# Honors Chemistry FALL 2020 WEEK OF SEPTEMBER 21st

• Honors Chemistry

Monday

Objectives: Calculate density, mass, and volume and represent answers using the appropriate number of significant figures.

1.  Question of the Day: (10-15 min)

1.  Complete the following calculations and place your answer in scientific notation.

a) (4.60 x 10-2)(2.50 x 104)

b) (9.2 x 107) / (3.0 x 10-3)

c) (7.84 x 106)(5.09 x 10-4)

(3.22 x 105)

2. Complete the following calculations showing all work.  Remember to round using significant figures in your answers and circle the answers. (slide 8)

a) Calculate the density of an object if the volume is 8.42 ml and it has a mass of 21.57 g.

b) Calculate the mass of an object if the volume is 45.5 ml and it has a density of 1.80 g/ml.

c) Calculate the volume of an object if the mass is 4.46 g and it has a density of 19.3 g/cm3.

* OPTIONAL if you need more practice DENSITY PROBLEMS.  Read p. 54-59. Answer 2.77 a,c,d, 2.81 b,  and 2.85 then check your answers on p. 68.

3.  Density Equation Quiz (~20 minutes)

4.  Video Tutorial Dimensional Analysis Notes pp. 5-6 in "Chapter 2- Chemistry and Measurements" Note Packet.  (15 minutes)

HW- Complete all work not completed during class.

Tuesday

LOG ON ZOOM 7:30am FOR SMALL GROUP HELP.  SCIENTIFIC NOTATION, SIGNIFICANT FIGURES, AND DENSITY

Objectives:  Utilized dimensional analysis (factor-label method) to convert between units of measurement.  Round calculated answers to the correct number of significant figures.

Activities:

1.  Question of the Day

Using dimensional analysis solve the following using the correct number of significant figures and by placing answers in scientific notation. Remember to set up your conversion factors to cancel the units. (Slide 35)

a)          (2.14 x 103)(5.00 x 10-2)

(3.0 x 107)

b). 2.790 x 1011seconds =  _____years

c) 7.3201 x 10-12miles = ______cm

2.  Guided practice "Dimensional Analysis Practice Problems" worksheet on Canvas work in notebook.

3.  Independent practice "Dimensional Analysis Practice Problems" worksheet on Canvas work in notebook.

HW- Work 20-30 minutes on Dimensional Analysis Practice Problems.

Wednesday

Objectives:  Utilized dimensional analysis (factor-label method) to convert between units of measurement.  Round calculated answers to the correct number of significant figures.

1. Question of the Day about Career Want Ad Gallery (Shared Drive)

2.  To answer any questions....Guided practice "Dimensional Analysis Practice Problems" worksheet on Canvas work in notebook.

3.  Independent practice complete ALL "Dimensional Analysis Practice Problems" worksheet on Canvas work in notebook.

4.  Dimensional Analysis Quiz on Canvas.

5.  Review:

p. 4 #1.5 - chemicals

p. 6 #1.11, p. 24 #1.43 - scientific method

p. 25 #1.53 & 1.55 - scientific notation both ways

p.31 #2.7 - name and types of measurements

p.34 #2.9 - estimated digits

p.35 #2.17 & 2.21 - significant figures

p. 39 #2.31 & 2.33 - calculations with sig figs

p. 43 #2.45 metric conversions

p. 48 #2.57 - equalities, conversion factors, and sig figs

p. 53 #2.61, 2.65, 2.67, & 2.69 - dimensional analysis

p. 59 #2.77 b, 2.81 a & c - density calculations with dimensional analysis.

Extra Credit due Friday

10 mg of Atarax per 5 mL of Atarax syrup

Atarax is prescribed for anxiety and tension due to stress.   A person misread a prescription and accidentally takes 50.0 mL of Atarax syrup in a day.  The dosage per day is 50.0 mg.

1.  Determine the amount of Atarax in milligrams taken.

2.  The child weighs 119 lbs.  The LD50 = 840. mg/kg Atarax.  What would be the lethal dose for a person of this weight? (1kg= 2.2lbs)

HW- Complete all work not completed in class.

Thursday

Objectives: Assess Scientific method, Branches of Chemistry, Scientific Notation, Calculations with Scientific Notation, Density Calculations, Graphing, Units of Measurement, Metric Conversions, Significant Figures, Conversion Factors, and Dimensional Analysis (Problem Solving Using Unit Conversions).

1.  Questions of the Day: Review

Convert the following:

1)  6.22 km = ____________m

2)  560 L = ____________cL

3)  0.982 g = _____________mg

4)  32100 mg = _____________g

5)  0.00045 mg  =    ____________kg

Convert the following to scientific notation, use appropriate significant figures:

6)    34,000 g

7) 0.00034mL

Complete the following calculation to determine thickness of a piece of aluminum.  Write your answer using the correct number of significant figures:

8)             4.9 x 10 -3 cm3

3.2 x 10 -2 cm2

9)  p. 48 #2.59

2.  Chemistry and Measurement Test (20% Category)

Friday

Objectives: Classify examples of matter as pure substances or mixtures.

Activities:

1.  Daily Topic Question

2.  If necessary retake the Chemistry and Measurement Test.

Begin Matter and Energy Unit:

3.  Complete Types of Matter Video Tutorial and Questions (Canvas).

4.  Complete the Classifying Matter Concept Map (Canvas).

5.  Read p. 70-73 Take notes, include all bold words. Answer 3.1, 3.2, and 3.5 p.73 in notebook

HW- Complete all work not completed in class.