As a family eats dinner, they decide to try to classify the matter around them. Which categories could the family use for classifying matter? (select all that apply)
•solids, liquids, and gases
•elements, compunds, and mixtures
•living things and no living things

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?

How is the shape of the poem “peer” connected to its meaning?

Will a solution form when the solvent and solute are both nonpolar? a. not likely b. never c. most likely