Ice-cream in a bag Follow FizzicsEd 150 Science Experiments: Comments 0 You will need: Half a cup of milk. Half a cup of cream. Chocolate or strawberry topping. A medium strong plastic freezer bags 2 Zip-loc bags. Half a cup of salt Crushed ice and a hand towel A mixing bowl A spoon Copyright Instruction 1 Mix the milk, cream and topping in the mixing bowl. 2 Pour the mixture into a Zip-loc bag. 3 Squeeze the air out of the bag and seal it. 4 Place the bag with the mixture into another bag, and seal it again. 5 In the mixing bowl, mix the crushed ice and table salt. 6 Place the Zip-loc bag containing the mixture into a freezer bag. 7 Fill the freezer bag with the crushed ice and salt mixture. 8 Place your sealed bag of cream mixture into the freezer bag with crushed ice and salt. Push out the air and seal the bag. 9 Holding the bag in a hand towel, gently massage or shake the freezer bag to cool the ice cream mixture. Make sure the crushed ice surrounds the inner Zip-loc bag. 10 After about 15 – 20 minutes of gently moving the ice around the bag of cream, your ice cream is ready to eat! 11 Get the Unit of Work on Heat Energy here! What actually is heat? How does heat move through different materials? How does heat change the properties of materials and more! Includes cross-curricular teaching ideas, student quizzes, a sample marking rubric, scope & sequences & more 12 School science visits since 2004! – Curriculum-linked & award-winning incursions. – Over 40 primary & high school programs to choose from. – Designed by experienced educators. – Over 2 million students reached. – Face to face incursions & online programs available. – Early learning centre visits too! 13 Online courses for teachers & parents – Help students learn how science really works Why Does This Happen? Water normally freezes at 0oCelsius, however, adding the salt causes the freezing point of the ice to be lowered. A 10% solution of salt in water lowers the freezing point of water to -6oCelsius, whereas a 20% salt solution lowers the freezing point to -16oCelsius. Saltwater, therefore, needs a lower temperature to become a solid. This means that you end up having ‘supercooled water’ touching the inner bag, which helps to freeze the ice cream inside. Variables to test More on variables here With gloves on, try dry ice instead. Does this work better or worse? Try the experiment without salt. Try pure thickened cream vs adding some water to it. Does this change the texture and freezing time? Learn more! From colour changes to slimy science, we’ve got your kitchen chemistry covered! Get in touch with FizzicsEd to find out how we can work with your class. Chemistry Show Years 3 to 6 Maximum 60 students Science Show (NSW & VIC) 60 minutes Online Class Available Read More Enquire Now Magic Crystal Tree Science Kit $4.95 inc. GST View Details Add to Cart Trustpilot STEM Full Day Accelerator - Primary Designed from real classroom experiences, this modular day helps you create consistently effective science learning that directly address the new curriculum with easily accessible and cost-effective materials. Read More Enquire Now Be Amazing! How to teach science, the way primary kids love. $29.95 inc. GST View Details Add to Cart Trustpilot
Place your sealed bag of cream mixture into the freezer bag with crushed ice and salt. Push out the air and seal the bag.
Holding the bag in a hand towel, gently massage or shake the freezer bag to cool the ice cream mixture. Make sure the crushed ice surrounds the inner Zip-loc bag.
After about 15 – 20 minutes of gently moving the ice around the bag of cream, your ice cream is ready to eat!
Get the Unit of Work on Heat Energy here! What actually is heat? How does heat move through different materials? How does heat change the properties of materials and more! Includes cross-curricular teaching ideas, student quizzes, a sample marking rubric, scope & sequences & more
School science visits since 2004! – Curriculum-linked & award-winning incursions. – Over 40 primary & high school programs to choose from. – Designed by experienced educators. – Over 2 million students reached. – Face to face incursions & online programs available. – Early learning centre visits too!
From colour changes to slimy science, we’ve got your kitchen chemistry covered! Get in touch with FizzicsEd to find out how we can work with your class.
Chemistry Show Years 3 to 6 Maximum 60 students Science Show (NSW & VIC) 60 minutes Online Class Available Read More Enquire Now
STEM Full Day Accelerator - Primary Designed from real classroom experiences, this modular day helps you create consistently effective science learning that directly address the new curriculum with easily accessible and cost-effective materials. Read More Enquire Now
Designed from real classroom experiences, this modular day helps you create consistently effective science learning that directly address the new curriculum with easily accessible and cost-effective materials.
Be Amazing! How to teach science, the way primary kids love. $29.95 inc. GST View Details Add to Cart Trustpilot
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