Which of the following equations is not balanced?

What type of chemical reaction is illustrated in the following example?

N₂ + H₂ --> NH₃

A chemical change is different than a physical change because in a chemical change

In the chemical reaction CH₄ + 2 O₂ --> CO₂ + 2 H₂O, there are reactants on the left of the equation and products on the right.  If you count the atoms in the reactants, there are

Which equation represents a single replacement reaction?

In a chemical reaction, the products are found on the left side of the arrow.

Which types of reactions are essentially opposites of one another?

What are the correct coefficients when this chemical equation is balanced?

P₄ + O₂ --> P₂O₅

In which state of matter are particles packed tightly together in fixed positions?

In which state of matter do the particles spread apart and fill all the space available to them?

The change from liquid to solid, or the reverse of melting, is called

According to Boyle's law, when the pressure of a gas increases at constant temperature, its volume

According to Charles's law, when the temperature of a gas increases at constant pressure, its

A solution that contains as much solute as can be dissolved under the existing conditions is said to be 

Gases are most soluble in liquids at:

Acids taste

Acids make litmus paper turn

Bases react with

Which type of solution is one with a pH of 8?

Which of the following will NOT increase the rate at which a solute dissolves in a solvent?

Which of these statements about an enclosed gas is true?  (Assume all quantities are constant except the two variables described in each statement.)