Which of the following is a physical change? a. sodium metal explodes on contact with water.
b. iron is oxidized to iron oxide.
c. copper reacts with a strong acid.
d. aluminum metal is pounded into think sheets.

Whats one way that rocks do not follow the typical rock cycle pathway?

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d

Which of the following statements is true of cells