Physical & Chemical/ Pure Substances & Mixtures/ States of Matter Flashcards
What is a pure substance?
Matter w/ a fixed composition and definite properties
What are the two types of pure substances? How would you define them?
Elements -> cannot be broken down
Compounds -> two or more elements bonded, can be broken down chemically
Identify each of these as an element or a compound
Fe
F2
NaF
FeCl2
H2O
H2
E
E
C
C
C
E
What is a mixture?
elements and/or compounds combined without bond- separated physically
What are the two types of mixtures? How would you define them?
Heterogeneous -> different throughout
Homogeneous -> same throughout, solution
What can you separate by physical means? List two examples of physical means.
Mixtures
Filtration, Evaporation
What can you separate by chemical means?
Compounds
What type of mixture is a solution?
Homogeneous
What type of mixture is a colloid?
Heterogeneous
What type of mixture is a suspension?
Heterogeneous
What is a solution?
A liquid mixture that is evenly mixed.
a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent).
What does colloid mean?
Consisted of particles larger than atoms or ordinary molecules but too small to be visible to the unaided eye. Cannot be separated through filtration
What does suspension mean?
Mixtures of liquid or other substances which particles are not dissolved. Can be separated through filtration.
What are the four states of matter?
Solid, Liquid, Gas, Plasma
How do the particles move?
Solid…
Liquid…
Gas…
Plasma…
Vibrate in place
Slide past each other
Move freely
Move freely, produce light
