Mixtures Flashcards
What are the 2 different substances of matter?
Pure Substances and Mixtures
What is a Pure Substance?
a pure substance consists only of one element or one compound
Distinguish between an element and a compound
A compound (eg. water) can be broken down with chemical reactions. Elements (eg. oxygen) cannot.
What is a mixture?
a mixture consists of two or more different substances, not chemically joined together
What are the 2 different types of mixtures?
Homogeneous mixtures and Heterogeneous mixtures
What is a homogeneous mixture?
Homogeneous mixtures look the same throughout, ie. a solution (eg. mouthwash, saltwater) and you cannot physically seperate it
What is a heterogeneous mixture?
A mixture that can be physically seperaterd (eg. pizza, salad)
What are the 3 types of solutions?
Solutions, colloids, suspensions
What is a solution?
A mixture where a solid substance is dissolved in a liquid
What is a suspension?
A mixture with lumps that float around. They eventually settle out.
What is a colloid?
A mixture that contains particles (in the form of solid, liquid or gas) that is distrubuted evenly throughout
What does it mean when you say a substance is soluble?
It means that substance that is able to dissolve
What does it mean when you say a substance is insoluble?
It means that substance that is unable to dissolve
What is a solute?
The substance that dissolves
What is a solvent?
The substance that dissolves the solute is the solvent
