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100
A physical combination of two or more substances that are blended together without forming new substances; can be separated back into its parts
Mixture
100
the parts of a mixture
components
100
the process of separating small particles of a mixture by adding water, causing some particles to attach to air bubbles and rise to the top
flotation
100
Sweet tea is said to be called the drink of the South. Identify the solute & solvent?
sugar
tea
Water=solvent
100
A hiker prepares trail mix for a hiking trip by mixing ingredients in different amounts, as shown.
The hiker weighs the trail mix on a balance. What would be the likely reading on the balance, and why?
Think about what happens to physical properties in a mixture.
The reading will be equal to 840 g because when the ingredients are mixed, the particles are rearranged, but their masses remain the same.
200
a mixture of substances that are blended so completely that the mixture looks the same everywhere
Solution
200
the ratio of solute to solvent in a solution (mass per unit volume)
concentration
200
magnetism
the process of separating a mixture by using a magnet to remove all particles with the property of magnetism
200
What is the difference between a mixture and a solution
The difference between a mixture and a solution
-solution: particles are evenly distributed (example would be sugar mixed in water)
-mixture: the particles that make up the mixture are not equally distributed (fruit mixture)
200
Which is true about the two parts of a solution?
A
The substance in a solution that is in the greatest amount is the solvent, and the substance in the solution that is in the least amount is the solute.
B
The substance in a solution that is in the greatest amount is the solute, and the substance in the solution that is in the least amount is the solvent.
C
The substance in a solution that is a solvent is always a liquid, and the solute is always a solid.
D
The substance in a solution that is a solvent is always a liquid, and the s
A
The substance in a solution that is in the greatest amount is the solvent, and the substance in the solution that is in the least amount is the solute.
300
the substance that is dissolved in a solution
solute
300
the process of separating parts of a mixture by passing a liquid or gas through a filter to remove the solid particles
filtration
300
Timmy has a mixture of sand, water, and rocks. What methods can be used to separate this mixture and what component will be separated with each technique?
sifter: rocks
filter: sand
evaporation: water
300
A mixture where all parts are distributed evenly is known as a
Homogeneous mixture or SOLUTION
300
Debra had cups of coffee labeled A-D with the same amount of coffee in each. She added a different amount of sugar to each cup as represented in the table. Which cup of coffee is the least concentrated solution after the sugar dissolved?
A
400
the substance in which the solute is dissolved
solvent
400
the process of separating a mixture by evaporating all of the liquid and leaving the solid particles behind
evaporation
400
How many substances are there in a mixture?
2 or more
400
What is a solution?
A SOLUTION is a mixture with parts that blend so it looks the same everywhere.
400
Which two statements in the table are true about the concentration of a solution?
2 & 3
500
What are the 2 parts of a solution?
Solute & Solvent
500
What determines the properties of a mixture?
properties of the components of the mixture
500
In what proportion are the substances combined in a mixture?
(concentration)
any /not equal
500
What factors affect solubility
Solubility often depends on temperature. Many but not all, become more soluble at higher temperatures.
500
Examine the diagram that shows two different types of salt. What should a student do to make salt water in the shortest amount of time?
Mix table salt in boiling water and stir.
600
a type of mixture in which the particles of one material are scattered through another and block the passage of light without settling out
colloid
600
Jacy and her friends put raisins, pecans, almonds, and m&m’s in a bowl for a snack. What does this snack represent?
mixture
600
Physical properties can be observed or measured without changing the composition of matter. Physical properties are used to observe and describe matter. Physical properties include: appearance, texture, color, odor, melting point, boiling point, density,
solubility, polarity, and many others.
What is a physical property
600
What is an example of a substance (element) that becomes less soluble with increase in temperature?
oxygen (gas)
600
Which is true about the rate of dissolving?
A
If the solute particle sizes are smaller, the solute will dissolve slower.
B
If a solute is stirred in the solvent, it will dissolve slower.
C
If the temperature is increased in the solvent, the solute will dissolve faster.
D
If the temperature is decreased in the solvent, the solute will dissolve faster.
C
If the temperature is increased in the solvent, the solute will dissolve faster.
700
the process of removing one substance from another in a mixture using a sieve or sifter
sifting
700
How are compounds and mixtures and different?
The parts of a compound do not keep their properties, but the parts of a mixture keep their properties.
