Chemical and Physical Changes
Quiz by Todd Lichtenwalter
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Amanda wants to make a cake. She measures sugar, eggs, oil, flour, and flavorings. She mixes the ingredients together with a whisk. She pours the ingredients into a pan and bakes them. When the cake is baked, she frosts the cake. Question: Which part of making a cake is a chemical change?
29Adding eggs because the eggs change shape when they are cracked.
Baking the mixed ingredients because the ingredients change into a different substance.
Putting frosting on the baked cake because frosting changes how the cake looks.
Mixing ingredients with a whisk, because the mixed ingredients form a thick liquid.
- Q1
Amanda wants to make a cake. She measures sugar, eggs, oil, flour, and flavorings. She mixes the ingredients together with a whisk. She pours the ingredients into a pan and bakes them. When the cake is baked, she frosts the cake. Question: Which part of making a cake is a chemical change?
Adding eggs because the eggs change shape when they are cracked.
Baking the mixed ingredients because the ingredients change into a different substance.
Putting frosting on the baked cake because frosting changes how the cake looks.
Mixing ingredients with a whisk, because the mixed ingredients form a thick liquid.
60sSCI.7.6C - Q2
Look at the image of a melting popsicle. Question: Which of the following best explains what happens when a popsicle melts?
It is a physical change because it can be easily reversed.
It is a physical change because a new substance was made.
It was a chemical change because it cannot be easily reversed.
It is a chemical change because the properties of the popsicle changed.
30sSCI.7.6C - Q3
What is the difference between a chemical change and a physical change?
After a physical change, a substance cannot change back, but it is easy to reverse a chemical change.
A physical change includes changing state from solid to liquid, but changing from liquid to gas is a chemical change.
A new substance is formed in a chemical change, but the substance stays the same in a physical change.
A substance stays the same in a chemical change, but a new substance is formed in a physical change.
30sSCI.7.6C - Q4
Look at the image showing how to make fruit punch. Question: When you make a pitcher of fruit punch from a powdered packet of drink mix, the water changes color. Is this a physical or chemical change? Explain why.
Users enter free textType an Answer120sSCI.7.6C - Q5
Describe four different pieces of evidence that indicate a chemical change has occurred.
Users enter free textType an Answer30sSCI.7.6C - Q6
Read each of the statements describing a change: Using a magnet to remove iron shavings from a mixture of sand and iron 2. Melting sugar 3. Lighting fireworks and then seeing the colors and hearing the sound pops as they go off 4. Cutting a piece of paper into smaller pieces 5. Burning firewood in a campfire ....Question: Which of these examples describe physical changes?
1 and 4
1, 3, 4, and 5
2, 4, and 5
1, 2, and 4
30sSCI.7.6C - Q730s
