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Science Project: How to Make Homemade Ice Cream

May 28, 2015

As warmer spring comes rolling in you might be thinking more and more about cooler sweets to eat, namely ice cream. Or maybe you think about ice cream all the time, no matter what the temperature. Regardless, ice cream is definitely one of the most delicious treats you can have, but did you know you don’t only have to buy it at the store? You can make it yourself!

Ice Cream is also a wonderful demonstration of what salt can do to ice. This is when we get science-y.  Hope you’re prepared!

Yum! Ice Cream!Yum! Ice Cream!

Water has three states: solid, liquid and gas. Water changes into its solid state when it reaches 0 degrees Celsius (32 degrees Fahrenheit), but if there is Sodium Chloride (NaCl) present, otherwise known as salt, then that temperature drops. That’s because salt lowers water’s freezing point. Have you ever noticed how when the sidewalk is icy they put salt on it to melt the ice and make it safer for walking? That’s the same principle. The salt they put on the sidewalk mixes with the ice and because it's freezing point is lower than the temperature of the unsalted ice, the sidewalk melts.

When you're making ice cream the lower temperature of the ice and salt mixture, which surrounds the cream and sugar mixture, is cold enough to change the state of the cream from a liquid to a solid, hence the name ice cream! So let's get started!

Materials

  • 1/2 cup milk
  • 1/2 cup whipping cream  or heavy cream
  • 1/4 cup white sugar
  • 1/4 teaspoon vanilla extract
  • 1/2 to 3/4 cup sodium chloride (NaCl) aka table salt or rock salt
  • 2 cups ice
  • 1-quart Ziploc bag
  • 1-gallon Ziploc bag
  • Thermometer
  • Measuring cups and spoons
  • Bowls, cups, spoons or cones to serve your ice cream treat

Gather Your IngredientsGather Your IngredientsCourtesy of Lemonythyme

Procedure

  1. Add 1/4 cup sugar, 1/2 cup milk, 1/2 cup cream, and 1/4 teaspoon vanilla to the quart Ziploc bag. Zip that bag up so nothing leaks!
  2. Put the 2 cups of ice into the gallon Ziploc bag.
  3. Use the thermometer to measure the temperature of the ice in the gallon Ziploc bag. Make sure to record this number so you can record
  4. Add 1/2 to 3/4 cup salt (sodium chloride) to the gallon Ziploc bag of ice.
  5. Place the sealed quart bag inside the gallon bag of ice and salt. Seal the gallon bag securely.
  6. Rock the gallon bag from side to side. Hold it at the seal so that the cold ice doesn’t freeze your hands instead of your ice cream. You can also use gloves or a cloth to protect your hands, just remember it will be colder than 0 degrees Celsius!
  7. Continue to rock the bag for 10-15 minutes or until the contents of the quart bag have solidified, or until you can’t wait for ice cream anymore.
  8. Open the gallon bag and use the thermometer to measure and record the temperature of the ice and salt mixture. Notice how much colder it is than the ice on its own.
  9. In bowls or cones serve and most importantly enjoy your homemade ice cream!

Ice Cream made in a bag!Ice Cream made in a bag!

Toppings

There’s always the possibility to add all different types of toppings: chocolate sauce, sprinkles, caramel, strawberries, chocolate chips! Feel free to add these ingredients to the quart bag before you mix everything, but know that your mixture will turn to ice cream much faster if you hold these special treats and add them as toppings.

What is your favorite topping?What is your favorite topping?Courtesy of Joyofkosher

Ice Cream Maker

This is a very easy way to make some delicious ice cream! If you are interested in making your own homemade ice cream all the time you may want to look into an ice cream maker. It still uses the ice and salt mixture to freeze the cream it just provides an easier and higher volume way to make ice cream at home.

Have Your Say!

What’s your favorite ice cream flavor? Share it with us in our comments section below.

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Where Was Ice Cream Invented?

  • United States.
  • France.
  • China.
  • Iceland.

