Name __________________________________ Magic Square     Atomic Structure and Theory

 

Directions:  Put the number of the definition from the list below into the square with the appropriate term.  Check your answers by adding the numbers to see if all the sums of all rows, both across and down add up to the same number, the Magic #.

 

Democritus

 

_____

 

Dalton

 

_____

Thomson

 

_____

Chadwick

 

______

Total

 

_____

Rutherford

 

_____

 

Proton

 

_____

Atom

 

_____

Bohr

 

_____

 

 

_____

Wave Model

 

_____

 

Neutron

 

_____

Nucleus

 

_____

Alpha particle

 

_____

 

 

_____

Electron

 

_____

 

Model

 

______

Energy levels

 

_____

Electron cloud

 

_____

 

 

_____

 

Total   _____

 

_____

 

_____

 

______

 

 

                                                                                                                        Magic Number ______

 

1.      Represented by a symbol; all are found on the Periodic Table

2.      Made a mental model of the atom; Greek philosopher

3.      Used by Rutherford in his experiment; made of two protons and two neutrons

4.      The paths in which electrons circle the nucleus according to the Bohr model

5.      The positive particle in the nucleus of an atom

6.      The tiny positive core of an atom; contains protons and neutrons

7.      Formed the atomic theory model of the atom; English schoolteacher

8.      Discovered the nucleus using his gold foil experiment

9.      Current explanation of where electrons might be found in the atom

10.  Used by scientists to explain something we can not see or understand

11.  The smallest particle of an element that has the properties of that element

12.  Discovered the neutron

13.  Current model of the atom; proposed by Schrodinger

14.  Mass of protons and neutrons

15.  Developed the model of the atom in which electrons orbit the nucleus in energy levels

16.  The negative particle that circles the nucleus

17.  The neutral particle in the nucleus of an atom

18.  Proposed the “plum-pudding” model of the atom; discovered the electron

 

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