Warm Up

Complete section A onlyWrite on the handout

Glue into your notebook

Warm UpGet out your homework: I am going to check it!

NO TALKING. NO EXCEPTIONS.

SIT IN ASSIGNED SEATS.

4th Block Lab Table must be in notebook!

• Room Temperature Results:Sand Salt Sugar

1 spoonful: did the solute dissolve?

3 spoonfuls: did the solute dissolve?

4th Block LabTable must be in notebook!

• Increased Temperature Results:Sand Salt Sugar

When we added heat, did it cause the solution to increase, decrease, or stay the same?

Solubility:Increased

Decreased

Stayed the same

Solubility:Increased

Decreased

Stayed the same

Solubility:Increased

Decreased

Stayed the same

4th Block Hypothesis vs. lab resultsMust be in notebook:

• My hypothesis was ____________. (correct / incorrect)

4th Block ConclusionMust be in notebook!

• After conducting this experiment, I learned that ________________________________________________________________________________________,____________________________________________________________________________________, and ________________________________________________________________________________________.

• I now know that solubility _____________ (increases/ decreases)

with increased temperature.

4th Block Solubility Notes – Write in notebook

• A solute’s solubility depends on :– type of solvent used – the temperature

• The most common solvent = water known as the “universal solvent”

4th Block Discovery Ed video

• “Solubility”• “Solutions”

Experiment Time

• Do you think a crayon and an ice cube will melt at the same time?

• Different substances have different melting points

• The crayon and ice cube melted at different rates and times because they have different melting points!

• What has the higher melting point (takes the most heat to melt)?

Experiment Time

• Do you think milk and water will boil at the same time?

Different substances have different boiling points

The milk and water boiled at different rates and times because they have different boiling points!

Experiment Time!

• Is oil soluble in water?

• No, oil is not soluble in water. When we mix them together, they settle out into two distinct layers.

• They do not mix together = they are insoluble!

• Different substances have different solubilities

Density Notes

• Review your Density Definition = how “crowded” the atoms are in matter• Different substances have different

densities

• Density of water = 1.0 gram / mL

Density Notes

• If density of a substance > the density of water = it will sink

• If density of a substance < the density of water = it will float

Oil and Water Question?

• Why is the oil on top of the water?

• The oil’s density = 0.926 grams/ mL• Water’s density = 1.0 g/ mL

Discovery Ed. videos

• “Density”• “Measuring Volume and Density”

Density Column Lab

• Purpose: What will happen if I pour liquids of different densities into the same container?• Research: my notes

Density Column Lab

• Hypothesis: If I pour water, oil and syrup into the same container, then I think..

the liquids will all mix together.or

the liquids will separate into distinct layers.

Density Column Lab

• Materials:–Water–Oil–Dish soap–Transparent container

Density Column Lab

• Analysis: Record the results in your notebook

Liquid at Top of container:

Liquid in Middle of container:

Liquid at Bottom of container

Hypothesis vs. lab results

• My hypothesis was ____________. (correct / incorrect)

Conclusion

• After conducting this experiment, I learned that ________________________________________________________________________________________,____________________________________________________________________________________, and ________________________________________________________________________________________.

• I now know that if I mix materials with different densities then the materials will __________________

____________________________________________________________________________________________

Density Worksheet

• Complete section B on the handout

Homework

• Review for quiz• Finish your density worksheet (glue into

notebook)• Complete your illustrations on your foldable!