What property did Mendeleev use to arrange his periodic table How many periods are in the periodic table and what information can you tell by an elements period Where are the groups and what information do they give you about an element ID: 528427
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Slide1
Q
2
:
What property did Mendeleev use to arrange his periodic table?
How many periods are in the periodic table and what information can you tell by an element’s period?
Where are the groups and what information do they give you about an element?
What can you know about all the elements in group 2A?
What information is contained inside the element square?Slide2
Your 2 cents wanted….Slide3
A groups
For the 8 “a’” groups, the group # is the # of valence (outershell) electronsSlide4
Modern periodic table
Four pieces of info for each elementName of elementSymbolAtomic numberAtomic massSlide5
Outline all of the Metals in BlackSlide6
Transition metals are located in groups 3-12 (AKA B groups)Slide7
Transition metals
Form a bridge between the elements on the left and those on the rightForm compounds with distinctive colorsSlide8
Color the Transition metals dark green
Become more Metallic
DON’T COLOR THE ELEMENTS
THAT ARE BLACKED OUT!
WE ONLY WANT
TO COLOR
METALS!!!Slide9
Color the inner transition (lanthanide & actinide) metals light green
Become more Metallic
DON’T COLOR THE ELEMENTS
THAT ARE BLACKED OUT!
THEY ARE NOT METALS!
WE ONLY WANT
TO COLOR
METALS!!!Slide10
Metalloids
Elements with properties that fall between those of metals and nonmetalsAll touch stairsExcept Al, it is a metal
Metalloids ability to conduct electric current varies with temp
Pure silicon and germanium good insulators at low temp good conductors at high tempSlide11
Outline all of the Metalloids in GreenSlide12
Nonmetals
Poor conductors of heat and electricityLow boiling points, so most are gases at room tempSolids at room temp are brittle
Fluorine is most reactive nonmetal
To the right of stairs
As you go from bottom to top the nonmetallic properties increaseSlide13
Outline the nonmetals!! In red
Become more
NonMetallicSlide14
Think fast!!!
What does the period # tell you?# of energy levelsWhat does the A group # tell you?# of valence electrons
How many periods on periodic table?
7
Other names for groups?
Columns, familiesSlide15
Periodic table
Why is hydrogen located on the left side with group 1-active metals……shouldn’t it be with the other gases in group 17?Hydrogen’s location is based on it’s electron configuration (Valence Electrons)…..not it’s propertiesSlide16
Valence Electrons
(aka the outer shell electrons!!) Is an electron in the highest occupied energy level of an atomKey role in chemical reactions
Elements in a group have similar properties because they have the same number of valence electrons
For the
“a” groups
, the group number tells how many valence electrons there areSlide17
Alkali metals
Group 1AOne valence/outer shell electronExtremely reactiveReactivity increases as you go down the column
Francium is the most reactive
Label on reference tableSlide18
Color the Alkali Metals RedSlide19
Alkaline Earth metals
Group 2aTwo valence e-
HARDER THAN METALS IN GROUP 1A
REACTIVIY IS SHOWN BY THE WAY EACH ELEMENT REACTS W/ WATER
Label on reference tableSlide20
\\
Color the Alkaline Earth Metals BlueSlide21
The Boron Family
Group 3a3 valence
e-
ALUMINUM IS THE MOST ABUNDANT METAL IN EARTH’S CRUST!!!Slide22
Color the Boron Family BrownSlide23
The Carbon Family
Group 4a4 valence e-
MOST OF Compounds IN YOUR BODY CONTAIN CARBON!!
Silicon is the 2
nd
most abundant element in Earth’s crust!
Label on reference tableSlide24
Color the Carbon Group PurpleSlide25
The Nitrogen Family
Group 5a5 valence e-
Nitrogen & Phosphorus are used in fertilizers
Bodies-control reaction & release energy from foodSlide26
Color the Nitrogen Group PinkSlide27
The Oxygen Family
Group 6A6 valence e-
Oxygen is most abundant element in the Earth’s crustSlide28
Color the Oxygen Group Light BlueSlide29
The halogen group
Group 7A7 valence e-
Highly reactive (fluorine is the most reactive nonmetal)
Reactivity increases from bottom to top
Label on reference tableSlide30
Color the Halogens OrangeSlide31
The noble gases
Group 8A8 valence
e- (EXCEPT He –IT ONLY HAS 2)
Colorless, odorless, &
EXTREMELY UNREACTIVE!!
“stable elementsSlide32
Color the Noble Gases YellowSlide33
Think Fast!!!
Most reactive nonmetal?FluorineMost Reactive metal?
Francium
What is special about Helium
Only 2 valence
e-
DESCRIBE THE NOBLE GASES?STABLE, UNREACTIVE, ODORLESS, COLORLESSSlide34
How does Heat Move?Slide35
Exploring Heat
Question: In what direction does heat move?
Research: What are 3 ways heat moves?
Hypothesis: I think fluids move heat by ________.Slide36
Procedure:
1. Heat water in tea pot.
Fill the large beaker ¾ full with water directly from the tap
.
3. Put
3 drops of food coloring in the
small
beaker
.Slide37
5
. Fill the small beaker with hot water to the top. Mix the food coloring in.
4. Cut a piece of plastic wrap large enough to securely cover the small beaker.
Cover the small beaker tightly with the plastic wrap and
secure it with a rubber
band.Slide38
7. Use the tongs to carefully lower the small beaker full of hot water into the large beaker.
8. Use a knife to make a slit in the plastic wrap.Slide39
9. Observe the beakers. Record your observations. Sketch what you see.Slide40
10. Conclusion: The answer to your question.
Explain what in your observations is evidence to support your conclusion.
Question: How does heat move in fluids (air and liquids)?
11. Clean up your area. Return clean dry items to the tub. Place waste in the trash cans. Put goggles neatly in the sterilizer.Slide41
Periodic Table
Scavenger Hunt