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# Density - PowerPoint PPT Presentation

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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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.

• Copy down this week’s TEKS

• 5. Q?: Who was the person who named Oxygen?

• Why is Oxygen such an important element?

• 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

• 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

• 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

Mrs. Malone

Ms. Cedillo

Density

October 22, 2013

• DO NOW:

• Date: October 22, 2013

• 6.6B calculate density to identify an unknown substance

• Q?: The atoms of an element are made of the three subatomic particles. What are the names of the subatomic particles?

• Homework: Calculating Density Practice – due Friday

• Science Olympiad Club: Meets Monays after school

• Friday Quiz: Be able to calculate density to identify an unknown

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

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

• Q?: How did Lavoisier prove that matter is never lost or gained?

Homework: Calculating Density Practice due Friday

Science Olympiad Club: Meets Mondays after school

Friday Quiz: Be able to calculate density to identify an unknown

• 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

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!

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

• Red - Data Manager

• Records all data

• Ensures all group members have lab data

• :

• 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

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

• 3. Q?: How is oxidation a chemical reaction?

Homework: Check Gradespeed and class website for missing work

Tutorials: Monday after school

Science Olympiad Club meets Monday after school

Energy Next Week!

• 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?