Question

Which of the following represents a type of change (physical or chemical) that is different from the rest?

a Breaking a cracker in half
b Grinding a cracker in a mixer
c Biting on a cracker into smaller pieces
d Digesting a cracker in the stomach

Answer 1

The type of change that is different from the rest is d) Digesting a cracker in the stomach. This represents a chemical change because the cracker is broken down and chemically transformed through the process of digestion. The other options (breaking a cracker in half, grinding a cracker in a mixer, biting a cracker into smaller pieces) represent physical changes as they do not change the chemical composition of the cracker.