January 2018 Chemistry Regents Questions 11-20

Match it! Select the correct answer from the pull down...Good luck!

A catalyst increases the rate of a chemical reaction by

The energy absorbed and the energy released during a chemical reaction are best represented by a

Which term represents the strength of the attraction an atom has for the electrons in a chemical bond?

Which statement describes the changes that occur as the oxygen molecule is produced?

A chemical reaction is most likely to occur when the colliding particles have the proper

Which formula represents an alkyne?

Which sample of gas at STP has the same number of molecules as 6 liters of Cl2(g) at STP?

Which substance can not be broken down by a chemical change?