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Upcoming Museum Events:

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September 10	Pete Dunne's Bird Watching Perspective at KNC 7:00-8:00 pm
September 11	Breakfast, Birds, and Banding Pete Dunne at KNC 8:00-10:00 am
September 14	Winter Hours begin: museum opens at 11:00 a.m.
September 25 (tentative)	Smithsonian Magazine's Museum Day, free admission
	Full calendar...

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Make your own ice cream! 

Do you like ice cream? Have you ever wondered how it’s made?  In this simple experiment you will learn how to quickly and easily make ice cream at home.

Tips

• Before you start, read the whole experiment.
• Ask an adult to help.
• Use freezer bags because they are stronger than regular Ziploc bags. A stronger bag will reduce the likelihood of tearing the bag and creating a mess.
• Don’t read “What happens and why” until you’ve completed the experiment.

What you need:

• ½ cup milk
• ½ teaspoon vanilla
• 1 tablespoon sugar
• 4 cups crushed ice
• 4 tablespoons salt
• 2 quart size, Ziploc bags
• 1 gallon size, Ziploc freezer bag
• Hand towel or gloves to protect hands

What to do:

• Mix milk, sugar, and vanilla together in one of the quart size bags. Remove as much air as possible and seal the bag tightly.
• Seal the second quart size bag around the bag containing the mixture. Again, seal tightly and remove as much air as possible.
• Place the double-bagged mixture inside the gallon bag.
• Fill the gallon bag with ice.
• Sprinkle salt over the ice. Remove air from bag and seal tightly.
• Wrap the bag in a towel or put gloves on to protect your hands from the cold bag.
• Shake and massage the bag. It is important to keep the cream mixture surrounded by ice. Keep this up for approximately 8 minutes.
• Remove the smaller bags from the ice solution, unseal bags, and enjoy your homemade ice cream.

Don’t Read This Section Until You Have Completed Your Experiment!

What happens and why: 

The salt in the gallon bag with the ice causes the ice to melt. The salt lowers the freezing point of the ice. A 10% salt solution lowers the freezing point from 32 degrees Fahrenheit to 20 degrees Fahrenheit and a 20% salt solution lowers it to 2 degrees Fahrenheit. By lowering the freezing point of the ice solution, we create an environment for the cream solution to freeze quickly at a temperature lower than 32 degrees.

 
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The mission of Kingman Museum is to provide lifelong learning opportunities in natural history, the universe, and world cultures for all ages for all time.
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Kingman Museum
175 Limit Street
Battle Creek, MI 49037
Phone: (269) 965-5117 ~ Fax: (269) 965-3330
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