Ch 9B Test today; Start Ch 10 Stoichiometry on Monday

Reviewed for Ch 9B Test tomorrow

Solutions to 9B Empirical Practice WS

Solutions to some of Review Practice Problems

Worked on MgO Lab calculations today and more Empirical Formula Problems

Magnesium oxide Lab today

Lab Prep for MgO Lab tomorrow; Notes on Calculating Empirical Formulas

Notes on Mass% of Elements in a Compound; Practice WS for Homework - due Mon 1/27

 Help on Practice Worksheet

Started Ch 9B with reviewing The Mole; Ch 9 Study Guide - classwork/homework

Played Review Game for Ch 8 Test tomorrow 1/22

Finished Ch 8 Lab today; Review on Tuesday; Ch 8 Test on Wed 1/23

Went over FUNsheet answers; Worked on more balancing equations from Notes; Ch 8 Lab tomorrow :-)

Notes on 5 Different Chemical Reaction Types; Finish FUNsheet for Homework

Mental Health Awareness Presentation today

Went over Homework; Silver Tarnish and Methane Bubbles Demo; Homework finish FUNsheet (naming #1-15 and balancing #1-21)

Went over Ch 8.1 Notes; Started Ch 10 FUNsheet #1-10 due tomorrow Thurs 1/9

Happy New Year! Ch 8 Notes WS due tomorrow Wed 1/8

NAME___________________________________PERIOD_____

CHEMISTRY- CH 8.1 WORKSHEET – CHEMICAL REACTIONS

1. Define a chemical reaction.

2. A chemical reaction is another name for________________.

3. List four indications of a chemical reaction.

1.

            2.

            3.

            4.

4. Explain how the pictures a, b, c,  in Fig 2 on pg 270 represent chemical reactions.

a.

b.

c.

      4.   Define reactant.

5. Define product.

6. On the back of this sheet list and describe the 7 symbols in Table 9-1 pg 271.
7. What is a word equation? Give an example.

8. What is a skeleton equation?  Give an example.

9. When you balance chemical equations a coefficient is put in front of products and reactants until the number of atoms of an element on the left of a chemical equation equals the number of atoms of the element on the right. This strategy for balancing chemical equations obeys the Law of Conservation of Mass. Coefficients are whole numbers and are usually not written if the value is 1. The coefficients describe the smallest whole-number ratio of reactants and products.

*****List and BRIEFLY describe the 6 steps to balancing a chemical equation on the back of this sheet. (pg 274)

10. Do Practice Problems 1-3 pg 272 and 4-6 pg 275 on the back of this sheet.