Katie claims that steel is a homogeneous mixture, even though it looks like a pure substance. Which statement, if true, would support her claim?
A. Steel contains only iron atoms.
B. Steel is made from iron atoms with clumps of carbon atoms
mixed in.
C. Steel contains carbon and iron atoms, evenly mixed.
D. Steel is made of different compounds distributed unevenly.

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d