Physical And Chemical Changes
Scenario
Lexie attempts to bake a cake and she mixes up all of her ingredients, what is this called?
What is a mixture?
What is the purpose of the mitochondria?
What is the powerhouse of the cell?
What is a magnet that you can turn on and off called?
What is an electromagnet?
Scenario:
You take a battery and a wire to make a circuit, what is missing to make this a complete and closed circuit?
What is a lightbulb?
What is an animal called that has a backbone?
What is a vertebrate?
You leave your metal bike outside in the hot sun for a week, when you go back outside and see that it has tarnished, or rusted, what is this called?
What is a chemical change?
What is the purpose of the Nucleus?
What is the brain of the cell?
Every magnet has two poles. What are they called?
What are the North and South poles?
What is the difference between naturally occurring static electricity and the electricity used to power a home?
Static electricity is the buildup of charged particles in one place (like lightning or a shock from a rug), while human-harnessed (current) electricity is the steady flow of charges through a conductor.
What is an animal that doesn't have a backbone called?
What is an invertebrate?
You leave a glass of ice outside on a table, and later you come back to take it back in. You notice that the ice has melted and turned into a liquid. What is this called?
What is a physical change?
What 2 Organelles are only found in the plant cell?
A. Chloroplast and Cell Wall.
B. Cell Wall and Cell membrane.
What is A. Chloroplast and Cell Wall?
What happens when you try to push the North pole of one magnet against the North pole of another?
They repel (push each other away).
If two objects have the same electrical charge, what will they do when brought near each other? (Hint: this is just like if two of the same magnetic poles hit each other!)
They will repel each other
Why are whales and dolphins classified as mammals instead of fish?
They breathe air with lungs, give live birth, and produce milk for their young.
If you mix salt into water and it "disappears," why is this considered a physical change?
Because the salt and water are just a mixture (specifically a solution). You can get the salt back by evaporating the water.
What is the thin, flexible outer layer that controls what enters and leaves the cell?
What is the invisible area around a magnet where it can pull or push other objects?
What is the magnetic field?
What does a switch do in a circuit?
It opens or closes the circuit to stop or allow the flow of electricity
Is a dog sitting on command an inherited trait or a learned behavior?
What is a learned behavior?
Are melting, freezing, and boiling considered physical or chemical changes
Physical changes. They are changes in the state of matter, but the molecules of the substance stay the same
What is the large, sac-like organelle used for storing water, food, and waste? (Hint: It’s much bigger in plant cells!)
What is the vacuole? (Its like a big vacuum)
Are all metals magnetic?
No. While metals like iron, nickel, and cobalt are magnetic, others like aluminum, copper, and gold are not.
In a series circuit, what happens if one light bulb burns out?
All the other bulbs will go out because there is only one path for the electricity to follow.
A penguin spends most of its time swimming in the cold ocean. Why is it still classified as a bird?
It has feathers, lays eggs, and is warm-blooded.