Science Stars: 1
st
Grade Lesson Plan
States of Matter: Making Ice Cream
Standards:
1.a. Students know solids, liquids, and gases have different properties.
b. Students know the properties of substances can change when the substances are mixed,
cooled, or heated.
Suggested time allotment: 45 minutes
Anticipatory Set (Engage):
Can matter change from one state to another? What would happen if I put this water on the
stove? What would happen to the water? What if I put it in the freezer? What state of matter
would it be in? Can we change the state of matter by mixing them together? Let’s experiment
and find out.
Objective:
Review states of matter.
To experiment with solids and liquids to create a new (and yummy!) mixture.
Background:
Different objects (types of matter) can be mixed together. A mixture is two or more things put
together – like salads, soups, cakes, etc. Some mixtures can be easily separated – like picking
the tomatoes out of your salad. Some mixtures are hard to separate – like separating the
chocolate from your chocolate milk. When a solid (like chocolate powder) completely mixes
with a liquid (like milk), we say that the solid has completely dissolved into the liquid.
Some objects can be mixed together to create something completely new. We can use a solid
and a liquid to create a gas (like the air we breathe – CO
2
) or we can use different liquids to
create a solid. If we change the temperature of some objects, we can create something
completely new like ice cream. Heating an object can evaporate it (if it’s a liquid) or melt it (if
it’s a solid). By cooling or taking heat away from a liquid, we can freeze it or turn the liquid into
a solid, like ice cream!
Materials:
Spoons
Paper towels
Half & half cream
Sugar
Vanilla Extract
Quart Ziploc bags
Coffee Cans
Ice
Salt
Measuring cups
Measuring spoons
Changing Matter Worksheet
Prep:
· Make sure no one is allergic to the ingredients.
· Each student (or group) will make their own bag of ice cream; therefore,
ingredients need to be measured and prepared ahead of time.
· Each student )group will receive:
o ½ cup cream
o 1 tbsp sugar
o 1 tsp vanilla extract
o 1 quart Ziploc bag
o Coffee can filled with 2
cups ice
o ¼ cup salt
o 1 spoon
Vocabulary:
· Solid
· Liquid
· Gas
· Matter
· Observation
· Mixture
Modeling:
Review the terms matter. Have students give examples of each type of matter using the
terms solid, liquid, and gas. Explain that, in this lesson, we will take the different states
of matter we learned about and combine them to make something new –ice cream!
Guided Practice:
· Set out ingredients to make ice cream: cream, sugar, vanilla, ice and salt.
· Have students describe each ingredient as a solid, liquid, or gas.
· For each ingredient, have students complete a box on the Creating Matter
worksheets.
Modeling:
Demonstrate how to combine the ingredients and set of the experiment. Once all students
have materials, help them tightly close the bag to avoid spills.
Guided Practice:
· Mix ½ cup cream, 1 tbsp sugar and 1 tsp vanilla into a small Ziploc bag.
· Squeeze out extra air and zip the bag closed. Set this bag aside.
· Add ¼ cup salt to coffee can filled with ice.
· Place small bag inside the coffee can and seal the can tightly.
· Shake the can for 10 minutes.
· Remove the small bag and observe whether the ice cream is a solid or a liquid.
· Open the small bag and use the spoon to enjoy the ice cream!
Check for understanding:
What state of matter is ice cream? (solid) What did we use to make it? (milk and vanilla –
liquids and sugar and ice – a solid) What did we take away to change from liquid to
solid? (took away heat with ice)
Cold, slippery, wet
Small, like sand, hard
Tastes good, white
Clear, square
Wet, cold, white
Tasty
Smells good, brown
Yummy! White, small
Looks like salt
