If you were to look at grains of table salt (sodium chloride, nacl) with a magnifying glass, you would see that each grain is a little cube. Why are salt grains cubical?.

Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together