What type of compound is formed when electrons are shared between atoms?

Which of the following elements is most likely to form an ionic bond with chlorine?

What is the name given to the force of attraction that holds ions together?

What is the chemical formula for water?

What is the percentage of hydrogen by mass in water (H2O)? (Approximate atomic masses: H=1, O=16)

Which of the following is an example of an ionic compound?

What type of bond is formed when atoms share electrons equally?

What is the mass percentage of carbon in carbon dioxide (CO2)? (C=12, O=16)

In an ionic compound, which element typically comes first in the name?

What is the sum of the mass percentages of all elements in a compound?