Warm-up 9/14/09 BE ready for test. BE ready for test. Yellow packet Yellow packet Test Today Test Today.

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Presentation transcript:

Warm-up 9/14/09 BE ready for test. BE ready for test. Yellow packet Yellow packet Test Today Test Today

Warm-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: What is intensive and extensive properties? Look in book Warm-up 9/16/10 What is the formula for density? What is the formula for density? Do you know the formula triangle? What are mass and volume? What are mass and volume? D = m/v

Pre-lab What is the formula for calculating volume of cylinder? How do we calculate the volume of irregularly shaped object? Water displacement Eureka!!! V=  r 2 h

Density Problems If 25.6 grams of a substance has a volume of 5.7 mL, what is the substance? How do I know how to round it off? If 25.6 grams of a substance has a volume of 5.7 mL, what is the substance? How do I know how to round it off? What mass of aluminum occupies 18.98cm 3 ? What mass of aluminum occupies 18.98cm 3 ? 25.6 g = = 4.5 to sig figs 5.7mL D = m/v 2.702g/ml = m/18.98cm 3 m = grams Use yellow packet find density of aluminum

Density Lab 9/17/09 What is each cylinder made of? 4 different types of cylinder use formula for cylinder to calculate volume of silver and gold use formula for cylinder to calculate volume of silver and gold use water displacement to calculate volume of black and white plastic use water displacement to calculate volume of black and white plastic measure mass of all on balance measure mass of all on balance

Penny Lab 1) Select 10 Pre-82 pennies and 10 ‘83 and newer 2) Determine the density of each set of pennies. You can use either method to determine volume. 3) Find the metal on page R-47 through R-49 Make sure it sounds like a reasonable metal 4) What other physical or chemical properties could we use to make the final distinction

Essential Question: What are chemical vs physical properties? Warm-up 9/15/09 What are physical and chemical changes? To do Quiz Thursday (some warm-ups)

Unit Essential Question: What is density? Daily EQ: Can we graph density? Warm-up 9/16/09 1) What is the density of 78 grams of aluminum that has a volume of 28.87mL? 2) How many grams of gold were found in the ship wreck if it occupied 435cm 3 of space (density of gold is g/cm 3) ? Quiz tomorrow Quiz tomorrow

Unit Essential Question: What is density? Daily EQ: Can we graph density? Warm-up 9/17/09 1) The slope of the mass vs. volume graph is equal to what? 2) When graphing mass vs. volume who is on what axis? Quiz Today – Yeah!!

Unit Essential Topic: Physical vs Chemical changes, The battle wages on ! Warm-up 9/18/09 1) Daily EQ: What three things indicate that you have had a chemical change/reaction? What is Find and Fix? Quiz returned – figure out which ones you got wrong and find correct errors