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Topic 1.1
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Slide 1: Diapositive
ScienceMiddelbare schoolhavo, vwoLeerjaar 2

Cette leçon contient 13 diapositives, avec quiz interactif et diapositives de texte.

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YR2_T1_LSN1
Topic 1.1

Slide 1 - Diapositive

Topic 1.1 - Learning Goals:
I can…

  • Explain what makes something a substance
  • Describe a substance using its properties and use properties to identify a substance
  • Know the difference between a pure substance and a mixture
  • Understand the difference between a homogeneous mixture and heterogeneous mixture
  • Decide if a liquid mixture is a solution or a suspension based on its properties
  • Explain the different ways a mixture can be separated by using separation methods

Slide 2 - Diapositive

Topic 1.1 - Key Words:
  • Evaporation
  • Extraction
  • Filtration 
  • Heterogeneous mixture
  • Homogeneous mixture
  • Mixture
  • Pure substance
  • Properties
  • Separation
  • Solution
  • Solvent
  • Solute
  • Substance
  • Suspension

Slide 3 - Diapositive

1.1 - Substances and properties:
Substance = matter = made of atoms or molecules
  • Substance has mass and takes up space

Every substance has unique properties
  • color
  • texture
  • smell
  • hardness
  • phase at room temperature (solid, liquid, gas)
  • density
  • melting point and boiling point

Slide 4 - Diapositive

1.1 - Pure substance vs mixture:
  • Pure substance is made up of only one kind of atom or molecule
            Example: Water → H2O




  • Mixture is made up of two or more pure substances
           Example: Cola 
           (mixture of water, sugar, gas, flavors) 






Slide 5 - Diapositive

1.1 - Mixtures:
  • Homogeneous mixture is a mixture where different substances are equally distributed throughout the mixture
               Example: solution of sugar in water



  • Heterogeneous mixture is a mixture where different substances are not equally distributed throughout the mixture
               Example: chocolate milk







Examples
Examples

Slide 6 - Diapositive

HOMOGENOUS
HETEROGENOUS

Slide 7 - Question de remorquage

1.1 - Solutions:
  • SOLUTION is a clear homogeneous mixture where one substance dissolves in another. The molecules mix evenly together. Example: Sugar in water

Slide 8 - Diapositive

Slide 9 - Diapositive

1.1 - Suspensions:
  • SUSPENSION is a cloudy heterogeneous mixture that separates into layers over time. 
  • It needs to be stirred or shaken to mix well since the particles don’t dissolve.



Slide 10 - Diapositive

Slide 11 - Diapositive

1.1 - Separation methods:
  • Extraction
Separation based on difference in solubility


  • Filtration
Separation based on difference in particle size


  • Evaporation
Separation based on difference in boiling point



Slide 12 - Diapositive

Hw for next time:
LABlesson:
  • Find a lab partner (only pairs!)
  • Read the worksheet: Investigating solubility
  • Prepare lab journal: Investigating solubility

Theory lesson:
  • Complete the exercises of Topic 1.1 (p.8-11).
  • Study the glossary of Topic 1.1 on Studygo.



Slide 13 - Diapositive