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Science Notebook Layout DON’T COPY UNDERLINED TEXT Mrs. Aguirre’s Webpage: http://www.quia.com/profiles/caguirre. Density of Solids. Introduction to Density Which weighs more, a pound of feathers or a pound of bricks? Explain. Data Table:. Density calculation: Density = Mass/Volume

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Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre

Density of Solids

Introduction to Density

Which weighs more, a pound of feathers or a pound of bricks? Explain.

Data Table:

Density calculation:

Density = Mass/Volume

= ___g/ ___mL

= ____g/mL

We think this object is : _____ because…

Describe the objects- color, etc

Measure Mass with scale in grams.

Use the displacement method to find the volume in mL.

Graph your data on graph paper. Draw trend line.

Calculate the item’s density in g/mL.*** (slope of line- average)

Use the chart to try to identify what the item is.

For each item, write two observations- one qualitative and one quantitative. Under the chart, make a list:

How they are similar: How they are different:

Densitydescribes how much mass is in a given volume of a material.

Mass is measured by a scale in grams.

Volume can be measured by a technique called displacement.

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Page 26: Density Stations

Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre

Page 27: Density Stations

Draw pictures to show each technique for finding the volume.

Station 1: Rock Density calc: D= M/V

=___g/___mL

= ____ g/mL

Put the measured numbers for each measurement on page 27 in notebook on the pictures to show what was measured.

Station 1: Rock- how to find volume of a rock

(irregularly shaped object) (look

on page 78 of textbook!!)

Station 2: Wood block Density calc: D= M/V

=___g/___mL

= ____ g/mL

Station 2: block - how to find volume of wood block

(calculating volume of rectangular

solid) (look on page 79 of book!!)

Station 3: Liquid Density calc: D= M/V

=___g/___mL

= ____ g/mL

Station 3: Liquid - how to find mass and volume of

water(look on page 78 of

textbook!!)

Station 4: Golf Ball Density calc: D= M/V

=___g/___mL

= ____ g/mL

Station 4: Golf Ball - how to find volume of a golf ball)

(describe how to use

displacement can)

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Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre

Density Stations

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Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre

Page 28: Liquid Layers Reflection

Page 29: Liquid Layers

Prentice Hall density column video:

Name 3 items denser than water. Explain why you think they are denser.

What is the difference between mass and density?

Why does she tilt the cylinder when she is pouring the liquids?

Why do the liquids form layers?

Why do the solids float between the layers?

What do you think the four liquids are? Yellow: Red: Blue: Green:

Correct order from top to bottom.

Which is most dense? Why?

Which is least dense? Why?

What would happen if you turned the straw upside down? Why?

6. Calculate the density of each liquid: (each cylinder has 50 mL of liquid in it)

Blue:

Green:

Yellow: Red:

Water, salt water, isopropanol, and glycerine.

Each is colored a different color.

Make a hypothesis of the order.

Fill it in the blanks

Test it out.

Draw arrows to show the movement of the liquids up or down.

Repeat until you get the order correct.

Once you have the order correct, draw it NEATLY on page 29- color it!!

Describe how you figured it out in a short paragraph

Density = mass / volume

= ____ g / 50 mL

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Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre

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In each box, you must have a labeled picture (with vectors!!) and a description of what is happening

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Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre

Buoyancy Analysis

• #7. Does increasing the weight of the film can affect the buoyant force?
• Hypothesis: When you add pennies to the can, the buoyant force will ________ because _________.
• Test it out:
• Weight of heavier film can in air: _____ N
• Weight of heavier film can under water: _____N
• Buoyant force (subtract!!!) : _____N
• Compare the buoyant forces (today’s vs yesterday’s)

#8. How does the buoyant force compare to the weight of the displaced water?

• Collect displaced water from displacement tank
• Weigh it on the scale using NEWTONS!!!

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Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre

The Physics Of Ice Cream

For each box, draw a picture and write one main idea.

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Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre

Dance of the Molecules

Explain the motion of the molecules in each state

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Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre

Intermolecular Forces (Page 96)

In each box, include a picture to describe main idea of reading and a 1-2 sentence summary of the paragraph.

