9/29/11 I -STARTER: Warm up Tape in Your Warm up and Complet e Justify Your Answer Choice:

9/29/11I -STARTER: Warm upTape in

Your Warm up and Comple

te

Justify Your

Answer Choice:

9/29/11

Tape in Your

Warm up and Comple

te

Justify Your

Answer Choice:

I -STARTER: Warm up

II- PRACTICE: We will begin looking at and discussing different elements.

Your notes from the discussion will go here to help you prepare for future activities and discussions about elements.

IT’S ALL ELEMENTALElements are all around us … can you recognize them when you see

them?

What is an element?

An element is a pure substance that cannot be broken down by chemical means into other substances.

A compound contains two or more elements

. Everything is made up of elements.

What element is this?

Copper –Cu

Used in: wiring heat sinks Coins brass and bronze

alloys (metal mixtures).

But is it really Copper? Lincoln Memorial penny

dated before 1982 - made of 95% copper.

dated after 1983 - made of 97.5% zinc and plated with a thin copper coating.

What element is this?

Nickel –Ni

classified as an element in 1751.

The Nickel (five-cent) coin – made of 75% copper. Only 25% is nickel, It

actually has more copper than the penny!

What element is in this picture?

Helium –He

Colorless gas glows pale peach

when an electric current runs through it

Used to make balloons float

What element is this?

Aluminum –Al

Malleable shaped into

interesting,beautifuland usefulobjects, like soda cans.

What element is this?

Carbon – C

A diamond, but heat it too much and it burns up into carbon dioxide gas.

Graphite used in pencils

Coal

What element is this?

Calcium –Ca

most people think of chalk and bones

Actually…a silvery metal that reacts with water to give off hydrogen gas

What element is shown here?

Iron –Fe Meteorite (from

ancient Mexico - made mostly of iron.

Locals created tools from

first samples made their way out to the world in the 1700s

What element is this?

Iodine –I

gives off violet vapor when heated

used as disinfectants for cuts and wounds before antiseptic agents were found.

What element is this?

Lead –Pb

Usually seen as Lead pipes

Elements Are All Around Us

All of these elements are found within the Earth, atmosphere, oceans and even in your all living things.

Silicon –Si

computer chips

Nitrogen –N

78% of the atmosphere

Hydrogen –H

75% universe is hydrogen, a colorless gas.

The Sun is composed of Hydrogen & Helium

Chlorine –Cl

purifies drinking water and swimming pools.

Combined with sodium, makes table salt

Silver (Ag) and Gold (Au)

Phosphorous –P

Used in matches

Sulfur –S

Has a very distinguishable smell

Sodium –Na exposed to water -

explode in flaming balls of molten sodium.

Mix with Chlorine -creates table salt.

It’s Oxygen –O

Colorless gas Blue liquid

9/29/11

Tape in Your

Warm up and Comple

te

Justify Your

Answer Choice:

I -STARTER: Warm up

II- PRACTICE: We will begin looking at and discussing different elements.

Your notes from the discussion will go here to help you prepare for future activities and discussions about elements.

III- APPLICATIONExplain how the physical properties of an element determine how we use that element

9/29/11

Tape in Your

Warm up and Comple

te

Justify Your

Answer Choice:

I -STARTER: Warm up

II- PRACTICE: We will begin looking at and discussing different elements.

Your notes from the discussion will go here to help you prepare for future activities and discussions about elements.

III- APPLICATIONExplain how the physical properties of an element determine how we use that element

IV –CONNECTIONS:Knowing what you have learned about metals, nonmetals, and elements explain:•Why do jewelers use metals instead of nonmetals to make jewelry?

9/29/11

Tape in Your

Warm up and Comple

te

Justify Your

Answer Choice:

I -STARTER: Warm up

II- PRACTICE: We will begin looking at and discussing different elements.

Your notes from the discussion will go here to help you prepare for future activities and discussions about elements.

III- APPLICATIONExplain how the physical properties of an element determine how we use that element

IV –CONNECTIONS:Knowing what you have learned about metals, nonmetals, and elements explain:•Why do jewelers use metals instead of nonmetals to make jewelry?

V -EXIT: Writing 3-4 sentences summarizing what we have learned so far about elements