Wednesday, March 19, 2014

EW: What are 3 indications that a chemical reaction has taken place?

Today: Chemical Reactions Notes Alkaline Earth Metals Lab

Describing

Chemical

Reactions

13.1 Chemical formulas A molecule’s chemical formula tells you the

ratio of atoms of each element in the compound.

A chemical reaction is the process of breaking of chemical bonds (ionic or covalent) in one or more substances, and the reforming of new bonds to create new substances

indicators of chemical change are:1. formation of new gas2. formation of new precipitate (solid)3. release of energy (heat or light)4. color change

Alkaline Earth Metals Lab

Thursday, March 20, 2014

LT: I can demonstrate how chemical reactions rearrange atoms in molecules.

EW: How many elements in CO2? How many atoms?

Today: Alkaline Earth Metals Conclusion Carbon Compound Notes

Thursday, March 20, 2014

LT: I can demonstrate how chemical reactions rearrange atoms in molecules.

Cool Friday Thing Today:

Turn in Alkaline Earth Metals Conclusion Turn in Covalent Bonding Worksheet Carbon Compound Notes

Friday, March 21, 2014 LT: I can demonstrate how chemical reactions

rearrange atoms in molecules. Cool Friday Thing! What animal would you like

to be friends with? Today:

Ch. 13 Quiz Finish Carbon Compound Notes

13.3 The chemistry of carbon Because carbon has 4 valence electrons it can form

4 covalent bonds allowing it to make large molecules.

Carbon molecules come in three basic forms: straight chains, branching chains, and rings.

All three forms are found in important biological molecules.

13.3 Organic compounds Scientists classify the organic molecules in living

things into four basic groups: carbohydrates, proteins, fats, and nucleic acids.

All groups, except fats, form molecules called polymers (large molecules

composed of repeating units, called monomers, like beads in a necklace)

13.3 Carbohydrates Carbohydrates

energy-rich compounds made of carbon,

hydrogen, and oxygen classified as sugars or

starches Glucose is a single sugar

(monomer) Starch is a long chain of

sugars (polymer) Cellulose is in plant

material (wood) (polymer)

Monday, March 24, 2014 LT: I can demonstrate how chemical reactions

rearrange atoms in molecules.

EW: Name one carbohydrate you have eaten today.

Today: Finish Carbon Compound Notes Go over Covalent Bonding Wksht

13.3 Lipids

Lipids Like carbohydrates,

energy-rich compounds made from carbon,

hydrogen, and oxygen include fats, oils, and

waxes.

13.3 Proteins Proteins

basic molecular building blocks of cells and all parts of animals

among the largest organic molecules (polymers) Ex. Enzymes, hemoglobin, keratin (hair, skin, nails)

13.3 Nucleic Acids Instructions for cellular

reactions Ex. DNA & RNA (polymers)

5-carbon sugars Nitrogen containing base phosphate groups

Tuesday, March 25, 2014 LT: I can demonstrate how chemical reactions

rearrange atoms in molecules.

EW: Name the 4 types of organic carbon compounds and give an example of each one.

Today: Chemical Reaction Notes & Reading

Chemical Reactions energy is stored in ionic and covalent bonds

exothermic reaction– energy is released (burning)

endothermic reaction– energy is absorbed (cold packs)

Conservation of mass matter cannot be created nor destroyed in

chemical reactions

chemical equations convey as much info. as possible about what happens in a chemical reaction during a chemical change

some important chemical reactions burning of fossil fuels

photosynthesis

rusting of metals

Balancing Chemical Equations each side of the equation must have the same

number of atoms of each elements bicycle example

skeletal equation frame + wheel + handlebar + pedal → bike

balanced equation frame + 2 wheels + handlebar + 2 pedals → bicycle

tricycle example skeletal equation

frame + wheel + handlebar + pedal → bike balanced equation

frame + 3 wheels + handlebar + 2 pedals → tricycle

NOT BALANCED!

BALANCED!

Wednesday, March 26, 2014

LT: I can demonstrate how chemical reactions rearrange atoms in molecules.

EW: 1. A __________ tells me how many atoms of

each element are in a compound. 2. A __________ tells me how many

molecules of each compound are needed to balance the chemical reaction equation.

Today: Chemical Reaction Reading & Simulation

this is NOT balanced

How about these? ?KCl + ? H2SO4 ? HCl + ? K2SO4

2KCl + H2SO4 2HCl + K2SO4

NaCl (aq) + AgNO3 (aq) AgCl (s) + NaNO3 (aq) balanced

Al(s) + O2(g) Al2O3(s) 4Al(s) + 3O2(g) 2Al2O3(s)

Rearranging Atoms in Chemical Reactions

Read the text. When finished come get a packet of materials for you and a partner.

Look at the card with the 3 chemical reactions. For the 1st chemical reaction, use the “atom” cards and arrange

the reactants on the left. CHEMICAL REACTION! Place the arrow in the middle after the

reactants. Rearrange the “atom” cards to make the products. Repeat for the other 2 chemical reactions. Was law of conservation of mass maintained? How do you know? Answer the question above and all 4 questions on the last page of

the reading on your own paper.

Thursday, March 27, 2014

LT: EW: Today:

Rate of Chemical Reactions Lab

Wednesday, March 26, 2014

LT: Today:

Rate of Reaction Conclusion Concluding Statement – did the levels of the

independent variable create a trend in the data? Support your conclusion with data – cite low and high

values, talk about trend or no trend What does data tell you? Therefore statement – I learned Potential errors in lab, how you could improve lab, etc.

Ch. 14 V & C Work time