States of matter
What are the 3 states of matter?
Solid, liquid, gas
Periods go...
Groups go...
Periods go side to side
Groups go up and down
The first shell of the Bohr Model can hold how many electrons?
2 electrons
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.
What does Indefinite mean?
Not fixed and can change.
8 groups
7 periods
The 2nd and 3rd shell of the Bohr model can hold how many electrons?
8 electrons each
If I wanted to know how many electrons and element has, I must look at the ....
Atomic number
What does Definite mean?
Fixed and does not change.
Periods tell us...
The number of energy levels/rings around an element.
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?
How many electrons can fit on the 4th shell in the Bohr model?
16 electrons
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)
Groups tell us...
The number of valence electrons on the outer shell.
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
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
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
What is the difference better enough electrons and valence electrons?
Valence electrons are the electrons on the outer shell of the Bohr model.
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
On Wednesday, we watched The Magic School Bus. What was it about?
The digestion system.