which of the following is not a physical change? * 2 points\n - grating cheese\n - melting cheese\n…

which of the following is not a physical change? * 2 points\n - grating cheese\n - melting cheese\n - processing/creating cheese\n - mixing two cheeses in a bowl\n\nall of the following changes to a metal are physical changes except * 2 points\n - bending\n - melting\n - rusting\n - polishing\n\na chemical change occurs when a piece of wood * 2 points\n - is split\n - decays\n - is painted\n - is cut

which of the following is not a physical change? * 2 points\n - grating cheese\n - melting cheese\n - processing/creating cheese\n - mixing two cheeses in a bowl\n\nall of the following changes to a metal are physical changes except * 2 points\n - bending\n - melting\n - rusting\n - polishing\n\na chemical change occurs when a piece of wood * 2 points\n - is split\n - decays\n - is painted\n - is cut

Answer

Brief Explanations:

  1. Physical changes do not change the chemical composition of a substance. Grating, melting, and mixing cheese are physical changes as the cheese's chemical makeup remains the same. Processing/creating cheese involves chemical reactions like curdling milk, so it is not a physical change.
  2. Bending, melting, and polishing metal are physical changes as they only alter the physical form. Rusting is a chemical change as iron reacts with oxygen to form iron oxide.
  3. Splitting, painting, and cutting wood are physical changes. Decaying wood is a chemical change as microorganisms break down the wood's organic matter through chemical reactions.

Answer:

  1. C. processing/creating cheese
  2. C. rusting
  3. B. decays