2) Select 2 that apply. A synthesis reaction will be:
1. a chemical reaction in which two or more substances combine to form a new compound
2. a reaction in which a single compound undergoes a chemical reaction to produce two or
simpler substances
3. AB -> A + B
4. A+B -> AB
5. a reaction in which one element displaces a similar element in a compound

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

When would a bouncy ball have the most potential energy

Lab reagent, hypothesis test. a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl. these six measurements are assumed to be an srs of all possible measurements from solution. they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution. carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.