Share Substance and Mixtures + Properties of Solution
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What are the two types of substances?
elements and compounds
_________ is a pure substance formed by two or more different types of elements.
compound
________ is a pure substance composed of only one type of atom.
elements
What are the two types of mixtures?
Heterogeneous and homogeneous
What is another name of homogeneous mixture?
solution
True or False: A cup filled with water and pebbles is a homogeneous mixture.
False
True or False: Compounds are formed by physically mixing two or more substances.
False
True or false: Mixtures are not chemically combined.
True
T/F: A concentrated solution is a solution with more dissolved solute
True
What is the equation for concentration?
m/V (mass of solute dissolved/ volume of the solution)
What factors affect solutbility?
Temperature and pressure
What methods can make a solid solute dissolve faster in a liquid solvent?
Stir the solution, increase the temperature (melt), and crush the solute
What type of bond is known as" the sharing of electrons"
Covalent bonds
Polar solvents best dissolve in...
polar solutes
If I have less salt but more water in my cup, what type of solution is that?
Diluted solution
Which one represents a heterogeneous mixture?
D
