Tamika and Josie are planning a lab investigation. They plan to heat ice cubes untilthey melt and then boil away. Which type of change is this, and why?

Physical change

Explanation:

This type of change is referred to as a physical change.

   Physical change is a change that alters the physical properties of matter especially their form and state.

In many cases, this change is easily reversible.

  From the given problem:

       Ice         Liquid water       Steam/Vapor

           Melting                evaporation                  physical change processes

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.