700
What term can be used to describe the ability of a solute to be dissolved into a solvent?
solubility
700
Can SOLUTIONS be formed from every state of matter?
If yes give an example
If no, explain why or why not?
Yes! The air we breathe
CO2, O, N, and other gases
700
Brad fills four beakers (W, X, Y, and Z) with 200 mL of water. He then places the beakers of water in four different conditions. If Brad adds 2 tablespoons of sugar to each beaker of water (and he does not stir), which beaker will dissolve the sugar the fastest?
Beaker Y
800
How are mixtures made and separated
by physical means
800
Identify the solute:
a solution of salt and water
How can you separate the salt and water?
salt
evaporation
800
What word is used to describe a solution in which the solute can no longer be dissolved?
saturation
800
Which solution is more dilute: a sugar solution with 1 tbs of sugar in 1 cup of water, and a solution with 2 tbs of sugar in 1 cup of water. THE Solution with _______________________
Explain
1 tbs of sugar (because it contains less solute than the the solution of 2 tbs of sugar in an equal amount of solvent)
800
Christian needed to make 1000 ml of a solution. If his solution was too concentrated, what should he do to correct the concentration?
add more solvent
900
A student dissolved 5 g of salt in 5 mL of water. What should the student do to create the highest concentration
A.Add 5 g of salt and 5 mL of water to the solution because salt is the solvent, and water is the solute.
B.Add 10 mL of water and 5 g of salt to the solution because salt is the solute, and water is the solvent.
C.Add 10 mL of water to the solution because water is the solute.
D.Add 5 g of salt to the solution because salt is the solute.
Add 5 g of salt to the solution because salt is the solute.
900
During an activity, a student prepares a sugar solution by dropping five sugar cubes in a glass of water. How would the concentration of the solution change if one more sugar cube is added to the solution?
The concentration would increase because the quantity of solute in the solution increases.
900
Which will best increase the solubility of a tablespoon of sugar poured into a cup of water?
heating the mixture
900
Arnold has a large beaker with 100 mL of water. He adds 5 g of salt crystals to the beaker.
Which step will decrease the rate at which the salt dissolves?
A Transfer the contents to a smaller beaker.
B Store the beaker in a refrigerator.
C Cover the beaker with a glass lid.
D Stir the contents of the beaker.
B store the beaker in the refrigerator
900
A student adds an equal amount of salt to 4 beakers containing the same amounts of water. He keeps 2 of the beakers at a temperature of 30°C and the other 2 at 15°C. The diagram shows the set-up of the experiment. In which beaker will the salt dissolve the fastest? Why?
Beaker D
Stirring/higher temp
1000
A student fills four containers each with 200 mL of water. He adds different amounts of food coloring to each container, as shown in the table. The student observes that the color of the water in each container varies from light to dark, as shown. Which container is the most concentrated?
Container 4
1000
A girl makes lemonade for her friends. She fills a jar with 1 liter of water, squeezes four lemons in the jar, and stirs the mixture thoroughly. The girl selects four identical glasses and pours the contents from the jar into the glasses, as shown. Her friends add different amounts of sugar syrup in their glasses, as shown in the table. Which friend has the least concentrated glass of lemonade, and why?
Zach; the amount of water and lemon juice in his glass is the greatest, and the amount of sugar syrup is the least.
1000
A girl spilled grape juice on her parent’s white carpet. A concentrated bleach cleaning solution needs to be made to clean the grape juice out of the carpet before it leaves a purple stain.
Which statement best describes what should be done to make a concentrated bleach cleaning solution?
A. Mix equal parts water and bleach to make the cleaning solution.
B. Mix more parts water with less parts bleach to make the cleaning solution.
C.Mix more parts water with less parts laundry soap to make the cleaning solution.
D.Mix more parts bleach with less parts water to make the cleaning solution.
D
Mix more parts bleach with less parts water to make the cleaning solution.
1000
A student adds two teaspoons of sugar to two glasses, each containing the same amounts of water. How will the student then make the solution in Glass P less concentrated than the solution in Glass Q?
Add more water to Glass P.
1000
A student makes a solution by adding 30 g of sugar to 200 mL of water. The student wants to make another more concentrated sugar solution.
What should the student do to make a more concentrated solution?
Dissolve 30 g of sugar in 100 mL of water.