Show:
Lewis Dot Diagrams
Electron Configuration
Periodic Table Trends
Radiation
Decay/ Half-lives
100
Draw the Lewis Dot Diagram for potassium.
K, showing 1 valence electron
100
Draw the Bohr Diagram for boron.
2 circles -- inner one has 2 electrons, outer has 3.
100
Which is the largest atom: calcium, fluorine, or aluminum?
Calcium
100

Radiation the emits particles 

What is ionization radiation?

100

Iodine-131 has a half life of 8 days. What fraction of the original sample would remain at the end of 24 days?

1/8

200
Draw the Lewis Dot Diagram for silicon.
Si with 4 valence electrons (top, bottom, left, right)
200
How many energy levels does an atom of tin have?
5
200
Which period has the most occupied energy levels?
Period 7
200

The most harmful ionization radiation

What is gamma radiation?

200

Half-live is the....

the time taken for the radioactivity of a specified isotope to fall to half its original value.


300

Draw the Lewis Dot Diagram for iodine

I with 7 valence electrons (top, bottom, left, right with three sets doubled up)

300

What is the name of the family an atom with electron configuration 2-8-8-2 belongs to?

Alkaline Earth Metals

300
What is the name of the family with the most valence electrons?
Noble gases
300

Stopped by a sheet of paper or skin

What is alpha radiation?

300

A medical institution requests 2 g of bismuth-214, which has a half life of 20 min. How many grams of bismuth-214 must be prepared if the shipping time is 2 h?

32g

400

Draw two Lewis Dot Diagrams to show why krypton and xenon behave in chemically similar ways.

Kr and Xe both have 8 valence electrons show in their Lewis Dot Diagram, they do not bond, they have enough electrons in last shell

400

Draw two Bohr Diagrams to show why magnesium is larger than beryllium, even though they both have the same number of valence electrons.

Two Bohr diagrams showing that magnesium has an additional energy level (2-8-2) compared to beryllium (2-2)

400
Why is lead larger than silicon?
It has three more shells/energy levels (6 compared to 3)
400
3 main uses for ionization radiation

1) Treatment

2) Diagnosis

3) Sterilization 

400

The half-life of chromium-51 is 28 days. If the sample contained 425 grams, how much chromium would remain after 56 days?

212.5g

500

Draw two examples of Lewis Dot diagrams that show why Alkali Earth Metals behave in chemically similar ways.

Lewis Dot Diagrams of 2 different elements in group 2, each showing 2 valence electrons, they will bond easily

500

The element with the largest Bohr diagram

Element 118

500
Why is chlorine smaller than sodium?
It has more positively charged protons (17 versus 11) to attract negatively charged electrons in closer.
500

This type of radiation has been know to cause skin cancer

Ultraviolet radiation

500

Carbon-14 is useful in 

radioactive dating