1 point A student is classifying a group of unknown solids by whether or not they float or sink in water.

Which property is the student using to classify the solids?

mass

solubility

density

melting point

An occluded front moves over the farmland that has been experiencing drought conditions. what change in weather will this front likely bring? a. gray skies, but no rain b. an extended period of rain c. more dry air and sunny skies d. violent, short-lived thunderstorms

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.