3.
Compounds are created when atoms of different elements
have different chemical properties
O form physical bonds
form chemical bonds
have similar chemical properties

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?

In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j