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Mr. Brown

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Inside the Atom Atomic Model History

Elements Periodic Table

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Row 1, Col 1

This has a negative charge andis outside the nucleus of an atom.

Electron

1,2

Who was the first person tohave the idea there may be small

things making up everything?

Democritus

1,3

This element is the only metalthat is liquid at room

temperature.

Mercury

1,4

Who created the first periodictable even though it was

incorrect?

Dmitri Mendeleev

2,1

What is in the nucleus of anatom?

Protons and Neutrons

2,2

This scientist found negativelycharged particles.

J.J Thompson

2,3

The first letter in an elementsymbol is_______

Capitalized

2,4

What are groups?Do elements in groups havesimilar chemical properties?

They are vertical columns, yes

3,1

An atom is made mostly of what?

Empty Space

3,2

This scientist came up withthe idea that there was

center (nucleus) in an atom.

Rutherford

3,3

What are two elements that normally have 8 valence

electrons?

Neon, Argon, Krypton, Xenon, Radon

3,4

What are two properties of metals?

Good conductors of heat & electricity, malleable, shiny luster, most are solids, silver-gray

4,1

What are the letters that representthe shells, and how many electrons

can be in each shell?(Think Bohr Model)

K-2, L-8, M-18, N-32

4,2

Draw a Bohr model of Potassium

Teacher Check

4,3

Name 4 elements that aregases at room temperature.

Helium, Hydrogen, Chlorine, Fluorine, Oxygen, Nitrogen, Any Noble Gases

4,4

Who was the person who correctedthe first periodic table, and how

did he arrange the elements?

Moseley, Atomic Number

5,1

What does the mass numbertell about the atom?

Tells the number of protons and (neutrons) in the nucleus.

5,2

What device did Thompsonuse in his experiments to find

electrons?

Cathode Ray Tube

5,3

What element is Latin: aurum

Gold (Au)

5,4

This group of elementsreacts explosively with alkali

metals

Halogens