2. Which type of solution below has a cloudy appearance? (Choose all that apply)

A) Alloys

B) Solutions

C) Colloids

D) Suspensions

4. What is the difference between a primitive and body centered unit cell?

Iknow #2 is d. i just need to know why

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6