Materials List: Hot or Not

Each group needs:

  • cold water
  • isopropyl (rubbing) alcohol
  • food coloring (any color)
  • clear, narrow-necked plastic or glass bottle (for example, an 11 oz water bottle)
  • rubber stopper with a hole (often part of classroom science kits), to create an airtight seal for the thermometer (alternative: modeling clay, but more difficult to get a good seal)
  • long, clear straw (such as balloon sticks from a party supply store)
  • Temperature Conversion Worksheet

To share with the entire class:

  • isopropyl (rubbing) alcohol or mercury thermometer for calibrating
  • black Sharpie┬« or waterproof marker
  • (optional) large bowls or containers of water in different temperatures (to act as water baths, with varying temperatures from ice cold to very warm)