Log in
Sign up for FREE
arrow_back
Library
Development of Atomic Theory
By Jennifer True
star
star
star
star
star
Share
share
Last updated over 5 years ago
10 questions
Add this activity
1
1
1
1
1
1
1
1
1
1
Question 1
1.
Question 2
2.
Question 3
3.
Question 4
4.
Question 5
5.
Question 6
6.
Question 7
7.
Question 8
8.
Question 9
9.
Question 10
10.
Describe Democritus's model of the atom
A the plum-pudding model
B a small solid sphere
C the planetary model
D the nuclear model
Click all that apply to Dalton's atomic theory
atoms are indivisible
all atoms of the same element are alike
Compounds form when atoms of different elements combine in whole number ratios
atoms contain subatomic particles
all matter is made up of atoms
The Greek philosopher Democritus was one of the first to suggest the existence of atoms.
True
False
The word "atomos" is greek for _____________
invisible
indivisible
atoms
divisible
What did J.J. Thomson discover?
A nucleus
B proton
C electron
D neutron
Check all that apply to J.J. Thomas's atomic theory
A discovered the electron
B discovered the neutron
C the plum-pudding model
D each atom was a square that was filled with positively charged fluid
electrons were represnted as "plums" while the "pudding" was positively charged
studied the behavior of cathode rays when exposed to a magnetic field
Which Scientist used the "Gold-Foil Experiment"
A Democritus
B Rutherford
C Aristotle
D Thomas
Who discovered the nucleus?
A Rutherford
B Thomas
C Democritus
D Dalton
In Rutherfords model, what is the charge of the nucleus?
no charge
positive
negative
Check all that Rutherford and his team concluded.
atoms contain electrons
there is a small core to the atom
the positive charge of an atom is found in the nucleus
atoms contain neutrons
Most of the atom is empty space, where the low mass electrons are found.