MATTER CHANGES

MATTER CHANGES

1. Mixtures

   • What is a mixture?
     • A mixture is a physical combination of two or more substances
     • Types of mixtures
       • Heterogenous
         • We can see the various substances because they are not combinad evenly, we can alto separate them.
       • Homogenous
         • We can not see the diffevento substances because they are more evenly combined
   • Ways of separating mixtures
     • Magnetic separation
       • We can use it to separate magnetic substances like iron from non-magnetic ones su hijo as paper and plastic
     • Decantation
       • We can use it to separate mixtures of liquids and solids and liquids with different densities
     • Filtration
       • We can use it to separate small particles from liquids or gases. A filter stops the particles in but lets the liquid or gas pass through
     • Evaporation
       • A solution is a special type of homogenous mixture made up of a solid dissolved into a liquid. When we heat the liquid, it becomes a vapour and leaves the solid behind
     • Distillation
       • We can use distillation to separate liquids with different boiling points ( the temperature. at wich the liquid starts to evaporate) . One liquid evaporates first ,and them, we cool it to liquid form.
     • Sieiving
       • We can use it to separate solids of different sizes.

2. Chemical reactions

   • What is a chemical reaction?
     • When a chemical reaction occurs, it changes the properties of a substance and produces something different. they are caused by agents. Matter 1+ Agent = Matter 2
   • Types