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CSU1.6b Boiling and bubbling

This resource explores the process of boiling water through a series of photographs captured over 20 minutes. It examines the formation of bubbles as water heats, highlighting key moments at 5, 10, 15, and 20 minutes. The images depict different stages of boiling, allowing students to identify which stages involve boiling and to consider the relationship between the formation of bubbles and the decrease in water volume. Through questions and answers, learners can better grasp the concepts of phase changes in water, focusing on the science behind boiling.

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CSU1.6b Boiling and bubbling

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  1. CSU1.6b Boiling and bubbling York Science

  2. 1 These pictures show water being heated over a period of 20 minutes: 5 minutes 10 minutes 15 minutes 20 minutes Picture 1 Picture 4 Picture 2 Picture 3 Which pictures show water boiling? A Pictures 1, 2, 3 and 4 B Pictures 2, 3 and 4 C Pictures 3and 4 D Picture 4 York Science

  3. The picture shows a beaker of boiling water on a hot plate. Big bubbles form at the bottom and rise to the top: What are the big bubbles? A Air B Water in the gas state C Oxygen or hydrogen or both D Air and water York Science

  4. The pictures show water left to boil for 10 minutes: 10 minutes The amount of water (liquid) in the beaker goes down. Do the bubbles have anything to do with this? A Yes. Water (liquid) is used to make the bubbles. B No. The loss of water has nothing to do with the bubbles. C Yes. As the bubbles burst, they force out surrounding water York Science

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