Select the correct statement or statements about compounds and molecules:

question 1 options

a. compound is made of just one type of element

b. compounds don't act like their elements; compounds act like a different substance.

c. molecule is two or more atoms bonded together

d. molecule can be made of one type of element or a mixture of elements.

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.

i believe the answer is three water molecules

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.