What are examples of physical changes?

Select all that apply.

Responses

folding some paper to make a model airplanefolding some paper to make a model airplane

combining hydrogen and oxygen to make watercombining hydrogen and oxygen to make water

shattering a glassshattering a glass

cooking an egg

1 answer

Examples of physical changes from the provided options include:

  1. Folding some paper to make a model airplane - This is a physical change as the paper is still paper and only its shape has changed.

  2. Shattering a glass - This is also a physical change because the glass breaks into pieces, but its chemical composition remains the same.

The other two options are not physical changes:

  • Combining hydrogen and oxygen to make water - This is a chemical change, as new substances are formed (water).

  • Cooking an egg - This is also a chemical change because the proteins in the egg undergo a change that transforms them into a different substance.

So, the correct answers are:

  • Folding some paper to make a model airplane
  • Shattering a glass