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Freezing micro-lesson
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Freezing is the process where a liquid changes into a solid. Freezing happens when an object loses its heat so it's being cooled down. This causes the particles in the liquid to form tighter bonds which we know make a solid. Now, every liquid has a freezing point at which freezing happens. One example of freezing is when water turns into ice. Now, the freezing point for water is 0 degrees. So, water turns into ice at 0 degrees. But different liquids have different freezing points. Now, freezing is a reversible process, and the opposite of freezing is melting. So, we know that different liquids freeze at different temperatures. Well, they have different freezing points, but why? Because different liquids have different levels of viscosity. Now, that just means how thick a liquid is. And we can see how thick a liquid is by seeing how easily it flows or pours. So, thicker liquids take longer to freeze and have a lower freezing point. It needs to be much colder. So, the highest viscosity will have the lowest freezing points.
Answer time
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Here are some example of questions about this video that kids may be asked in the 1Question app to earn screen time.
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A high viscosity liquid (thick) takes longer to freeze and has a _______ freezing point
1) lower (colder)2) higher (warmer) -
Does every liquid have the same freezing point?
1) No2) Yes -
Freezing happens when WHAT is lost from an object?
1) heat2) particles3) space4) liquid -
Freezing is a
1) process2) state of matter3) temperature -
Freezing is a process where which state of matter changes to which state of matter?
1) Liquid changes to solid2) solid changes to liquid3) liquid changes to gas4) gas changes to solid -
What happens to particles from liquids when freezing occurs?
1) Form tighter bonds2) get bigger3) get further apart4) shrink -
What is the name for the temperature in which freezing happens?
1) freezing point2) boiling point3) ice point4) ice -
What is waters freezing point?
1) 02) 153) -104) 8 -
what term refers to the thickness of a liquid?
1) Viscosity2) degrees3) pourability4) carbonation -
Which of these liquids will take the longest to pour?
1) Honey2) Vinegar3) Milk4) Shampoo
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Meet your educator
Our micro-courses are developed and delivered by qualified educators from around the world.
Georgina Mullin
Energetic British primary school teacher, teaching in an outstanding London school. Lucky to have trained with Teach First and UCL’s Institute of Education to deliver high quality education for all. Love all things English, Psychology and Science!
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