Review Qs Ch3.Ch.4 BOOK.notebook
October 05, 2016
Ch.3 Review p. 86
5) Rutherford's model
­­"nuclear" model...tiny, dense center of + charge
­­aimed + alpha particles at gold foil
6) Atomic number identifies atoms
7a) Isotopes = atoms of same element (same # protons), but different # neutrons
­­should have passed through
7b) Same # p+ and e­
­­occasionally the + particles bounced off foil
when they hit the + nucleus
7c) Different mass #
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Review Qs Ch3.Ch.4 BOOK.notebook
October 05, 2016
Ch 4 p. 119
8)
#p+
#e­
#no
1a) Radiowaves, microwaves, infrared, visible light, UV light, X­rays, gamma rays
Si­28
14
14
14
1b) 3 x 108 m/s
Si­29
14
14
15
4) (low frequency)
Si­30
14
14
16
(high frequency)
R O Y G B I V
Ch 4. p. 121
42a) Longer wavelength: G or Y
b) Higher frequency: X ray or microwave
c) Travels at greater speed:
UV light or IR light
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