Do Now – 1 st period Can you name the following? (Hint: Use prefixes on the second element) 1)CO 2)CO 2 3)CCl 4 Carbon monoxide Carbon dioxide Carbon tetrachloride

Homework Achieve 3000 – Choose one of the following Earth From Above Another Earth "An hour for Earth" was a mistake! No activity, just an interesting read... Announcements Chapter 16 Test Next week Independent Work Packet 16.2 In your notebook: Review Pages 360 (1-8) and 368 (1-8)

Do Now 1.What is an ion? 2.What is a polyatomic ion? 3.What is the net charge of a compound?

Homework Achieve 3000 – Choose one of the following “Earth From Above” or “Another Earth” Announcements Chapter 16 Test Either Fri/Mon Due Today Packet 16.2 (late) In your notebook: Pages 360 (1-8) and 368 (1-8)

Do Now CationAnionCompound Name Al 3+ O 2- Mg 2+ O 2- K+K+ Cl - Cs + Br - Al 2 O 3 KCl CsBr Censium bromide Dialuminum trioxide MgO Magnesium oxide Potassium chloride

Do Now Can you name the following? (Hint: Use prefixes on the second element) 1)CO 2)CO 2 3)CCl 4 Carbon monoxide Carbon dioxide Carbon tetrachloride

Homework Achieve 3000 – Choose one of the following “Earth From Above” or “Another Earth” "An hour for Earth" was a mistake! No activity, just an interesting read... Announcements Chapter 16 Test Next week Independent Work Packet 16.2 Due Today Homework In your notebook: Pages 360 (1-8) and 368 (1-8)

Carbon Compounds L.O.: To determine the chemical formula of carbon compounds.

COUNTING ATOMS L.O. SWBAT identify the number of atoms for each element in a compound.

RULES FOR COUNTING ATOMS 1.SUBSCRIPTS only refer to the atom that they are to the right of. For example… H 2 S There are TWO atoms of HYDROGEN and only ONE atom of SULFUR.

LET’S PRACTICE! MgCl 2 Atoms of Magnesium: Atoms of Chlorine: 1 2 Al 2 S 3 Atoms of Aluminum: Atoms of Sulfur: 2 3

COEFFICIENTS 2.COEFFICIENTS apply to the entire compound. You MULTIPLY the coefficients and SUBSCRIPTS. 2 H 2 S ATOMS OF HYDROGEN: ATOMS OF SULFUR: 2 x 2 = 4 2 x 1 = 2 IF THERE ISN’T A SUBSCRIPT BEHIND AN ELEMENT, THERE IS ONLY ONE ATOM OF THAT ELEMENT!

PRACTICE 2H 2 SO 4 Atoms of Hydrogen: Atoms of Sulfur: Atoms of Oxygen: 4 2 3CH 3 OH Atoms of Carbon: Atoms of Hydrogen: Atoms of Oxygen: =

PARENTHESES 3. If elements or ions are inside of PARENTHESES, then the SUBSCRIPT to the right of the parentheses applies to everything inside. Ba(OH) 2 ATOMS OF BARIUM: ATOMS OF OXYGEN: ATOMS OF HYDROGEN: 1 2 2

THIS COULD BE A LITTLE TRICKY… Ca 3 (PO 4 ) 2 Atoms of Calcium: Atoms of Phosphorus: Atoms of Oxygen: 3 2 Al 2 (SO 4 ) 3 Atoms of Aluminum: Atoms of Sulfur: Atoms of Oxygen:

What about this BAD BOY??? 2Ca 3 (PO 4 ) 2 Atoms of Calcium: Atoms of Phosphorus: Atoms of Oxygen:

Flash Review: Tell your neighbor!  How many bonds can each of the following elements make? OH C Oxygen can make 2 bonds because it has 2 free valence electrons. H = 1 bond C = 4 bonds

18 Valence Electron Review O, H, C C O H

Carbon  can make 4 bonds with other elements in a compound.  an essential element to all living things.

Carbon Bonds  Carbon bonds:  Single bonds  Double bonds  Triple Bonds too! CC CC CC

Carbon Structures  3 types of structures:  Straight chains

Carbon Structures  Straight Chains  Branched Chains

Carbon Structures  Straight Chains  Branched Chains  Rings

Skill Development 1. Draw in carbon atoms. 2. Draw in hydrogen atoms. 3. Count the atoms of each element. 4. Write the chemical formula. C = 6H = 14 C 6 H 14

Guided Practice: What is the chemical formula of the compound?  Copy the Compound  Draw in carbon atoms.  Draw in hydrogen atoms.  Count the atoms of each element.  Write the chemical formula. C =H =

Pair Share – Be ready to answer.  Name three types of bonds carbon can use to bond to itself or other elements in a compound. Single bond Double bond Triple bond

Pair Share  Why are carbon compounds so important to understand? Because carbon is an essential element to all living things.

Pair Share  What is the chemical formula of the compound? C 9 H 18

Practice 1.Write the chemical formula for each carbon compound. 2.Draw the carbon compound for the chemical formula below. C 4 H 10

Summary (2-3 sentences) Why is carbon the most essential element for life?