Which of the following is an anion?
a. o^2-
c. al^3+
d. h

Why do cells appear different in distilled water than they do in 10% salt water?

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?

What is a difference between a mixture of elements and a mixture of compounds