Which of these is a chemical property?
a. boiling point
b. flammability
c. density
d. solubility

Which statement describes covalent bases? they have hydroxide ions. they produce hydrogen ions. they are often amines. they are named the same as ionic compounds.

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?

Which of the following is true about the speed of light? it depends on the wavelength.