Question

item 8
ngss ms mod 1 u1l2 passage
changes in temperature
gegge puts a beaker of ice and water on a hot plate, as shown, and turns the hot plate on.
what type of change would you expect the ice to undergo?
choose the correct answer.
a purely physical change because it will change state
a physical and chemical change because it will change state
a purely physical change because it will form a new substance
a physical and chemical change because it will form a new substance

Explanation:

When ice is heated on a hot plate, it melts into water (a phase change, physical change) and then water may boil (also physical change). No new substance is formed, so it's a purely physical change as it involves state changes (solid to liquid to gas potentially) without chemical reaction. The option "a purely physical change because it will change state" is correct as physical changes involve state/phase changes without new substances, while chemical changes form new substances (not the case here, and it's not a mix of physical and chemical as no chemical reaction occurs).

Answer:

a purely physical change because it will change state