How would u describe the shape of a big drop of water. Thanks everyone for your help

Acontrol during an experiment. might change remains constant does not exist does change

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles