron

ElectronElectron

Atomic Particles

ParticleParticle LocationLocationMass inMass in

amuamuChargeCharge

ProtonProton

NeutronNeutron

ElectronElectron

What is amu????• amu is short for atomic mass unit

• 1 amu = 1.66053886 × 10-27 kilograms

• EXAMPLE: If you weigh 150 lbs, what is that in kilograms?

1 kg = 2.2 lbs

150 lbs2.2 lbs

68.2 kg1 kg

• EXAMPLE: If you weigh 150 lbs, what is that in amu?

68.2 kg1.66 x 10-27 kg

1 amu4.11 x 10+28 amu

Atomic Particles

ParticleParticle LocationLocationMass inMass in

amuamuChargeCharge

ProtonProton

NeutronNeutron

ElectronElectron

Nucleus

Nucleus

Cloud

1

1

0

+1

-1

0

Atomic Inventory

ElementElement SymbolSymbol AtomicAtomic

NumberNumber

Mass Mass NumberNumber

ProtonsProtons NeutronsNeutrons ElectronsElectrons

He

Mg

Fe

Ar

2

12

26

18

4

24

56

40

2

12

26

18

2

12

30

22

2

12

26

18

Helium

Magnesium

Iron

Argon

Atomic Inventory

ElementElement SymbolSymbol AtomicAtomic

NumberNumber

Mass Mass NumberNumber

ProtonsProtons NeutronsNeutrons ElectronsElectrons

Zn

Br

Al

U

30

35

13

92

65

80

238

30

35

13

92

35

45

14

146

30

35

13

92

Zinc

Bromine

Aluminum

Uranium

27

Atomic Inventory

ElementElement SymbolSymbol AtomicAtomic

NumberNumber

Mass Mass NumberNumber

ProtonsProtons NeutronsNeutrons ElectronsElectrons

Na

Kr

Ca

Ag

11

36

20

47

23

84

40

108

11

36

20

47

12

48

20

61

11

36

20

47

Sodium

Krypton

Calcium

Silver

The End

This presentation was created for the benefit of our students by the Science Department at Howard High School of Technology

Adjustments made by Mr. Madigan and Mr. Spraggins

Please send suggestions and comments to [email protected]