What is a Mixture?
What is a mixture?
Two or more substances combined where each keeps its own properties.
What is a solution?
A special mixture where one part dissolves in another.
How can you separate cereal from raisins?
By hand-picking.
What is a physical property?
A characteristic you can observe or measure without changing the substance.
Is soda a mixture or a solution?
Solution
Give one example of a mixture.
Trail mix, sand + water, cereal + milk, etc.
In saltwater, which is the solute and which is the solvent?
Salt = solute, Water = solvent.
What tool would you use to separate sand from iron filings?
A magnet.
Name two physical properties of a penny.
Color (copper), round shape, hard, shiny, etc.
Is trail mix a mixture or a solution?
Mixture
True or False: In a mixture, substances lose their physical properties.
False
Name one food or drink that is a solution.
Lemonade, soda, tea, juice, sports drink, etc.
How can you separate gravel from water?
By straining or filtering.
Which is a physical property: burning or dissolving in water?
Dissolving in water.
Name a solution you use in everyday life.
Juice, sports drink, tea, saltwater, etc.
Mixtures can be made of what kinds of matter?
Solids, liquids, gases, or a combination.
What happens when a solute dissolves?
It spreads out so tiny we can’t see it anymore.
How could you separate salt from water?
By evaporation.
Why are physical properties important in separating mixtures?
Because they help scientists decide how to separate substances.
Why is slime considered a mixture?
Because it combines substances that form new physical properties but are still mixtures of ingredients.
Why is sand in water a mixture and not a solution?
Because the sand does not dissolve; it keeps its properties and can be separated.
Explain how a solution is different from a mixture.
In a solution, one substance dissolves evenly into another; in a mixture, the substances remain separate.
You have a “mystery mixture” of beads and sand. What’s one way to separate them?
By size (sifting/sieving).
Give three different physical properties used to separate mixtures.
Size, magnetism, solubility, density, state of matter, etc.
Give one way mixtures and solutions affect your everyday life.
Possible answers: food/drinks we eat, medicine, cleaning products, cooking, etc.