Challney yr 9 model of the Atom PBD
Authored by Mrs Brooks-Dickens
Science
9th Grade
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What did Rutherford's discovery of the nuclear atom imply about the understanding of atomic structure?
Atoms are solid and impenetrable
Atoms have a small, positively-charged nucleus surrounded by empty space
Atoms are made up of negative charges
Atoms have a small, negatively-charged nucleus surrounded by empty space
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What were the four elements believed to make up matter in ancient Greece?
earth, wind, fire, water
earth, air, water, metal
earth, air, fire, wind
earth, air, fire, water
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What did J J Thomson's plum pudding model propose?
atoms consist of two types of static electricity
atoms are solid throughout
atoms are made up of positive dough and negative electrons
atoms can be squashed
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why was it significant to use a vacuum in the experiment?
To increase the speed of alpha particles
To reduce the thickness of gold foil
To prevent deflections of alpha particles
To create a controlled environment
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What did Rutherford conclude based on the observation that a small number of alpha particles were deflected at large angles?
There is an equal distribution of positive and negative charges in the atom
There is a concentration of negative charge in the atom
There is a concentration of positive charge in the atom
There is no charge present in the atom
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was the purpose of the experiment conducted by Ernest Rutherford?
To measure the thickness of gold foil
To study the behavior of alpha particles
To test the plum pudding model
To observe the effects of vacuum
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of the observation that most alpha particles went straight through the foil?
It suggests that the atom is made up of negative charges
It suggests that the atom is made up of positive charges
It suggests that the atom is mostly empty space
It suggests that the atom is solid and impenetrable
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