*is the creation of ice cream a chemical reaction?*
-yes is a chemical reaction
* what's is my favorite flavor?*
- as you can see above my favorite flavor is
strawberry
- as you can see above my favorite flavor is
strawberry
* Back ground information:-)*
Certain substances affect the state of ice. When salt is sprinkled on ice, for example, it causes the ice to melt. This chemical reaction is actually a heat energy transfer. Water freezes at 0°C. A saturated saltwater solution freezes at -32°C. *What happens if you sprinkle salt on ice?*
- it melt the ice because it changes the point that
which the substance freezes
*Material list*
-1/2 cup milk
-1/2 cup whipping cream (heavy cream)
-1/2 cup whipping cream (heavy cream)
-1/4 cup sugar
-1/4 teaspoon vanilla or vanilla flavoring (vanillin)
-3/4 cup sodium chloride (NaCL)as a table salt or
rock salt
-2 cups ice
-1-quart Ziploc bag
-1-gallon Ziploc bag
-thermometer
-measuring cups and spoons
-cups and spoons for eating your treat!
*Procedure*
1. add 1/4 cup sugar, 1/2 cup milk ,1/2 cup
whipping cream, and 1/4 teaspoon vanilla to the
quart Ziploc bag. seal the bag securely.
2. put 2 cups of ice into the gallon Ziploc bag
3. use a thermometer to measure and record the
temperature of the ice in the gallon bag.
4. add 1/2 to 3/4 cup salt (sodium chloride)to the
bag of ice.
5. place the sealed quart bag inside the gallon bag
ice and salt. seal the gallon bag securely.
6. gently rock the gallon bag from side to side .
it's best to hold it by the top seal or to have
gloves or a cloth between the bag and your
hands because the bag will be cold enough to
damage your skin.
7.continue to rock the bag for 10-15 minutes or
until the contents of the quart bag have solidified into ice cream.
8.open the gallon bag and use the thermometer to
mesure and record the temperature of the ice/salt mkixture.
9. remove the quart bag, open it, serve the contest into cups with spoons and ENJOY!!!!!!!!!!!!!!!!!
Data:
1. what kind of ice cream are you making?
- I'm making strawberry ice cream
2.document the temperature of the ice in the
gallon bag before adding the salt?
-the temperature of the ice before adding the salt
is 3 degrees.
3.document the temperature of the ice/salt mixture (not the ice cream ) in the gallon bag when the cream mixture begins to solidify.
-___-2___
4. what is the temperature differences before
adding the salt and after mixing for 5 minutes
minutes?
-the temperature got colder
5. what is the temperature difference before
adding the salt and after mixing for 10
minutes?
-it got even more colder and the ice started to melt
*conclusion*
*conclusion questions*
1.did you notice any difference between your ice
cream and other's people ice ream?
-my ice cream had more flavor i felt like it had
more sugar.
-1/4 teaspoon vanilla or vanilla flavoring (vanillin)
-3/4 cup sodium chloride (NaCL)as a table salt or
rock salt
-2 cups ice
-1-quart Ziploc bag
-1-gallon Ziploc bag
-thermometer
-measuring cups and spoons
-cups and spoons for eating your treat!
*Procedure*
1. add 1/4 cup sugar, 1/2 cup milk ,1/2 cup
whipping cream, and 1/4 teaspoon vanilla to the
quart Ziploc bag. seal the bag securely.
2. put 2 cups of ice into the gallon Ziploc bag
3. use a thermometer to measure and record the
temperature of the ice in the gallon bag.
4. add 1/2 to 3/4 cup salt (sodium chloride)to the
bag of ice.
5. place the sealed quart bag inside the gallon bag
ice and salt. seal the gallon bag securely.
6. gently rock the gallon bag from side to side .
it's best to hold it by the top seal or to have
gloves or a cloth between the bag and your
hands because the bag will be cold enough to
damage your skin.
7.continue to rock the bag for 10-15 minutes or
until the contents of the quart bag have solidified into ice cream.
8.open the gallon bag and use the thermometer to
mesure and record the temperature of the ice/salt mkixture.
9. remove the quart bag, open it, serve the contest into cups with spoons and ENJOY!!!!!!!!!!!!!!!!!
Data:
1. what kind of ice cream are you making?
- I'm making strawberry ice cream
2.document the temperature of the ice in the
gallon bag before adding the salt?
-the temperature of the ice before adding the salt
is 3 degrees.
3.document the temperature of the ice/salt mixture (not the ice cream ) in the gallon bag when the cream mixture begins to solidify.
-___-2___
4. what is the temperature differences before
adding the salt and after mixing for 5 minutes
minutes?
-the temperature got colder
5. what is the temperature difference before
adding the salt and after mixing for 10
minutes?
-it got even more colder and the ice started to melt
*conclusion*
1.) What kind of chemical reaction is the process of ice cream making, as done in our lab? Explain why.
-
2.) Explain why salt water is harder to freeze than plain water.
- Freshwater would freeze faster then saltwater.The salt in saltwater will keep it from freezing until the temperature is very low. The more salt in the water the lower the freezing temperature.
3.) Is the process of making ice cream a physical or chemical change? Explain your answer.
-technicality you are changing a liquid to a solid or semi-solid so as you don't want your ice cream to be hard as a rock-this is not a chemical change
4.) Why is salt used with the ice instead of sugar?
-salt is used in ice cream because of a special property it possesses: it lowers the freezing temperature of water .Rock salt melts ice,when rock salt is combined with ice and use to cool the mixing canister for ice cream, the resulting slurry is more effective at cooling the canister then unmelted ice .*conclusion questions*
1.did you notice any difference between your ice
cream and other's people ice ream?
-my ice cream had more flavor i felt like it had
more sugar.
