Answer: Nucleus of an atom is heavy and positively charged because nucleus is only made up of protons and neutrons.
Tin is classified as a metal in family 14.
Answer:
I dont know the first blank but I know the second one is groups and the last one is periods.
Sun spots- dark circles on the sun’s surface that I believe are areas of cooler temperatures.
Solar flares- arcs of fire that leap from the sun’s surface. Nothing special, they’re a daily roumaine for the sun
heat is transferred from your hand to the ice cube
