Suppose element X is a poor conductor of electricity and breaks when hit with a hammer. Element Z is a good conductor of electricity and heat. In what area of the periodic table does each element most likely belong?

Compare the physical properties of metals, non-metals, metalloids, and noble gases, and describe where in the periodic table each of these kinds of elements is located.

Use the periodic table to identify the group numbers and period numbers of the following elements: a. carbon, C b. argon, Ar c. chromium, Cr d. barium, Ba

Identify the reactants and products in the following reaction: Potassium + water → Potassium hydroxide + hydrogen

Use the periodic table to write the names for the following elements: O, S, Cu, Ag.

Identify each of the following as either a physical change or a chemical change. Explain your answers. a. A piece of wood is sawed in half. b. Milk turns sour. c. Melted butter solidifies in the refrigerator.

If the analysis-of-variance F-test leads to the conclusion that at least one of the model parameters is nonzero, can you conclude that the model is the best predictor for the dependent variable y ? Can you conclude that all of the terms in the model are important in predicting y ? What is the appropriate conclusion?

Locate a video of a campaign advertisement from the most recent presidential election on the Internet. Describe the image it creates of the candidate or opponent. Analyze how the elements of the ad contribute to this image. Present the ad video and your analysis to the class.

Name each of the following binary compounds, using the periodic table to determine whether the compound is likely to be ionic (containing a metal and a nonmetal) or nonionic (containing only nonmetals).

c. $\text{PH}_3$

Using only a periodic table as a guide, arrange the following atoms in order of decreasing electronegativity: $\mathrm{In} \quad \mathrm{Se} \quad \mathrm{Sb} \quad \mathrm{Cl} \quad \mathrm{S}$

Mendeleev arranged the periodic table in order of increasing atomic masses. Locate iodine and tellurium on the table and note that they are not arranged by increasing mass, and yet Mendeleev placed iodine in Group 17 and tellurium in Group 16. What is the likely reason that he did not arrange them by increasing mass?

Suppose that f is periodic with period T and differentiable. Show that f' is also periodic with period T.

A manufacturer's total cost is

$$C(q)=0.1 q^{3}-5 q^{2}+500 q+200$$

dollars, where q is the number of units produced. (a.) Use marginal analysis to estimate the cost of manufacturing the 4th unit. (b.) Compute the actual cost of manufacturing the 4th unit.

Name an element in the third period (row) of the periodic table with the following: a. three valence electrons b. four 3p electrons, c. six 3p electrons, d. two 3s electrons and no 3p electrons.