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Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre

41 Squ eeeee zing molecules

Problem: How does the volume of matter change if pressure is increased?

Info we have:

Particle theory of matter

solid liquid gas

What will happen to the volume of each as books are piled on (give % eg 100%, 0%, 50%, ? Give a reason for each.

Gas (air): The volume will be ____ % because____

Liquid (water): The volume will be ____ % because____

Solid (ice): The volume will be ____ % because____

40 Data Analysis: What percent of the volume of each remains after pressure is increased?

Gas (air): Percent = ----- x 100 =

Liquid (water): ----- x 100 =

Solid (ice): ----- x 100 =

Conclusion:

Gas: 3 lines max

EXPLAIN WHY THE VOLUME CHANGED. Use reasons from your notes on pages 35-36 Include: how CLOSELY PACKED THE MOLECULES MUST BE. Underline the word molecules

Liquid:

3 blank lines

Solid:

For each (solid, liquid), EXPLAIN WHY THE VOLUME DIDN’T CHANGE. Use reasons from your notes on pages 35-36. Include: how CLOSELY PACKED THE MOLECULES MUST BE. Underline the word molecules.

Conclusion:

The most surprising conclusion from this experiment was… Look at your hypothesis!

Picture

Draw the syringe with and without books.

Include numbers to show volume with 0 books

and volume with 4 books.

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Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre

Melting Ice Graph

My melting point was:_______________

Magic Shell Lab

What is the freezing/ melting point of Magic Shell?

A)Define Melting/freezing point:

B) What does temperature tell us about the motion of molecules?

Magic Shell Discussion

1) Look at the temperatures you recorded as you cooled the shell topping. It will seem almost as if the mixture “stalled” at a certain temperature. What is this temperature?

2) Look at the temperatures you recorded as you heated the shell topping. Is the “stalled” temperature about the same as it was when you cooled the mixture?

3. See next page for graph of magic shell

3) Make a cooling curve graph and a heating curve graph. Place time on the x axis and temperature on the y axis.

Label the area of your cooling graph where freezing occurred. Label the area of your heating graph where melting

occurred.

4. When you cooled and then heated the shell topping, the temperature “stalled.” What was happening at this temperature?

5. What would magic shell topping be like if the freezing/melting point was 20 °C?

6. What about if the freezing/melting point was 0 °C?

Roles: my role is___________

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Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre

Temp.

Time

Ice Cream- Page 45

Changes of State- use pages 96-101 in California Physical Science book

Words to use:

Freezing

Melting

Vaporization

Condensation

Boiling

Evaporation

Sublimation

Predict how the temperature will change as your ice cream freezes.

gas

Why does adding salt to ice make it colder?

liquid

Chlorine (Cl)

Sodium (Na)

Salt= NaCl

A) Draw each state,

B) Add arrows and labels for each of the changes of state listed

C) Include pictures of the

changes of state

D) All should be colored!!

The melting/ freezing point of water is _____ ˚C.

By adding salt to ice it ____________ the melting/ freezing point to below 0˚C.

Heat energy is needed to change _____________ ice to ______________ water.

This makes the temperature low enough to _____________ the liquid milk into ____________

ICE CREAM!!!!

solid

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Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre

It’s Freezing Discussion

Ice only Line

Ice and salt Line

• 1. What happened after you added the salt to the ice? Was the temperature above or below the ice only?
• 2. What is the only factor that could have caused the changes shown in question 1? What does this tell you about the freezing point temperature of salt water compared to fresh water?
• Use page 260 to give explanation.
• 3. Heat energy is needed to change phase from a solid to a liquid. List the possible sources of the heat needed for this phase change in your beaker.
• Use page 260 to give explanation.
• 4. Explain how we could use the information we found out
• about temperature changes in salt water in this experiment to make ice cream.
• 5. In the radiator of your car you put a combination of antifreeze and water to keep your car engine cool in the summer and prevent the radiator from freezing in the winter. Explain how you think this works in terms of what you saw in the experiment you just did.
• Use page 261 to give explanation.

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