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Density

Ms. Smith Mrs. Malone Ms. Cedillo. Density. October 21, 2013. DO NOW : Date : October 21, 2013 TEKS: 6.8B calculate density to identify an unknown substance Pick up a new Gold Do Now sheet Pre-AP – Turn in Density? Diddy Did It. Put your CB on your desk

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Density

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  1. Ms. Smith Mrs. Malone Ms. Cedillo Density October 21, 2013 • DO NOW: • Date: October 21, 2013 • TEKS: • 6.8B calculate density to identify an unknown substance • Pick up a new Gold Do Now sheet • Pre-AP – Turn in Density? Diddy Did It. • Put your CB on your desk • Copy down this week’s TEKS • Read the Do Now Reading • 5. Q?: Who was the person who named Oxygen? • Why is Oxygen such an important element?

  2. ANNOUNCEMENTS! • Homework: Calculating Density Practice – due Friday • Tutorials: Monday (Today!) after school • Science Olympiad Club: Meets Today after school • Friday Quiz: Be able to calculate density to identify an unknown

  3. Grade Level Agenda • Start working on Density? Diddy Did It. Show all work and include units. • Example: D=m/v D= 10.0g/5.0mL D=2.0g/mL • Finish Density? Diddy Did It in class today

  4. Measurement Practice • Watch the scale of each graduated cylinder! • Is it 1.0mL? • Is it 0.1mL? • Is it 2.0mL? • You may use a calculator for volume of a solid = l*w*h • You may use a hand lens for the triple beam balances

  5. Ms. Smith Mrs. Malone Ms. Cedillo Density October 22, 2013 • DO NOW: • Date: October 22, 2013 • 6.6B calculate density to identify an unknown substance • Put your CB on your desk • Read the Do Now Reading • Q?: The atoms of an element are made of the three subatomic particles. What are the names of the subatomic particles?

  6. ANNOUNCEMENTS! • Homework: Calculating Density Practice – due Friday • Science Olympiad Club: Meets Monays after school • Friday Quiz: Be able to calculate density to identify an unknown

  7. Pre-AP Measurement Practice • Watch the scale of each graduated cylinder! • Is it 1.0mL? • Is it 0.1mL? • Is it 2.0mL? • You may use a calculator for volume of a solid = l*w*h • You may use a hand lens for the triple beam balances • When you finish: Pick a left side assignment from pages 6-7 in your comp book and complete an assignment on Density on your next available left page

  8. Ms. Smith Mrs. Malone Ms. Cedillo Density October 23-24, 2013 • DO NOW: • Date: October 23-24, 2013 • 6.6B calculate density to identify an unknown substance • Put your CB and Measurement Practice Packet on your desk • Read the Do Now Reading • Q?: How did Lavoisier prove that matter is never lost or gained?

  9. ANNOUNCEMENTS! Homework: Calculating Density Practice due Friday Science Olympiad Club: Meets Mondays after school Friday Quiz: Be able to calculate density to identify an unknown

  10. Grade Level Measurement Practice • Watch the scale of each graduated cylinder! • Is it 1.0mL? • Is it 0.1mL? • Is it 2.0mL? • You may use a calculator for volume of a solid = l*w*h • You may use a hand lens for the triple beam balances • When you finish: Pick a left side assignment from pages 6-7 in your comp book and complete an assignment on Density on your next available left page

  11. Pre-AP: Before we start the lab… • Put backpacks under table • Pre-AP: You will have time to complete the Measurement Practice Packet after today’s lab. Please turn in your Measurement Practice Packet today. • Clear desk – we’re using water! • Write first and last name on your lab paper!

  12. Ms. Smith Mrs. Malone Ms. Cedillo Searching for Density Lab October 23-24 2013 • Yellow- Materials Manager • Only person allowed out of seat during lab • Obtains and returns all lab materials • Blue- Safety/Clean-up Manager • Enforces all safety rules • Green- Activity Director • • Reads directions to the group • • Keeps group on-task • Red - Data Manager • Records all data • Ensures all group members have lab data :

  13. Searching for Density Lab • Describe your cylinders with detail (translucent yellow cylinder, 3.7cm in length, shiny, rubbery solid, feels heavy for its size) • Take accurate measurements – there is a right answer! • Measure length in centimeters (cm) to one decimal place (Example: 3.7cm) • Measure volume in milliliters (mL) to one decimal place (Example: 4.5mL) • Measure mass in grams (g) to two decimal places (Example: 86.35g) • 0.77 g/mL = Maple • 0.90 g/mL = Polypropylene • 1.15 g/mL Polyamide (Nylon) • 1.17 g/mL = Acrylic #1 • 1.17 g/mL = Acrylic #2 • 1.23 g/mL = Polyurethane • 1.32 g/mL = Phenolic • 1.37 g/mL = PVC #1 • 1.37 g/mL = PVC #2 • 1.37 g/mL = PVC #3 • 2.2 g/mL = PTFE (Teflon) • 2.71 g/mL = Aluminum

  14. Ms. Smith Mrs. Malone Ms. Cedillo Density October 25, 2013 • DO NOW: • Date: October 25, 2013 • 6.8B calculate density to identify an unknown substance • Turn in Calculating Density Practice Homework (Pink Paper) • Keep your gold Do Now sheet in a safe place for next week • Read the Do Now Reading • 3. Q?: How is oxidation a chemical reaction?

  15. ANNOUNCEMENTS! Homework: Check Gradespeed and class website for missing work Tutorials: Monday after school Science Olympiad Club meets Monday after school Energy Next Week!

  16. The Case of the Lost Labels Quiz • Put your first and last name on the paper • Show all work – all problems should be set up like the first problem for full credit • Identify the mystery liquids and add them to the data table • Work on Measurement Practice Packet when finished and turn it in! • Did you turn in your Pink Calculating Density Practice Homework paper? • Did you turn in your Yellow Do Now sheet?

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