Author Question: For which of the following can the composition vary? A) pure substance B) element C) both ... (Read 32 times)

tingc95 · **on:** Aug 27, 2018

For which of the following can the composition vary?

A) pure substance
B) element
C) both homogeneous and heterogeneous mixtures
D) homogeneous mixture
E) heterogeneous mixture

Question 2

Identify which one was NOT a malfunction at a nuclear power plant.

A) A tornado tore a roof of the cooling plant resulting in a release of radioactive gas.
B) A partial meltdown of the core occurred.
C) A fire resulted in the release of radioactivity into the surrounding area.
D) An earthquake caused a tsunami, and flooded the nuclear plant. The cooling system failed, a partial core meltdown occurred, and radioactive material was released.