Even when an object appears to be at rest, its atoms and molecules are in constant motion A. true

B. false

(6th-grade science please help)​

Endeleev saw trends in the physical and chemical properties of elements when he organized them by

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.

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al oxidizing agent = reducing agent =