Solutions And Mehanical Mixtures Flashcards
What does filtration mean?
Filter paper allows the soluble solute to pass through and the insoluble solid is left behind
What does soluble mean?
Solids that can dissolve in a solvent
What are separation techniques used for?
To separate mixtures
What does sedimentation do?
Allows large pieces of insoluble substances to settle out of a mixture ( sink to the bottom)
What’s a mixture?
Combination of 2 or more substances that are not chemically combined
What are 3 properties that all mixtures have?
- Substances in a mixture Keep its identity (pizza)
- Mixtures can be physically separated (salt water, water changes to gas, salt stays behind)
- The components of a mixture do not have a definite ratio (air, sometimes has more water vapor than other days)
What are the 3 types of mixtures?
Solutions, suspensions, colloids
What is a solution?
A single substance that is composed particles of 2 or more substances that can spread out evenly
Why are solutions also called homogenous mixtures?
Same appearance and properties throughout the mixture
What does dissolving mean?
Particles of substances separate and spread evenly throughout a mixture
What’s a solute?
Substance that is dissolved
What’s a solvent?
Substance in which the solute is dissolved
What is a suspension?
Particles of a material spread out throughout a liquid or gas but are large enough that they settle out
Why are suspensions also called heterogeneous mixtures?
Different components are easily seen
What is a colloid?
Particles In a mixture disperse throughout but are not heavy enough to settle out
What does insoluble mean?
Unable to dissolve, forms a mixture that is not a homogenous (solution)
All substance are made of what?
Matter
When the matter made up of one type of atom we call it what?
Pure element
When the matter is made up of two or more types of atoms we call this what?
Pure compound
When a substance is made up of only one type of mater we call it a?
When the matter is made up of two or more types of matter we call it a?
- Pure substance
2. .Mixture
What is evaporation used for?
Used to separate a solid solute from a solvent
When a substance is made up of two or more types of matter that you can visually identify as being different, this is called what?
Mechanical mixture
When the matter is made up of two or more different types of matter that u can’t visually identify, this is called what?
Solution
What units of measurement is used to measure solubility?
Gram of solute per unit volume of solvent
What factor can effect the solubility of a substance?
Temperature
What is a saturated solution?
Solution that will not dissolve any more solute at a given temp. Or pressure