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States of matter
Periods vs Groups
Bohr model
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100

What are the 3 states of matter? 

Solid, liquid, gas

100

Periods go...

Groups go...

Periods go side to side 

Groups go up and down 

100

The first shell of the Bohr Model can hold how many electrons? 

2 electrons 

100

Dry ice is a ______ but when placed in water turns into a ______. 

Dry ice is a solid but when placed in water turns into a gas. 

200

What does Indefinite mean? 

Not fixed and can change.

200
How many groups and periods are there? 

8 groups 

7 periods 

200

The 2nd and 3rd shell of the Bohr model can hold how many electrons? 

8 electrons each 

200

If I wanted to know how many electrons and element has, I must look at the ....

Atomic number 

300

What does Definite mean? 

Fixed and does not change.

300

Periods tell us...

The number of energy levels/rings around an element. 

300

On the 2nd, 3rd & 4th shell of the Bohr model, there is an order we must add our electrons. What is the correct order that we add electrons on these shells?  

12 oclock, 3 o’clock, 6 o’clock, 9 o’clock then repeat.
300

How many electrons can fit on the 4th shell in the Bohr model?

16 electrons 

400

Describe the particle arrangement of a solid, liquid & gas.

Solids- tightly packed with no room to move

Liquids- close together but still have some room to move 

Gases- freely apart (6 ft like corona virus)

400

Groups tell us...

The number of valence electrons on the outer shell.

400

Th middle of the Bohr model is represented by drawing the symbol of the element. What is the correct term for describing the middle of a Bohr Model? 

Nucleus 

400

How many rings would an element need of the element had 31 electrons 

4 rings 

-1st ring can hold 2 electrons 

-2nd ring can hold 8 electrons 

-3rd ring can hold 8 electrons

-4th ring can hold 16 electrons 

For a total of 34 electrons 

500

Describe the shape and volume of a solid, liquid and gas.

Solid- definite shape & definite volume 

Liquid- indefinite shape & definite volume

Gas- indefinite shape & indefinite volume 

500

What is the difference better enough electrons and valence electrons?

Valence electrons are the electrons on the outer shell of the Bohr model. 

500

An element has 5 rings around it & 7 valence electrons on the outer shell. What does this information mean? 

That the element is in period 5 and group 7

500

On Wednesday, we watched The Magic School Bus. What was it about? 

The digestion system.