Physical Chemistry Questions

who discovered the unexplainable photoelectric effect

relationship between energy and frequency

What does the 100% intensity peak represent

when product bonds are made energy is ______ to the surroundings

what arrangement must H and X have in E2 reaction

bond energy is the amount of energy needed to ____ a bond.

when reactants bonds are broken energy is ______ from surroundings

What does the molecular ion peak furthest to the right show

What do we use to make assumptions about the structure of TS

An ice pack works ammonium chloride and water react e_______ and energy is a_____ from the surrounding.

Energy change is found experimentally by:1.Placing p____ cup into a beaker.2.Adding 40cm3 of acid using a ____ ____.3.Adding 5cm3 of an a____.4.Using a thermometer to s___ and take the ______5.Adding alkali until a total of 40cm3 is used.6.Repeat the experiment and calculate a ____7.Draw a graph with two lines to find the______ temperature reached.

A self heating can works when calcium oxide and ___ react e_____and energy is r_____ into the surroundings.

What type of reactions are breaking bonds and making bonds?

What does the reaction profile look like for an exothermic reaction?

What does the reaction profile look like for an endothermic reaction?

What is the minimum amount of energy required for reaction to occur called?

The substances that enter a chemical reaction are called...

Apples slices can be kept from browning by brushing them with lemon juice. What role is the lemon juice playing?

What is the chemical equation for a endothermic reaction

Are solutions homogeneous or heterogeneous?