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Substance and Mixtures + Properties of Solution
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What is another name for homogeneous mixture?
solution
What are 3 ways we can make a solute more soluble?
Crush it, stir it, or heat it
What pH value is neutral?
7
What testing paper can we use to test if a solution is acidic or basic?
Litmus paper
What do acids taste like?
Sour
What do bases taste like?
Bitter
What is the name of H3O+ ?
Hydronium
What is the name of OH- ?
Hydroxide
T/F: Compounds contain atoms from at least two different elements
True
T/F: The composition of a substance is always the same
True
Which one represents a heterogeneous mixture?
D
If I have less salt but more water in my cup, what type of solution is that?
Diluted solution
Polar solvents best dissolve in...
polar solutes
What type of bond is known as" the sharing of electrons"
Covalent bonds
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 factors affect solutbility?
Temperature and pressure
What is the equation for concentration?
m/V (mass of solute dissolved/ volume of the solution)
T/F: A concentrated solution is a solution with more dissolved solute
True
True or false: Mixtures are not chemically combined.
True
True or False: Compounds are formed by physically mixing two or more substances.
False
True or False: A cup filled with water and pebbles is a homogeneous mixture.
False
What is another name of homogeneous mixture?
solution
What are the two types of mixtures?
Heterogeneous and homogeneous
________ is a pure substance composed of only one type of atom.
elements
_________ is a pure substance formed by two or more different types of elements.
compound
What are the two types of substances?
elements and compounds


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