Unit Three Quiz One

Question 1

What are the three laws of the modern atomic theory?

Answer 1

-Law of definite proportions
-Law of conservation mass
-Law of multiple proportions

Question 2

What law states…

Mass cannot be created in a chemical reaction

Answer 2

Law of conservation mass

Question 3

What law states…

Different compounds can be created by the same elements

Answer 3

Law of multiple proportions

Question 4

What law states…

The compound carbon dioxide is 72.71%

Answer 4

Law of definite proportions

Question 5

What law states…

When silver reacts with copper (II) chloride, 57g silver before the reaction will result in 57g after the reaction.

Answer 5

Law of conservation of mass

Question 6

What law states…

Water contains a ratio of hydrogen to oxygen at 2:1, whereas hydrogen peroxide contains a ratio of hydrogen to oxygen at 1:1

Answer 6

Law of multiple proportions

Question 7

What law states…

Every sample of silver nitrate will contain one silver ion bonded to one nitrate ion.

Answer 7

Law of definite proportions

Question 8

Which of Dalton’s Laws are no longer true today and why?

Answer 8

• Atoms cannot be subdivided, created or destroyed
• Atoms of an element have identical size, mass, and other properties” atoms of different elements different in size, mass, and other properties

Question 9

Identify the person who discovered the following….

Who was the first to discover the neutron?

Rutherford
Chadwick
Dalton
Thomson
Democritus
Bohr
Schrodinger

Answer 9

Chadwick

Question 10

Identify the person who discovered the following….

Who was the first to discover the election?

Rutherford
Chadwick
Dalton
Thomson
Democritus
Bohr
Schrodinger

Answer 10

Thomson

Question 11

Identify the person who discovered the following….

Who was the first to propose that electrons are in energy levels?

Rutherford
Chadwick
Dalton
Thomson
Democritus
Bohr
Schrodinger

Answer 11

Bohr

Question 12

Identify the person who discovered the following….

Who was the first to propose that electrons are in a cloud surrounding the nucleus?

Rutherford
Chadwick
Dalton
Thomson
Democritus
Bohr
Schrodinger

Answer 12

Schrodinger

Question 13

Identify the person who discovered the following….

Who was the first to discover the plum pudding model?

Rutherford
Chadwick
Dalton
Thomson
Democritus
Bohr
Schrodinger

Answer 13

Thomson

Question 14

Identify the person who discovered the following….

Who was the first to discover the gold foil experiment

Rutherford
Chadwick
Dalton
Thomson
Democritus
Bohr
Schrodinger

Answer 14

Rutherford

Question 15

Identify the person who discovered the following….

Who discovered the billiard ball model?

Rutherford
Chadwick
Dalton
Thomson
Democritus
Bohr
Schrodinger

Answer 15

Dalton

Question 16

Identify the person who discovered the following….

Who was the first to discover the proton/ nucleus?

Rutherford
Chadwick
Dalton
Thomson
Democritus
Bohr
Schrodinger

Answer 16

Rutherford

Question 17

What did the billiard ball model state?

Answer 17

Atoms were the smallest part of matter and cannot be divided

Question 18

What did Rutherford’s model state?

Answer 18

Positive nucleus

Question 19

According to Coulmb’s Law, what is true regarding force when two charges are closer?

Answer 19

The closer the charge the greater the force

Question 20

Aside from mass, what do neutrons contribute to the atom?

Answer 20

Stability/Keep protons from repelling

Question 21

What is the common charge for…

electrons ________
protons ________
neutrons ________

Answer 21

electrons = (-1)
protons= (+1)
neutrons= (0)

Question 22

What is the common mass for the following…

electrons ________
protons ________
neutrons ________

Answer 22

electrons = (0)
protons= (1)
neutrons= (1)