Q2: 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?

Your 2 cents wanted….

A groups For the 8 “a’” groups, the group # is the # of valence (outershell) electrons

Modern periodic table Four pieces of info for each element Name of element Symbol Atomic number Atomic mass

Outline all of the Metals in Black

Transition metals are located in groups 3-12 (AKA B groups)

Transition metals Form a bridge between the elements on the left and those on the right Form compounds with distinctive colors

Color the Transition metals dark green DON’T COLOR THE ELEMENTS THAT ARE BLACKED OUT! WE ONLY WANT TO COLOR METALS!!! Become more Metallic

Color the inner transition (lanthanide & actinide) metals light green DON’T COLOR THE ELEMENTS THAT ARE BLACKED OUT! THEY ARE NOT METALS! WE ONLY WANT TO COLOR METALS!!! Become more Metallic

Metalloids Elements with properties that fall between those of metals and nonmetals All touch stairs Except 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 temp

Outline all of the Metalloids in Green

Nonmetals Poor conductors of heat and electricity Low boiling points, so most are gases at room temp Solids 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 increase

Outline the nonmetals!! In red Become more NonMetallic

Think fast!!! What does the period # tell you? # of energy levels What does the A group # tell you? # of valence electrons How many periods on periodic table? 7 Other names for groups? Columns, families

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 properties

Valence Electrons (aka the outer shell electrons!!) Is an electron in the highest occupied energy level of an atom Key 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 are

Alkali metals Group 1A One valence/outer shell electron Extremely reactive Reactivity increases as you go down the column Francium is the most reactive Label on reference table

Color the Alkali Metals Red

Alkaline Earth metals Group 2a Two valence e- HARDER THAN METALS IN GROUP 1A REACTIVIY IS SHOWN BY THE WAY EACH ELEMENT REACTS W/ WATER Label on reference table

Color the Alkaline Earth Metals Blue \\

The Boron Family Group 3a 3 valence e- ALUMINUM IS THE MOST ABUNDANT METAL IN EARTH’S CRUST!!!

Color the Boron Family Brown

The Carbon Family Group 4a 4 valence e- MOST OF Compounds IN YOUR BODY CONTAIN CARBON!! Silicon is the 2nd most abundant element in Earth’s crust! Label on reference table

Color the Carbon Group Purple

The Nitrogen Family Group 5a 5 valence e- Nitrogen & Phosphorus are used in fertilizers Bodies-control reaction & release energy from food

Color the Nitrogen Group Pink

The Oxygen Family Group 6A 6 valence e- Oxygen is most abundant element in the Earth’s crust

Color the Oxygen Group Light Blue

The halogen group Group 7A 7 valence e- Label on reference table Group 7A 7 valence e- Highly reactive (fluorine is the most reactive nonmetal) Reactivity increases from bottom to top

Color the Halogens Orange

The noble gases Group 8A 8 valence e- (EXCEPT He –IT ONLY HAS 2) Colorless, odorless, & EXTREMELY UNREACTIVE!! “stable elements

Color the Noble Gases Yellow

Think Fast!!! Most reactive nonmetal? Most Reactive metal? Fluorine Most Reactive metal? Francium What is special about Helium Only 2 valence e- DESCRIBE THE NOBLE GASES? STABLE, UNREACTIVE, ODORLESS, COLORLESS

How does Heat Move?

Exploring Heat Question: In what direction does heat move? Research: What are 3 ways heat moves? Hypothesis: I think fluids move heat by ________.

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.

4. Cut a piece of plastic wrap large enough to 4. Cut a piece of plastic wrap large enough to securely cover the small beaker. 5. Fill the small beaker with hot water to the top. Mix the food coloring in. Cover the small beaker tightly with the plastic wrap and secure it with a rubber band.

7. Use the tongs to carefully lower the small 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.

9. Observe the beakers. Record your observations. Sketch what you see.

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.

Periodic Table Scavenger Hunt