GT Chemistry

Obj: Students will be able to use chemical formulas in order to construct chemical equations.

Drill: What did you have for breakfast? Do you think chemistry was needed for any of the parts of that breakfast?

SAT Enrichment:

• 175.6 g of NH3 gas is stored at STP. The volume of the gas at those conditions is….

a. 10.32 litersb. 22.40 litersc. 175.6 litersd. 231.4 literse. 3933 liters

PHOTOSYNTHESIS

CO2 + H2O → C6H12O6 + O2

6CO2 + 6H2O → C6H12O6 + 6O2

Chemical Equations

• K(s) + H2O(l) → KOH(aq) + H2(g)

s – solidl – liquid (pure)g – gas

aq – aqueous (dissolved in H2O)

reactants productsYields/Produces

Everyday Equations

• Write the chemical equation for the following reaction of a lit sparkler– Solid magnesium reacts with gaseous

oxygen to yield magnesium oxide

Mg + O2 → MgO

Everyday Equations

The following is the reaction that takes place in the stomach of a person that takes Tums for a belly ache.HCl(aq) + CaCO3(s) → H2O(l) + CO2(g) + CaCl2(aq)

Write this using words

Aqueous hydrochloric acid reacts with calcium carbonate to yield liquid water, gaseous carbon dioxide, and aqueous calcium chloride.

Everyday Equations

• Write the equation for the reaction that takes place when lighting a gas grill– Propane (C3H8) reacts with oxygen in

the air to produce gaseous carbon dioxide and liquid water

C3H8 + O2 → CO2 + H2O

Everyday Equations

• The following is the reaction that take place when iron rustsFe(s) + O2(g) → Fe2O3(s)

Write this equation using words.

Solid iron reacts with oxygen in the air to produce iron(III)oxide

Class Work

• Writing Chemical Reactions and Deciphering Chemical Reactions.

Summary

• Did we accomplish the objective? Explain.

• What is a chemical reaction?• Identify the components

needed to write a chemical reaction.

• What type of chemical reaction do you think you ate this morning for breakfast?

Homework

• Instructional Fair Page 59– Word Equations

• Exit ticketComplete and place in the bin!