You find a rock that is very sandy and grainy. sand grains fall off as you handle it. what kind of rock do you suppose it is?

Of the groups of elements below, which are most likely to gain electrons to become anions? a. alkali metal b. boron group c. halogen d. transition metal

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?