Achange in the properties of matter where chemical bonds are broken and new bonds are formed is

a.) a chemical change
b.) a physical change
c.) an ionic change
d.) a covalent change

Enough of a monoprotic weak acid is dissolved in water to produce a 0.0172 m solution. if the ph of the resulting solution is 2.39 at 20 °c, determine the pka for the acid.

What is the formula for calcium iodide

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.