Name of Project: Rock Candy
Question:
What would happen if we put less sugar in our solution?
Hypothesis: If we put less sugar in the jar of fewer crystals will form because of the lessor amount of sugar the jar contains.
Variables:
Independent: changing the amount of sugar
Controlled: the amount of water
Dependent: how big the crystals grow
Materials and Tools:
1.Add sugar and water into the pan.
2.heat the mixture to a boil stir constantly you want the soulution to boil but not cook to long or get to hot.
3.stir the solution so everything is dissolved. The liquid has to be clear or straw colored With no sparkly sugar.
4. You can add food coloring to the solution .
5. Set the pot of solution with the sugar in the refrigerator to cool. The liquid needs to be 50 degrease F. Slightly cooler than room temp. Sugar becomes less soluble as it cools so chilling the solution so it makes it less chances to accidentally dissolving sugar you are Bout to coat on your string. While your sugar is cooling down prepare your string.
6. Tie a bull clip to the string . You need to use cotton string because it is rough safe and non- toxic. Tie the string to a pencil. Make sure the string hangs in the jar and does not touch the sides.
7.You don't want to weigh your string around anything toxic you rather use a metal object.
8. You want to seed the string with the crystals so that the rock candy so that the candy can form on the string. You want to dip your string in a little sugar.
9. Once your solution Is cool pour it into t
A clean jar. Put the pencil on top of the jar an seal the jar and put in a quiet place.
10. Check on rock candy every once in a while and let them grow for 3-7 days.
11. If you chose to make the crystals bigger remove any sugar crust that grows on top of the jar.
Research:
When you are making rock candy you are making crystals. To start this you make a supersaturated solution. A solution is a well mixed mixture with particles dissolved. When it is saturated it means no more can dissolve into the solution. Supersaturated means to have way more sugar than can dissolve. The solution is now unstable. Molecule by molecule the sugar crystals come together on the string. They clump together and form crystals.
As the jar sits the water evaporates from the solution the sugar molecules clump on to the string. Sugar molecules are shaped differently . They don't look like salt molecules. It takes millions of them to layer onto the string. It takes a rate of millions of molecules every hour. It would take a day for the crystals to be visible then a week for them to use up all of the sugar. Sugar crystals can not be disturbed while trying to grow or it could take longer to grow. Usually sugar crystals take 3-7 days to form.
Rock candy has been around since the ninth century. Rock candy takes a lot of sugar. Our experiment took 2-3 cups of sugar. It is very sugary but very good to eat.
Results:
Less sugar solution -Yellow
Day 1. No crystals
Day 2. Crystals disturbed,no growth notice.
Day 3. Bigger
Day 4. No change
Day 5. Giant,could tell the growth,the solution lowered. Day 6. Really big growth,clumping around the string and the bull clip
Day 7. Crystals getting thicker,solution has not changed
Regular sugar solution-Blue
Day 1. No crystals
Day 2. Just little crystals
Day 3. No growth
Day 4. The solution lowered,more crystals that the one with less sugar.
Day 5. Could tell the growth of the candy,a lot more crystals.
Day 6. Really bigger,the clip is stuck to the bottom of the jar.
Day 7. Crystals are bigger than day 6, solution has lowered.
Conclusion:
Our hypothesis is correct. To put less sugar, few crystals will grow. We thought the one with three cups of sugar would turn out better and it did because it grew faster and formed more crystals. Our data showed on the second and third day, the rock candy in the blue jar had really good growth. The liquid that made the crystals got lower every time that the crystals grew. The yellow jar started to grow first but the blue jar has more crystals.
What would happen if we put less sugar in our solution?
Hypothesis: If we put less sugar in the jar of fewer crystals will form because of the lessor amount of sugar the jar contains.
Variables:
Independent: changing the amount of sugar
Controlled: the amount of water
Dependent: how big the crystals grow
Materials and Tools:
- 7 cups of sugar ( 1 solution has 3 cups, 1 solutions has 4 cups)
- 1 cup of water
- 2 clean glass jars
- Cotton string
- Food coloring
- 1/2 tsp to 1 tsp flavoring oil or extract per jar
- 1 bull clip
- Pan
- Stove or microwave
1.Add sugar and water into the pan.
2.heat the mixture to a boil stir constantly you want the soulution to boil but not cook to long or get to hot.
3.stir the solution so everything is dissolved. The liquid has to be clear or straw colored With no sparkly sugar.
4. You can add food coloring to the solution .
5. Set the pot of solution with the sugar in the refrigerator to cool. The liquid needs to be 50 degrease F. Slightly cooler than room temp. Sugar becomes less soluble as it cools so chilling the solution so it makes it less chances to accidentally dissolving sugar you are Bout to coat on your string. While your sugar is cooling down prepare your string.
6. Tie a bull clip to the string . You need to use cotton string because it is rough safe and non- toxic. Tie the string to a pencil. Make sure the string hangs in the jar and does not touch the sides.
7.You don't want to weigh your string around anything toxic you rather use a metal object.
8. You want to seed the string with the crystals so that the rock candy so that the candy can form on the string. You want to dip your string in a little sugar.
9. Once your solution Is cool pour it into t
A clean jar. Put the pencil on top of the jar an seal the jar and put in a quiet place.
10. Check on rock candy every once in a while and let them grow for 3-7 days.
11. If you chose to make the crystals bigger remove any sugar crust that grows on top of the jar.
Research:
When you are making rock candy you are making crystals. To start this you make a supersaturated solution. A solution is a well mixed mixture with particles dissolved. When it is saturated it means no more can dissolve into the solution. Supersaturated means to have way more sugar than can dissolve. The solution is now unstable. Molecule by molecule the sugar crystals come together on the string. They clump together and form crystals.
As the jar sits the water evaporates from the solution the sugar molecules clump on to the string. Sugar molecules are shaped differently . They don't look like salt molecules. It takes millions of them to layer onto the string. It takes a rate of millions of molecules every hour. It would take a day for the crystals to be visible then a week for them to use up all of the sugar. Sugar crystals can not be disturbed while trying to grow or it could take longer to grow. Usually sugar crystals take 3-7 days to form.
Rock candy has been around since the ninth century. Rock candy takes a lot of sugar. Our experiment took 2-3 cups of sugar. It is very sugary but very good to eat.
Results:
Less sugar solution -Yellow
Day 1. No crystals
Day 2. Crystals disturbed,no growth notice.
Day 3. Bigger
Day 4. No change
Day 5. Giant,could tell the growth,the solution lowered. Day 6. Really big growth,clumping around the string and the bull clip
Day 7. Crystals getting thicker,solution has not changed
Regular sugar solution-Blue
Day 1. No crystals
Day 2. Just little crystals
Day 3. No growth
Day 4. The solution lowered,more crystals that the one with less sugar.
Day 5. Could tell the growth of the candy,a lot more crystals.
Day 6. Really bigger,the clip is stuck to the bottom of the jar.
Day 7. Crystals are bigger than day 6, solution has lowered.
Conclusion:
Our hypothesis is correct. To put less sugar, few crystals will grow. We thought the one with three cups of sugar would turn out better and it did because it grew faster and formed more crystals. Our data showed on the second and third day, the rock candy in the blue jar had really good growth. The liquid that made the crystals got lower every time that the crystals grew. The yellow jar started to grow first but the blue jar has more crystals.