Describe the differences in the arrangement of particles in each block: Iron, wood, and sponge.

Here are the answers to Question 4:

• 4.1 Identify TWO characteristics that are the same for the three blocks.

  • All three blocks are solids.
  • All three blocks have a definite shape and volume.

• 4.2 Identify ONE characteristic that is different for the three blocks.

  • The density of each block is different.

• 4.3 Which block has the highest density?

  • The block of iron has the highest density.

• 4.4 Give a reason for your answer to Question 4.3.

  • Iron has the highest density because its particles are much more closely packed together and are heavier than the particles in wood or sponge, meaning it has more mass in the same volume.

• 4.5 Describe the differences in the arrangement of particles in each block.

  • Iron: The particles are very tightly packed in a regular, fixed pattern and can only vibrate in their positions.
  • Wood: The particles are also tightly packed, but generally less dense than iron, and form a more complex, fibrous structure.
  • Sponge: The particles are loosely packed with many large air pockets or pores between them, making the overall material very light and compressible.