Describe at least three differences between a sealed bottle of water (H2O) and another sealed bottle containing hydrogen and oxygen (H2 and O2). Both bottles are at room temperature. (hint: Think through your classification of matter chart and your states of matter chart). (3 points) Format your answer by creating a chart similar to the one below.   You do not need to write in complete sentences. Difference  Bottle of Water (H2O)                               Bottle of Hydrogen & Oxygen (H2 and O2)                    (1) (1) (2) (2) (3) (3)

EXTRA CREDIT–From Revell Textbook: a) What type of tree was the source of the drug named Taxol?  b) What does the drug Taxol do in the body?  c) What was the problem with extracting Taxol for use as a drug from trees? d) What was one of the ways that this problem was overcome?

Determine whether the following statement is TRUE OR FALSE: Vaporization is the general term for a gas changing to a liquid.

Referring to the figure below: What point in the graph is the phase change of melting occurring?  

Determine whether the following statement is TRUE OR FALSE: Gases have the greatest spacing between particles.

Which of the following statements is FALSE about energy changes?

Referring to the figure below: What is the boiling point of the unknown substance?

Identify the following as an element, compound, homogeneous mixture, or heterogeneous mixture: plaster= calcium sulfate (CaSO4)

Determine whether the following statement is TRUE OR FALSE: Particles in the solid state do not have any motion at room temperature.

Identify the following as a metal, nonmetal or semimetal/metalloid: lithium (Li)