Atomic Theory

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Slide 22

Which of the following is a compound?

oxygen

water

nitrogen

air

Slide 23

Evidence of a chemical change would be a

melting popsicle.

spinning top.

spilled bucket of water.

rusting car fender.

Slide 24

Which symbol represents carbon?

Ca

N

K

C

Slide 25

Moisture that collects on the outside of a cold glass results from the process of

evaporation.

condensation.

sublimation.

vaporization.

Slide 26

Slide 27

Particles

Matter

P+1

P-1

Example:

Proton anti-Proton

anti-Matter

Slide 28

Matter

Quarks Leptons

Up electron

Down

-1

3

2

3

e-1

Slide 29

Tevatron - world's highest-energy particle accelerator. Four miles in circumference

Particles go around at 99.9999% of the speed of light.

Slide 30

Slide 31

Particle accelerator

Slide 32

Slide 33

Proton

Made of

3 Quarks

1 up

2 down

u

d

d

Slide 34

Neutron

Made of

3 Quarks

2 up

1 down

d

u

u

Slide 35

Can we see atoms?

Yes

magnesium atoms (white) above boron atoms (grey) seen by the transmission electron microscope

Slide 36

Photon a particle of light.

Electromagnetic radiation

ALL light. Visible AND invisible visible light , x-rays, gamma rays, radio waves, microwaves, ultraviolet rays, infrared.

Slide 37

Photon a particle of light

Laser

Slide 38

Electromagnetic radiation