Which of the following materials are minerals, and why (or why not) ?

water

beach sand

diamond

wood

vitamin pill

gold nugget

fishbone

emerald

What are the two ways in which pressure can be increased?

Which of these statements about enzymes is NOT true? - If enough substrate is added, the normal Vmax of a reaction can be attained even in the presence of a competitive inhibitor.

Identify the type of reaction shown by this chemical equation: 2AI + 6HCI - 2AlCl3 + 3H2

Which of the following is the best definition of a mineral? a naturally occurring liquid that can be used to make oil a crystalline solid that occurs naturally on Earth a substance made from raw materials a material that people make for some purpose

Which is the correct chemical equation for the following statement? "Sodium reacts with oxygen in a 2 to 1 ratio to produce sodium oxide." 4Na + 2O2 → 2Na2O + O2 Na2O → 2 Na + O2 Na2 + O2 → 2 NaO Na2O + O2 → 2 Na

To what chemical reaction class does this reaction belong? 2 mg (s) + o2 (g) 2 mgo (s)

Which best illustrates how particle arrangement changes when solids change into liquids

Express in scientific notation (6.0x10^4) (3.1x10^-1)

How do you measure the mass of a liquid?

Given the following information, calculate the mass for B-11. B-10 has a natural abundance of 19.9 percent, while B-11 has a natural abundance of 80.1 percent. The mass of B-10 is 10.013 amu.