Physical or Chemical Changes (All Play!)
Melanie is discovering that after baking a cake, she cannot take the egg back out. What type of change happened?
Chemical Change
A change of matter, but not changing the type of matter
Physical Change
What change will occur when you work with the clay?
Physical change.
What is the name of our favorite science video program?
Mystery Science or Generation Genius
Alyson rips her science homework into a million tiny pieces. What type of change is this?
Physical change
You notice there is a great deal of rusting occurring outside on the playground slide. What type of change is this?
Chemical Change
What new substance filled up the plastic bag when baking soda was combined with vinegar?
A gas filled the bag, carbon dioxide.
Hunter takes water...he boils it, he freezes it, and he melts it back to liquid. What type of change occurred?
Physical Change
What kind of change is it when an entirely new substance is formed?
Chemical Change
Why can't you see any bits of sugar in a sugar/water solution?
You couldn't see any bits of sugar because the particles are too small to be seen.
This weak/strong substance can burn, change color, and have a sour taste.
Acid!
Ms. Gonzalez is drinking her coffee. She stirs to dissolve the sugar into it. What type of change is this?
Physical Change (the sugar might disappear temporarily but it will sink to the bottom eventually!)
What are the different states of matter?
liquid, solid, gas
What kind of change would occur with mixing baking soda and water?
Physical change.
Who were the alchemists?
The alchemists were "scientists" who experimented with mixing different substances together, trying to create different potions.
Grayson was in a rush this morning, and burnt his toast for breakfast. Is this a physical or chemical change?
Burning toast is a chemical change! Although the change is on the outside, the bread can never be changed back to regular bread.
Give an example of a chemical change
spoiled milk, burnt toast, oxidized penny, rusty rake
What kind of change occurs to steel, such as a rake, that is left out in the rain?
Chemical change; rusting
Explain what it means when a substance is "reactive."
When a substance shows some sort of change when combined with another substance. These changes can be bubbling, fizzing, or even an explosion.