science quiz on some words Flashcards
Equilibrium
When balance is achieved (in nature or when we try to balance things)
Diffusion
movement of molecules ( at least 2 atoms joined together) from a greater concentration to a lesser concentration
Osmosis
The movement of molecules through a semi permeable membrane
Permeable- able to get through
Semi permeable- only some can get through (depends on size)
Physical Change
Change in size, shape or state
Chemical Change
A change in the formula of a substance
Example for physical change
chewing food in your mouth
Example for Diffusion
When you sprayed perfume and spread across the room
Example for equilibrium
when to people are on a seesaw and they both way 100 pounds so they are equal, or with the perfume in the room it stopped spreading since the air and perfume where equal
Example for Osmosis
Pasta and strainer (only some things can get through the strainer which would be water)
Example of chemical change
When you burn paper it turns to ash so it is not paper anymore
