Warm Up 9292015 On the periodic table whats the difference between group 1 and group 17 What is the name of the group on the periodic table that is used to kill germs or microorganisms Which group on the periodic table is not reactive ID: 296652
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Slide1Slide2
DensitySlide3
Warm Up 9/29/2015
On the periodic table, what’s the difference between group 1 and group 17?
What
is the name of the group on the periodic table that is used to kill germs or microorganisms?
Which group on the periodic table is not reactive?
What is an example of an alkali metal?
Chlorine has similar properties to which other elements?
How many electron shells does period 7 have?
Group 1 are metals, group 17 are nonmetals
Group 17 , halogens
Group 18 noble gases
Potassium, sodium
Cheetah and baboon
Take out your homework…your paragraph on the element.
Fluorine, bromine, iodine
7Slide4Slide5
Project is due
October 13
th
(A) and October 14
th (B)Slide6
Conclusion:
The density of water is 1.0g/
mL.
Why do you think your calculated density was not 1.0g/
mL
?
As
volume of the liquid increased, what happened to the mass of the liquid?What do you notice about the density as you change the volume?What predictions can you make about the density of water if you use 100mL?Slide7
Density…18
Density
Formula
Unit
mass per unit of volume
Mass/Volume
M/V
g/
mL
g/cm3Slide8
Mass
Volume
L x w x h
mL
cm
3Slide9
Density identifies a substance
Density of a substance will always be the same regardless of size
The density of a substance will usually be different from other substancesSlide10Slide11
Density of Water
1.0 g/mLSlide12
Layering of liquids
the highest density will be on the bottom
Lowest density will be on topSlide13
If sprite has a mass of
4 g
and a volume of 3mL, what is its density?
If alcohol has a mass of 5g and a volume of 10mL, what is the density?Slide14
Coke vs. Diet Coke
Describe:
Explain:Slide15
Conclusion:
The density of water is 1.0g/
mL.
Why do you think your calculated density was not 1.0g/
mL
?
As
volume of the liquid increased, what happened to the mass of the liquid?What do you notice about the density as you change the volume?What predictions can you make about the density of water if you use 100mL?Slide16
Density of 3
Liquids…19Slide17
Front of page
19
Density of 3 Liquids
Purpose: To calculate the density of 3 liquids and hypothesize how the liquids will layer.
Hypothesis: If the three layers were mixed, I think the ______________ will sink and the ____________ will float.
Procedure:
Follow the procedure from the Density of Water Lab
Repeat procedure using alcohol,
glycerine and vinegarSlide18
Alcohol =
blue
Vinegar =
red
Glycerine
=
yellowSlide19Slide20
Conclusion
If you put all of the liquids in a container, color a picture of how they would be layered
. On your illustration write the average density for each liquid.
1 paragraph-
What
did you learn from this lab?
If water has a density of 1.0g/
mL , which liquids will float in water? sink in water?What could have been some errors you made in the lab?