Aplastic ball floats on the water. what do you know about it's density? a. the plastic ball has a density greater than water? b. the plastic ball has a density less than water. c. the water has a density less than the plastic ball. d. the plastic ball and the water have the same density. e. nothing can be determined about the density of the ball.

It A the ball has a less density than the water or it could not float

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.