Question

1. which of the following is an examples of a chemical change? * ice melting burning bread in a toaster slicing vegetables breaking a pencil

Explanation:

A chemical change results in a new substance being formed. Ice melting is a physical change (change of state). Slicing vegetables and breaking a pencil are physical changes as they only change the physical form. Burning bread in a toaster is a chemical change because heat causes the bread to undergo a chemical reaction, forming new substances like carbon - charred parts and releasing gases.

Answer:

burning bread in a toaster