All changes in state require energy to be added or taken away true or false

Afamily is one another name for a group on the table of elements.

Predict the products butane (c4h10) + oxygen —>

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.