Post on 24-Feb-2016
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10/4 Warm UpIn your Salt Water Race Paper:
Tell me 2 things you would do different (different variables)
Close notebook when you are done
In notebook you should have:• Title page “Salt Water Races”
1. write the variable you will be changing.2. Write down your materials needed3. Write down the exact procedures4. Write down the dependent 5. and independent variables6. Write down the time of dissolving for your team7. Data Table 8. Graph9. Conclusions (what did you notice influenced how
fast salt will dissolve)10.2 things you’d change/do different
Team
Variable Time to dissolve (min)
1 Hotness
2 Weak sauce
3 Crushin’
4 Vinegar
5 Larger beak
6 Coldness
7 Smaller beak
9 min8 min7 min6 min5 min4 min3 min2 min1 min
1 2 3 4 5 6 7Teams
P1 Data TableTeam Variable Time to dissolve
(min)1 Sabrina HCl Acid 3:53
2 Wesley Hot water 1:44
3 Alice 2:17
4 Cass KS HCl Acid 3:19
5 Tyler Crushin’ 2:25
Warm up: Copy P2 data table in notebookTeam Variable Time to dissolve
(min)1 Joan 2:232 Jed 1:563 Josh 1:374 Colton 3:185 Bailey 3:176 Nate 2:027 Helen 1:308 Jake 1:29
Warm up: Copy P3 data table in notebookTeam Variable Time to dissolve
(min)1 Bo 2:13
2 Chase 4:43
3 Alexis 5:54
4 Braxtynn 6:30
5 Marisa 4:57
6 Mariah 2:16
7 Michael 2:43
8 Carlos 4:40
9 Gabby 3:12
10 Shayli 3:12
Warm Up: Copy P5 data table in notebookTeam Variable Time to dissolve
(min)1 Samantha 1:47
2 Trayton 4:03
3 Devin 3:13
4 Jenica 1:23
5 Kevin 6:19
6 Kiera 3:22
Warm up: In notebook -Make sure you have all 10 steps
• Title page “Salt Water Races”1. write the variable you will be changing.2. Write down your materials needed3. Write down the exact procedures4. Write down the dependent 5. and independent variables6. Write down the time of dissolving for your team7. Data Table 8. Bar Graph9. Conclusions (what did you notice influenced how
fast salt will dissolve)10.2 things you’d change/do different
9 min8 min7 min6 min5 min4 min3 min2 min1 min
1 2 3 4 5 6 7Teams
Team Variable Time to dissolve (min)
1 Katie HCl acid 4:59
2 Jada HCl acid 6:00
3 Fluffy – O Hot water 2:17
4 Dallin Crushin’ 2:39
Warm Up: copy P7 Data Table in notebookTeam Variable Time to dissolve
(min)1 Hyrum 3:01
2 Erandeny 4:51
3 Miguel 1:41
4 Callie 2:48
5 Kaiden 2:49
6 Rex 1:26
7 Alexis 4:35
8 Lexi 4:13
9 Jenny 2:47
In notebook you should have:• Title page “Salt Water Races”
1. write the variable you will be changing.2. Write down your materials needed3. Write down the exact procedures4. Write down the dependent 5. and independent variables6. Write down the time of dissolving for your team7. Data Table 8. Graph9. Conclusions (what did you notice influenced how
fast salt will dissolve)10.Extra credit: Was dissolving a physical or
chemical change?
Team
Variable Time to dissolve (min)
1 Hotness
2 Weak sauce
3 Crushin’
4 Vinegar
5 Larger beak
6 Coldness
7 Smaller beak
9 min8 min7 min6 min5 min4 min3 min2 min1 min
1 2 3 4 5 6 7Teams
What: Effects of Physical and Chemical Changes
So what can you do to dissolve things faster?
http://www.flickr.com/photos/ericawalker/4368239806/lightbox/
http://www.flickr.com/photos/jesh1223/2186803026/lightbox/
http://www.flickr.com/photos/56676379@N08/5232410098/
1. Add heat2. Decrease particle size3. Increase the amount of liquid
Decide which is a P or C change that we did to make the salt dissolve faster?
• Heated up water• Crushed salt• Dissolved salt• Added HCl
Physical Change
Physical Change
Physical Change
Chemical Change
Other things that have applications with changes and reactions
• Catalyst Hydrogen• Cooking a raw egg• Detergent
Review for quiz
• Give an example of when each type of energy was released
Heat energy Mothball, Water, Elephant toothpaste labs
Light energy magnesium strips, fuego labSound energy hydrogen balloon, chladni plates
Use this graph to answer the following questions in your notebook.
Water Phases Graph Questions1. What is the temperature range for solid H20?2. What is the temperature range for liquid H20?3. What is the temperature range for gas H2O?4. At what temperature does the solid turn to a liquid?5. That point is called:6. At what temperature does the liquid turn into a gas?7. That point is called?8. What is occurring when the temperatures are staying constant?9. When are the molecules moving the fastest?10. When are the molecules moving the slowest?11. What is added or taken away to change the speed of the molecules?