Can i get some ? : d the attraction between two oppositely charged atoms or groups of atoms is which type of bond? hydrogen covalent ionic metallic

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

Displacement is the slope of a velocity vs. time graph a. true b. false