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Misc.
Mixtures and Solutions
Acids and Bases
Characteristics of Mix. & Solutions
Misc.
100
Name the pH value of one common material (lemon juice, clean rain, ammonia, soft drink, milk, detergent, spit, tap water, acid rain, or sea water)
What is -lemon juice 2, soft drink 3, acid rain 3, clean rain 5, milk 6.5, tap water 6-8, human saliva 7, sea water 8, detergent 10, ammonia 12
100
What method would you use to separate a mixture of aluminum and iron? **BONUS +100 pts
What is a magnet?
100
Name one of the two most commonly used indicators. ***Name both for +100 bonus pts
What is litmus paper or bromthymol blue?
100
A mixture in which the particles of a material are large enough to settle out
What is suspension?
100
1 of 3 common ways to separate mixtures.
What is distillation, magnet, or centrifuge?
200
The ability of one substance to dissolve in another at a given temperature and pressure.
What is solubility?
200
2 or more substances dispersed evenly
What is solution?
200
This is made when an acid neutralizes a base.
What is salt and water?
200
Name 2 of the 3 ways to make a solid dissolve faster
What is mixing, heating, and/or crushing?
200
Describe the neutralization reaction.
What is -acids and bases neutralize each other -they cancel each other out to form a neutral solution -hydroxide ions (base) and hydrogen ions (acid) react to form water, which is neutral
300
Why some mixtures can be separated easily (think pizza)
What is because the components of a mixture are not changed?
300
In a solution, the substance in which a solute dissolves
What is solvent?
300
A substnace that can change color depending on conditions such as pH. (blue and red)
What is an indicator?
300
A mixture in which the particles are spread throughout but are not large enough to settle out.
What is colloid?
300
Name three examples of bases.
What is bleach, laundry detergent, face wash, baking soda, toothpaste, Tums, ammonia, etc.
400
The equation for calculating concentration
What is concentration = grams of solute/mL of solvent?
400
The amount of a particular substance in a given quantity of a mixture, solution, or ore
What is concentration?
400
Name 4 examples of acids.
What is a lemon juice, lime juice, etc?
400
In a solution, _____ is present in the largest amount, and ______ is present in smaller amounts.
What is solvent, solutes?
400
hydrogen gas forms when zinc metal reacts with this.
What is hydrochloric acid?
500
What must happen for an acid to be considered a strong acid? (400 pts) And what is an example of a strong acid? (100 pts)
What is all molecules in the acid must break apart -ex. sulfuric acid, nitric acid, hydrochloric acid
500
Why do substances in a mixture keep their identities?
What is -no chemical change -each substance has same chemical makeup as before mixture was made
500
Salt is an ionic compound formed from ... ?
What is -the positive ion of a base and the negative ion of an acid -a metal atom replacing the hydrogen of an acid
500
Explain why a snow globe is an example of a suspension
What is -solid particles mix with the clear liquid when shook -particles soon fall to bottom when globe is still -particles ("snow") too big to stay mixed
500
Why do solutions of bases conduct an electric current?
What is bases increase the number of hydroxide ions?