1. What determines which elements combine and how they bond together?

2. Potassium is a metal with one valence electron. With which other elements does it form bonds?
A. elements with one electron
B. elements with two electrons
C. elements with five electrons
D. elements with seven electrons

3. Which type of bonds does potassium form? Which type of bond is most common?

4. Describe a covalent bond and how it forms. Give an example of a compound with covalent bonds.

5. Compare and contrast polar and nonpolar covalent bonds.

6. What is an ionic bond? How does it form? Give an example of a compound with ionic bonds

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

Which of the following electromagnetic waves can create ions?

These questions are based on the attached photo. the experiment is about burning magnesium metal with oxygen. 1. write the balanced chemical equation for the reaction you are performing. 2. calculate the mass of magnesium metal used in each trial. o trial 1: o trial 2: 3. calculate the actual yield of magnesium oxide for each trial. o trial 1: o trial 2: 4. magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. o trial 1: o trial 2: 5. determine the percent yield of mgo for your experiment for each trial. o trial 1: o trial 2: 6. determine the average percent yield of mgo for the two trials. your company currently uses a process with a similar cost of materials that has an average percent yield of 91 percent. if the average percent yield of this process is higher than that, this could save the company money. what is your recommendation to the company? support your recommendation using your data, calculations, and understanding of stoichiometry gathered from this lab.