Me in order to be considered science, concepts must be select one: a. testable and obvious. b. believable and trustworthy. c. testable and observable. d. functional and observable.

What do the atoms of elements in the same group have in common? a. they have the same atomic numbers. b. they have the same average atomic masses. c. they have the same number of electron shells. d. they have the same number of electrons in their outermost shells.

Aseries circuit has a battery and resistor and a light bulb with a power of 3.0 w if the current in the circuit is 0.90 a over a period of 20 seconds what is the voltage across a lightbulb

Every acid has__ atoms oxygen chlorine hydrogen sulfur