Chapter 2 Chemistry Quiz

Electrons are shared between two atoms to complete their octets.

A covalent bond occurs when Electrons are shared between two atoms to complete their octets. Neutrons are shared between two atoms to form an isotope. Protons are transferred from one atom to another. Electrons are transferred from one atom to another. The hydrogen of one water molecule is attracted to the oxygen of another water molecule.

Buffer

A(n) ________ can be defined as a substance that prevents the pH of a solution from changing by either releasing or absorbing H + in a solution. Equalizer Acid Buffer Solute Base

Concentration of H+ present in a solution

The pH scale is a mathematical indicator of the Ability to dissolve in water. Concentration of OH- present in a solution. Total amount of all ions in a solution. Ability of a solution to buffer. Concentration of H+ present in a solution.

It is denser when frozen than when liquid.

Which of the following is not a property of water? A. It can be found as a solid, liquid, or gas. It resists temperature changes. It is a good solvent. It is cohesive. It is denser when frozen than when liquid.

Iron

Which of the following is not one of the most common elements in living things? Oxygen Nitrogen Iron Calcium