Lab Safety

Lab Safety

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Storyboard Text

  • Mom, can I help you do the dishes?
  • Certainly, son.
  • Mom, the green dish is still hot.
  • I'm coming!
  • I can't wash the green dish. It may break.
  • Really?
  • Yes. The science teacher said that if you immerse a hot glass dish in cold water, it could shatter
  • Did she tell you why this happens?
  • Not really. Something about the glass not cooling fast enough
  • Yes. When glass is heated it expands. If you put it in cold water, the outside cools faster than the inside
  • Wow! You are really smart, mummy. Thankyou
  • The outer glass layers shrink and the inner layers burst through them, making the dish crack.
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