What is the approximate mass of a proton?*

An electron in a sodium atom gains enough energy to move from the second shell to the third shell. The sodium atom becomes*

Which particle has no charge?*

Which quantity represents the number of protons in an atom?*

The element sulfur is classified as a*

The elements in Group 2 have similar chemical properties because each atom of these elements has the same*

What is formed when two atoms of bromine bond together?*

Gold can be flattened into an extremely thin sheet. The malleability of gold is due to the*

Which term represents the attraction one atom has for the electrons in a bond with another atom?*

Salt water is classified as a*

Which substance can not be broken down by a chemical change?*

Some physical properties of two samples of iodine-127 at two different temperatures are shown in the table below.

These two samples are two different*

Powdered iron is magnetic, but powdered sulfur is not. What occurs when they form a mixture in a beaker at room temperature?*

Which property is a measure of the average kinetic energy of the particles in a sample of matter?*

According to the kinetic molecular theory, which statement describes the particles of an ideal gas?*