Which of the following statements is true? there are only about 100 different kinds of atoms that combine to form all substances an atom is the smallest particle known to exist a large atom can be photographed with the aid of an ordinary microscope there are thousands of different kinds of atoms that account for a wide variety of substances none of the above

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?

The ability to make things happen is also called a. heat b. force c. matter d. energy

You are a researcher for a golf club manufacturer. you are given two identical looking cubes of a metal alloy. you are informed that they are made of the exact same material, but one is crystalline, whereas the other is amorphous. it is your job to determine which one is amorphous this one is more stress-resistant and is useful in reinforcing golf clubs. which of the following is the best way to determine which is which? a. determine the density of each cube. the more dense one is the amorphous solid. b. melt both cubes and look for a broader range of melting temperatures. the one that melts over a broader range of temperatures is the amorphous solid. c. determine the density of each cube. the less dense cube is the amorphous solid. d. melt both cubes and measure the range of melting temperatures. the one that melts over a narrower range of temperatures is the amorphous solid.