Laurie buys four bags of candy with 10 pieces in them, Her Dad gives her 5 more pieces of candy. Laurie wants to give candy to her six friends, How much candy is left over?

There will be no candy left because Laurie will give each friend 10 pieces of candy each

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.