Chemical vs Physical
Cutting your hair is a physical or chemical change?
Physical Change
Freezing is...
What temperature? Which phase change?
Freezing involves cold temperatures and is when a liquid changes to a solid.
What are the three main parts of an atom?
Proton, Electron, Nuetron
What do molecules look like in a solid?
Do you ever leave the path when you are visiting Yellowstone?
NEVER
Is burning wood in a campfire a physical or chemical change?
Chemical
What do molecules look like in gas?
Freely moving around, fast, lots of space
What are the charges of the three main parts of an atom?
Proton = Positive, Neutron = No charge, Electron = Negative
Melting is...
What temperature? Which phase change?
Melting involves warm temperatures and is when a solid changes to a liquid.
Name something you like about each person in the room, including yourself.
YOU ARE ALL AWESOME!
Is baking cookies a physical or chemical change?
Chemical
Boiling is...
What temperature? Which phase change?
Boiling involves hot temperatures and is when a liquid changes to a gas.
What is the center of an atom called? Which two main parts are found there?
Nucleus, made up of protons and neutrons
What do molecules look like in a liquid?
Close together but space in between them, can move around but not much
Tell me an example of condensation and an example of evaporation!
Water on a soda or water bottle, water on the windows, water turning into clouds, steam rising from a pot, steam rising from a hot spring or field
Physical
Tell me what happens to molecules when they are heated up!
They expand and begin moving around faster!
What is a molecule? Can you name one?
A group of atoms, H20/water
Condensation is...
What temperature? Which phase change?
Condensation involves cold temperatures and is when a gas changes to a liquid.
Give me an example of a physical change and an example of a chemical change.
.
Tell me the difference between a chemical and physical change.
Physical changes can be reversed and it is still the same physically. A chemical change cannot be reversed and is changed chemically.
Evaporation is...
What temperature? Which phase change?
Evaporation involves warm temperatures and is when a liquid changes to a gas.
How many protons, neutrons, and electrons does Oxygen have?
Tell me what happens to molecules when they are cooled down.
They slow down and begin to reconnect to each other, move closer together, contract
What is sublimation? - Temperature and Phase change.
(Think Sub Zero Ice Cream)
Sublimation usually involves cold temperatures and is the phase change of solid to gas!