identifying changes of matter\nwhich of these are physical changes in matter? check all that apply.\nboiling…

identifying changes of matter\nwhich of these are physical changes in matter? check all that apply.\nboiling water\na pencil being sharpened\nexploding dynamite\nfreezing water\nrotting cheese

identifying changes of matter\nwhich of these are physical changes in matter? check all that apply.\nboiling water\na pencil being sharpened\nexploding dynamite\nfreezing water\nrotting cheese

Answer

Brief Explanations:

Physical changes do not change the chemical composition of matter. Boiling water changes water from liquid to gas without altering its chemical formula ($H_2O$). Sharpening a pencil only changes its physical shape. Freezing water changes its state from liquid to solid without changing its chemical nature. Exploding dynamite is a chemical reaction as new substances are formed. Rotting cheese is a chemical change due to decomposition by bacteria and fungi.

Answer:

  • boiling water
  • a pencil being sharpened
  • freezing water