The energy changes that occur when chemical bonds are broken and formed
What is energy released when bonds are formed and energy absorbed when bonds are broken
The change in enthalpy for an exothermic reaction
What is negative
The oxidation numbers for each atom in H2SO4
What is +1 for H, +6 for S and -2 for O
The amount of heat energy added when the temperature of 2.0g sample of aluminum increases from 25 degrees celsius to 30 degrees celsius given that the specific heat capacity of aluminum is .90 J/gK
What is 9.0 J
The reducing agent for the equation: I2 + SO32- + H2O => 2I-1 + SO42- +2H+
What is S in SO32-
Theory describing how rate of reaction is determined by the energy of collision (more energy means more molecules reach activation energy), and geometry of collision
Collision theory
These metals in order of increasing reactivity: Pb, Ni, Zn, Ag, Sn, Cu, Mg, Fe
What is Ag, Cu, Pb, Sn, Ni, Fe, Zn, and Mg
The explanation of spectrophotometry
What is a technique used that passes light of a certain wavelength through a solution, and measures the light absorbed by the reaction components. As the concentration of the colored compound increases, more light is absorbed.