Cette leçon contient 10 diapositives, avec diapositives de texte.
La durée de la leçon est: 50 min
Éléments de cette leçon
Pure or mixture?
Slide 1 - Diapositive
Activating prior knowledge
Last year we've discussed substances.
How can you identify a substance?
Slide 2 - Diapositive
Which substance properties are there?
Slide 3 - Diapositive
Notes, copy in your notebook.
A pure substance is a substance with only one type of molecule
A mixture is a substance with multiple types of molecules.
Each substance is identifiable by its properties.
Guess the word(s)
Guess the word(s)
Slide 4 - Diapositive
Three phases
A substance is encountered in daily life in one of the three phases.
either it is: Solid, Liquid or Gaseous.
somtimes we also use substances dissolved in water
Guess the word(s)
Slide 5 - Diapositive
Points and ranges
If you have a mixture, it has substance properties of both materials. It no longer has a set boiling temperature (point) or melting temperature (point) but it now has a range of boiling and melting temperature. You can use this to see if a substance is a pure substance or mixture.
La durée de la leçon est: 50 min
