Is a gummy worm increased by two inches a qualitative or quantitative

What are the charges of the subatomic particles by choosing the answer from the drop down menu. protons have a (+1,0,or-1). (protons,neutrons,electrons) have a 0 charge. 3.) electrons have a (+1,0,-1)

Compare and contrast physical changes with chemical changes.

Identify the electromagnets with poles that are reversed from the electromagnet shown above