Mix of Flow and Matter Flashcards
What is a pure substance?
Made of only one kind of matter; cannot be separated into different substances. Ex. Gold, aluminum foil
What is a mixture?
Made up of combinations of different substances
Ex. Saltwater, oreos, air, pancake mix.
What can mixtures be broken up into?
Mechanical mixture
Solution
Suspension
Colloid
What is a mechanical mixture? (Heterogeneous mixture)
A mixture that is made up of two or more parts.
Examples: Pizza and salsa
Solution (Homogeneous mixture)
A mixture of 2 or more pure substances that looks like one substance.
Examples: Pepsi, sugar and water
What is suspension?
A cloudy mixture in which droplets or tiny pieces of one substance is held within another substance; if left undisturbed, its parts will usually separate out. The particles settle slowly after mixing.
Examples: muddy water, tomato juice, orange juice with pulp, salad dressing
What is a colloid?
A cloudy mixture in which very small particles stay suspended in the liquid. Colloids are considered to be between a solution and a suspension.
Examples: Homogenized milk is a colloid of tiny cream droplets in whey, Cytoplasm inside cells
What is a solvent?
A substance that dissolves a solute to form a solution
Example: Water, known as the ‘universal solvent’
What is a solute?
A substance that dissolves in a solvent to form a solution.
What is a solution?
Dissolving one substance into another creates a solution, the solute particles are attracted to the atoms of the solvent. A solution should look like one fluid, no floaties!
What is concentration?
The amount of solute (g or kg) dissolved in a specific amount of solvent (mL or L) in a solution; written as g/L or kg/L. Means amount of solute/amount of solvent.
We use terms like ‘concentrated’ and ‘diluted’ to describe the solutions:
In a concentrated solution there are large amounts of solute in a solution
In a diluted solution there are small amounts of solute in a solution
