Click on link below for additional SR  practice and answers

SRWSandKey

Chapter 9 Test: Chemical Reactions

1. Define all vocabulary from chapter 9
2. Identify types of reactions based on definition and chemical equations
3. Compare skeletal and chemical equations
4. Balance chemical equations
5. Write complete and net ionic equations
6. Determine state of matter based on solubility rules
7. Determine if a reaction occurs based on reactivities and solubility rules
8. Predict products of single replacement, double replacement, and combustion reactions

Click link below to see answers:

DRPractice

Click link to see video

Reactions with the Flintstones

Click on link below to see solutions to C.1 and C.2 Supplement Balancing Problems

C.1_C.2 Supplement Balancing

Click on links to see solutions to naming practice problems.

IonicCovalentNaming

IonicCovalentNamingMixed

Hair and Fibers Quiz

• Breakdown:25 pts: 9 pts MC (vocab), 6 pts T/F, 10 pts case studies (5 pts “hair as a timeline”, 5 pts Neutron Activation Analysis)
• Items to review: Notes from chapters 3 (hair) + 4 (fiber), Bookwork from chapters 3 + 4 (pg 62 #1-5, 8, 10-12, 15), Hair as a Timeline, Neutron Activation Analysis Activity
• Relevant Vocabulary: keratin, melanin, root, cuticle, cortex, medulla, follicle, imbricate (cuticle pattern), fiber, natural fiber, synthetic fiber, cross transfer

• Answers to “Hair and Fiber Evidence”:

1. Keratin, nails, follicle, fetal

2. pigments (melanin), shape, texture, genes, nutritional, alteration

3. root

4. medulla in the center, cuticle on the outside, cortex in between

5. scales, thickness, pigment

6. thickness, color

7. opacity, continuity

8. species, individuals

9. pencil, lead, wood, coating

13. fiber, length, diameter, yarn

14. type, spinning, fabric

15. unique, common

16. cross-transfers, increases

17. natural

18. cotton

19. wool

20. man-made

21. synthetic

pg 275 #117-123

117. (use electronegativity values found in textbook, found on pg 194)          a) C-O  b) C-F   c) P-Cl

118. a) C  b)N  c) S d) O

119. b) Si-O

120. In order of increasing polarity: c, a, b, e, d

121. equal distribution of charge because of symmetry

122.  a) Polar, asymmetrical   b) nonpolar, symmetrical  c)polar, asymmetrical  d)nonpolar, symmetrical

123. sulfur difluoride and sulfur tetrafluoride are polar. Sulfur hexafluoride is nonpolar (draw Lewis, check for symmetry, check for polarity)

Test Objectives

1. Define and compare ALL vocabulary for chapter 8
2. Draw Lewis structures for covalent molecules AND ionic compounds
3. Assign formal charge to individual atoms and entire molecules when drawing Lewis structures
4. Identify VSEPR geometries and bond angles for a Lewis structure
5. Assign bond polarity AND molecule polarity  by analyzing electronegativities and symmetry within a molecule
6. Name ionic and covalent compounds
7. Compare properties of ionic and covalent compounds
8. Compare electronegativities to determine the “nature” (polar covalent, non-polar covalent, ionic) of a bond

Test Date: Wednesday 3/18

See attached document below:

StudentGeneratedChemistryMidtermStudyGuide1-13(2)