Which of the following was not used by Alfred Wegener as evidence of continental drift A. Glacial deposits near the equator
B. Mountain ranges in Africa and South America
C. Spreading of the sea floor
D. Fossils found on different continents

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.

The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic

The closer the atoms are to becoming ionic the more highly dense the negatively charged side gets.