MIXTURES Mixtures are a combination of _______________________________ that are __________ _______________________________________. Unlike elements & compounds, if anything about the mixture is changed, it remains a mixture. Each substance in a mixture _________________________________________________. Because they are _______________________________________________, mixtures can be separated __________________________________________________. Unlike compounds, mixtures _________________________________________________ ***Water (H2O) will ALWAYS be made of 2 atoms of hydrogen and 1 atom of oxygen – this is a specific ratio; a pepperoni pizza will not always have the same number of pieces of pepperoni – it will still be a pepperoni pizza if it has 10 pieces of pepperoni or 25 pieces of pepperoni. WAYS TO PHYSICALLY SEPARATE MIXTURES 1) _____________________ - if part of the mixture contains a magnetic substance______ 2) _____________________ – separates mixtures based on boiling points_____________ 3) _____________________– separates mixtures based on density__________________ 4) _____________________ – leaves you with the solids that were dissolved in a liquid___ 5) _____________________– can use to separate out larger parts of the mixture_______ TYPES OF MIXTURES 1) _____________________________ - everything in the mixture looks exactly the same; you can’t tell one part of the mixture from the other parts. It is very well mixed Example: sweet tea – once it is mixed together, you can’t tell the water from the tea or the sugar. 2) ____________________________ - This is not a “well-mixed” mixture. You can look at the mixture and distinguish the different parts of the mixture from each other. Example: tacos – you can see all the different parts that make up the taco – the lettuce, tomatoes, meat mixture, taco shell, etc. _____________________- mixture that appears to be a single substance; is made of particles of two or more substances that are distributed evenly among each other; same appearance and properties throughout the mixture. _____________________- a substance that is dissolved into another substance _____________________- the substance in which the solute is dissolved _____________________- measure of how much solute is dissolved in a solvent; the more solute that is dissolved, the more concentrated the mixture This beaker has less solute dissolved, so it is more DILUTE This beaker has more solute dissolved, so it is more CONCENTRATED ___________________- ability of a solute to dissolve in a solvent at a certain temperature. _____________________- mixture in which particles of a material are dispersed throughout a liquid or gas but are large enough that they settle out. (Example: snow globe) _____________________- mixture in which the particles are dispersed throughout but are not heavy enough to settle out; particles in a colloid are relatively small and fairly well mixed; cannot separate the particles in a colloid through filtration. Examples: mayonnaise, deodorant, gelatin WAYS TO DISSOLVE SOLIDS FASTER 1) __________ or ________ 2) _________ 3) ____________ (exposes more surface area) Explain why the air we breathe is described as a mixture of gases.________________________ _____________________________________________________________________________ _____________________________________________________________________________ ____________________________________________________________________________ Draw a picture of a mixture.