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simran88
simran88 posted in Say Anything:
@AlphaT  You've posted on behalf of everyone else. In their style. XD Now no one needs to post. God bless you for ending a thread in which everyone would post the same opinion and say the same thing. XD
reply about 6 hours
ThePaleWalker636
I found the greatest riddle ever (credits to Ted-Ed), and I want to see if anyone can solve it without looking up the answer. THE RIDDLE OF THE ALIEN OVERLORDS. You and your team have crashed-landed on an ancient planet. The only way off is to appease its three alien overlords, TEE, EFF, and ARR, by giving them the correct artifacts. Unfortunately, you don't know who is who. From an inscription, you learn that you may ask three yes or no questions, each addresses to any one lord. Tee's answers are always true. Eff's answers are always false.  And Arr's answers are random. But, there's a problem. You've deciphered the language enough to ask any question, but you don't know which of the two words 'ozo' and 'ulu' means yes, and which means no. How can you still figure out which alien is which?
reply about 7 hours
CRCardinal
Fear: The Emotion of Death   You can't see me, But I'm there. I'm in your tears, I'm everywhere. I stalk you in your shadow, So stealthy and no slack. I'm made of dark matter, You better watch your back. You can hear me, I'm your beating heart. Inside is emptiness, Tearing you apart. You shiver and shake, At the sound of my name. I engulf you, drown you, Surround you with shame.   I've seen destruction, More than anyone. I'm darker than, The world with no sun. The agony arises, There's so much red. Most of it coming, From the dead. I become your shadow, I'm a terrible sight. And when you see me, You're frozen with fright. I'll grab you by your neck, You'll be thrashing around. You're crying, shrieking, Until there's no sound.   I feel so sad, So empty, so. . . Alone. So you'll feel the same, You'll be on your own. And as long as you are with me, At the point of no return. You will go crazy. You'll crash and burn.   Then you understand, With your slowing of breath. That I am Fear, The Emotion of Death.
reply about 9 hours
XxRuby_PhoenixxX
[Warning: Boring]     It all started on one night where I was doing a quiz on Playbuzz. They were fun, but my mom thought they were inappropriate. Searching the web, she found this site and saw it had quizzes on it. They weren't that fun, honestly. And this site? It was kidzworld. I forced her to let me make an account, and we did. No status. No bio. No mood. No picture. I swore to not go in chatroom or chat with people, because apparently they could be an old man in a basement. I nodded in agreement, saying that she could trust me. Of course, I did some quizzes and went off. That night, we went to bed of course. Now major time skip.    It's, let's say, three nights later. About midnight, and my iPod is next to me. I decided to go and check out "kids world". Clicking into "login", I guessed my password since I really forgot it. Score! Got it right. Anyways, I look around. Forums. Quizzes. Games. And then something spotted my eye.  Chatroom.  Clicking on it, I typed in these exact words.  "Hello?" And that's how my journey started. A few days later, maybe a week, I was introduced to the "boards". Clicking on it, I immediately saw the Roleplay section. Unknowing what it was, I created "Lemini The Witch" and got into an argument with someone who I will not name((*Cough* Gpc78 )). Anyways, I deleted the post. My first Roleplay I made was Crystal Heights. Noobish, stupid, horrible. But surprisingly, people joined. This is where my soon-to-be-best- friend, Ivy, entered my virtual life. And my other best friends. first message: "Are you going to post? We're waiting for you two lovebirds! ;)". Conversation continued. And continued. Our bond grew and grew, until we had reached 100 pages of private messages. 100. Pages. I couldn't believe it at first. 100 pages of messages with my soon-to-be-best-friend. As most of you know, a few months ago, I created several hundred opportunities for advanced roleplayers who were not acknowledged to go through the gates of Roleplaying Heaven. Including me. I helped them by creating the Top Ten Roleplayers, and "accidently" tagging every single advanced Roleplayer. Even Musicgenius showed up. This is a process in the soon to be made   "Roleplaying Council", which I am a part of. During this, me and Ivy were nearing 300 pages of private messages. Crystal Heights was over, but my life was going uphill, closer to opportunity. Even in real life, my hopes were flying closer to the clouds. A few months after this, my faith in the Lord started to fade. I am 10, I started to realize the true meaning of the Bible and what it's message was. I was stuck in the middle of what seemed like a tornado, being swept over to one side, but then jerked back to the other, while being hurt in the progress. I was tearing myself apart. That's went the tornado stopped. It was just rain. I was closer to finding out my true religion. And that was atheism. I felt like I had to have a religion, like something had to have created the universe. My heart was leaning towards Christianity, but my mind was going to atheism. Go with your mind, not your heart, was my instinct. Me and Ivy were nearing 500 pages of private messages. Little did we know that I would be deleting my account and coming back as Ruby Phoenix. As the days passed, my hatred for my user grew. I finally decided to message Jordan that "Please delete my account". I don't know if it was a good thing or bad mistake I did that, but it's too late now. After this,  I felt like my roleplaying creativity was fading away. My titles weren't original like my old ones. I had changed a lot.  And I mean a lot.  On Animal Jam, I was afraid of deleting a buddy. Now I do it without hesitation. I don't cry as much. Like a shell has grown around my emotions. Thanks to the internet, I've grown tougher.  A few months later, my days were, and are, gloomier. I was, and still am, always stressed about tomorrow. If I have too much work. If I can't do things right. If I mess up. If I do anything wrong. I am confused. Why am I here? Where do we go after we die? Why didn't I just continue to not exist? What is my purpose? What's my religion? So many questions for a 10 year old in my fizzing, overloading mind.    I just wanted to share this, just to. 
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ScoobysFriend
Listen closely.
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