Select the correct answer. samuel adds a teaspoon of salt to a glass of water. he notices that the salt disappears. samuel takes a sip to discover that the water tastes salty. what kind of change has occurred? a. it’s a chemical reaction because a new substance has formed. b. it’s a physical change because the water and the salt kept their original properties. c. it’s an example of synthesis because two substances reacted to give one substance. d. it’s a chemical reaction because the water now tastes salty but originally did not.