Warm-up 9/14/09Warm-up 9/14/09

BE ready for test.BE ready for test. Yellow packetYellow packet

Test TodayTest Today

Warm-up 9/14/10Warm-up 9/14/10

What is Matter?What is Matter? List 10 things that are matter.List 10 things that are matter.

What is mass?What is mass? What is volume?What is volume?

Essential Questions: Essential Questions: What is intensive and What is intensive and

extensive properties?extensive properties? Look in bookLook in bookWarm-up 9/16/10Warm-up 9/16/10

What is the formula for density?What is the formula for density?

Do you know the formula triangle?Do you know the formula triangle?

What are mass and volume?What are mass and volume?

D = m/v

Pre-labPre-lab

What is the formula for calculating volume of What is the formula for calculating volume of cylinder?cylinder?

How do we calculate the volume of irregularly How do we calculate the volume of irregularly shaped object?shaped object?

Water displacement Eureka!!!

V= r2h

Density ProblemsDensity Problems

If 25.6 grams of a substance has a volume of If 25.6 grams of a substance has a volume of 5.7 mL, what is the substance? How do I 5.7 mL, what is the substance? How do I know how to round it off?know how to round it off?

What mass of aluminum occupies 18.98cmWhat mass of aluminum occupies 18.98cm3 3 ??

25.6 g = 4.49122807 = 4.5 to sig figs5.7mL

D = m/v2.702g/ml = m/18.98cm3

m = 51.28 grams

Use yellow packet find density of aluminum

Density Lab 9/17/09Density Lab 9/17/09What is each cylinder made of?What is each cylinder made of?

4 different types of cylinder4 different types of cylinder

use formula for cylinder to calculate volume of use formula for cylinder to calculate volume of silver and gold silver and gold

use water displacement to calculate volume of use water displacement to calculate volume of black and white plasticblack and white plastic

measure mass of all on balancemeasure mass of all on balance

Penny LabPenny Lab

1) Select 10 Pre-82 pennies and 10 ‘83 and 1) Select 10 Pre-82 pennies and 10 ‘83 and newernewer

2) Determine the density of each set of pennies.2) Determine the density of each set of pennies.

You can use either method to determine You can use either method to determine volume.volume.

3) Find the metal on page R-47 through R-493) Find the metal on page R-47 through R-49

Make sure it sounds like a reasonable metalMake sure it sounds like a reasonable metal

4) What other physical or chemical properties 4) What other physical or chemical properties could we use to make the final distinctioncould we use to make the final distinction

Essential Question: What are chemical vs Essential Question: What are chemical vs

physical properties?physical properties? Warm-up 9/15/09Warm-up 9/15/09

What are physical and chemical changes?What are physical and chemical changes?

To doTo do

Quiz Thursday (some warm-ups)Quiz Thursday (some warm-ups)

Unit Essential Question: What is density?Unit Essential Question: What is density? Daily EQ: Can we graph density?Daily EQ: Can we graph density?

Warm-up 9/16/09Warm-up 9/16/09

1) What is the density of 78 grams of aluminum 1) What is the density of 78 grams of aluminum that has a volume of 28.87mL?that has a volume of 28.87mL?

2) How many grams of gold were found in the 2) How many grams of gold were found in the ship wreck if it occupied 435cmship wreck if it occupied 435cm33 of space of space (density of gold is 19.31 g/cm(density of gold is 19.31 g/cm3)3) ? ?

Quiz tomorrowQuiz tomorrow

Unit Essential Question: What is density?Unit Essential Question: What is density? Daily EQ: Can we graph density?Daily EQ: Can we graph density?

Warm-up 9/17/09Warm-up 9/17/09

1)1) The slope of the mass vs. volume graph is The slope of the mass vs. volume graph is equal to what?equal to what?

2)2) When graphing mass vs. volume who is When graphing mass vs. volume who is on what axis?on what axis?

Quiz Today – Yeah!!Quiz Today – Yeah!!

Unit Essential Topic: Physical vs Chemical changes, Unit Essential Topic: Physical vs Chemical changes,

The battle wages on !The battle wages on !

Warm-up 9/18/09Warm-up 9/18/09

1)1) Daily EQ: What three things indicate that Daily EQ: What three things indicate that you have had a chemical change/reaction?you have had a chemical change/reaction?

What is Find and Fix?What is Find and Fix?

Quiz returned – figure out which ones you got Quiz returned – figure out which ones you got wrong and find correct errorswrong and find correct errors