True or False - when setting up your conversion problems every numerical value must have a unit on it.

What are the causes of the Earth's climate changes and people's management of these effect changes? (Compile a list of smaller questions that you must answer in order to get to that unit challenge)

Which consequence of global warming is described as having an increase in growing season changes in migration and loss of species

Which type of element typically loses an electron to become an ion? a. gas b. metal c. nonmetal d. semimetal

Who wrote the first modern chemical textbook? Antoine Lavoisier Dmitri Mendeleev Henry Moseley Johann Dobereiner

Which is more acidic, 3-nitrophenol or 2-nitrophenol and why? Which is more basic, benzyl amine or aniline and why? Which is more basic, triethylamine or diethylamine and why?

Which of the following is a possible equivalence that can be used in a conversion? A. ten to the negative second power hL over one L B. ten to the negative second power cL over one L C. ten to the first power L over one daL D.

Which process is a chemical change? burning a match boiling water melting ice breaking glass

What form of matter is "vapor"? a. a solid made of a substance that is usually liquid c. a gas made of a substance that is usually solid b. a liquid made of a substance that is usually gas d. a gas made of a substance that is usually liquid

Which of the following atoms releases more energy than oxygen when an electron is added to its valence energy level? Select one: a. helium (He) b. fluorine (F) c. carbon (C) d. nitrogen (N)

End-users of natural gas include (check all that apply) :