2. Identity the type of reaction and balance the equation, including the states of matter, for the following reactions:
A. (5 Points) aqueous aluminum nitrate is added to solid calcium
Type of Reaction:
B. (5 Points) aqueous barium chloride is added to aqueous potassium sulfate
Type of Reaction:
C. (5 Points) solid magnesium oxide is heated
Type of Reaction:
D. (5 Points) solid zinc is added to oxygen gas
Type of Reaction:

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.

Identify the correct mole ratio for each substance. sodium chloride (nacl) na: cl = 1: ammonium nitrate (nhno) h: o = 4: