7 PTA Q1

Question 1

What does Red Martians Invade ROYGBIV Using X-ray Gizmos stand for?

Answer 1

The EM Spectrum. Radio, Microwaves, Infrared, Visible, UV, X-ray, Gamma

Question 2

JJ Thompson

Answer 2

Cathode ray determined mass / charge ratio, “Plum Pudding”, e- very lightweight

Question 3

Rutherford

Answer 3

gold particle foil showed dense + nucleus, atom mostly empty space, nuclear model

Question 4

Bohr

Answer 4

Bohr/planetary model, quantized energy level

Question 5

Milikin

Answer 5

“oil drop” showed the charge and mass of e-

Question 6

Mendeleev

Answer 6

arranged periodic table acc. to atomic mass. Predicted gaps.

Question 7

Mosely

Answer 7

arranged periodic table acc. to atomic number

Question 8

Does a theory become a law

Answer 8

No

Question 9

John Dalton

Answer 9

atoms are indivisible - F Proposed all atoms of the same element are identical - False.
atoms of different elements are different - T
atoms of different elements can combine with each other only in simple whole-number ratios to form compounds - T
Billiard Ball Model

Question 10

isotopes

Answer 10

differ in the number of neutrons

Question 11

speed constant

Answer 11

c = 3.0 x 10^8 m/s or 3.0 x 10^17 nm/sec

Question 12

Visible light goes from

Answer 12

700 nm to 400 nm

Question 13

wavelength and frequency are

Answer 13

inverse

Question 14

Seaborg

Answer 14

Moved lanthanide and actinide series from body of periodic table