Describe how the amount of air changes as you travel up through Earth's atmosphere

Why are outer electrons of some substances able to be removed by friction?

What energy form is a bow and arrow?

Which substance is a binary compound? A. Barium B. Beryllium C. Carbon dioxide D. Calcium Hydroxide

Why does every chemical reaction require a certain amount of activation energy? OA. Energy is released when the reactants begin to react. OB. Energy lost to the environment during the reaction must be replaced. O C.

If there are 10.0 g of sucrose and 8.0 g of oxygen, how many moles of sucrose are available for this reaction? A.) 0.029 mol B.) 0.250 mol C.) 0.351 mol D.) 3.00 mol

Which radiation detection device is the best to use for measuring the presence of radiation in large moving objects where constant monitoring is impossible? film badge Geiger counter cloud chamber scintillation counter

Smoke fiilling up a room is diffusion or not

What is the independent and dependent variable for a dry ice experiment

a substance that undergoes a physical change like melting is still the same substance is it true or false

What is a polar molecule