Which statement is true about compounds? a. They always have the same chemical
formula.
c. They never have the same chemical
formula.
b. They all conduct electricity. d. None of the above.

the assestment will probley apele with cause and effect

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y