Classify the following statement as a prediction, observation, theory, 
or law. Please be sure to classify the statement exactly as it is 
written! A helium filled balloon floats.

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

Which describes fat? a: a carbohydrate that produces energy b: a nucleic acid that directs cell function c: a lipid that stores energy d: a protein that speeds up a chemical reaction