Atomic History

YOU CAN DOWNLOAD 200+ SUBJECTS PDF BOOK FOR COMPETITIVE EXAMINATIONS

CLICK HERE TO DOWNLOAD

Atomic History

Question 21 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What were Ernest Rutherford's three contributions to atomic theory?
A
Discovered that the atom is mostly empty space
B
correctchoice Discovered the nucleus- did the gold foil experiment
C
Used the cathode ray tube in his discovery
D
correctchoice Discovered that the proton had a positive charge
Question 22 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Who was the first contributor to the atomic theory?
A
John Dalton
B
Ernest Rutherford
C
JJ Thompson
D
Democritus
Question 23 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which scientist was the the most recent contributor to the atomic theory?
A
John Dalton
B
Ernest Rutherford
C
JJ Thomson
D
Neils Bohr
Question 24 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is Neils Bohr's contribution to the atomic theory?
A
Created the atomic theory
B
Created a model of the atom with electrons moving around the nucleus in a fixed orbits
C
Discovered that the proton had a positive charge
D
Believed that atoms of a given element are identical
Question 25 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Democritus believed that the smallest particles, were atomos, the Greek word for
A
small
B
uncut or indivisible
C
basic
There are 25 questions to complete.