How many electrons are in the outermost energy shell of a calcium atom?

What color does cobalt-oxide produce? a. blue-violet b. red c. yellow d. green?

What elements on the periodic table are most likely to form covalent compounds?

Which of the following is not true regarding a properly written chemical reaction

Air bags are activated when a severe impact causes a steel ball to compress a spring and electrically ignite a detonator cap.

What is the value of x in the equation below?

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.