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WorksheetsTopic 4: Mixtures & Solutions
Total questions: 59
Worksheet time: 2hrs 2mins
Which has a higher concentration?
5 gram sugar; 100 mL water
3 gram sugar; 50 mL water
7 gram sugar; 100 mL water
3 gram sugar; 75 mL water
Muddy water from a creek after a heavy rain is an example of a suspension.
True
False
Water and Kool-Aid are mixed together. Hot water, coffee and sugar are mixed together.
Which substance is the solvent in both?
Water
Coffee
Kool-aid
Sugar
A material that has a lot of solute dissolved in solvent is
concentrated
compound
chemical change
flammable
This type of mixture has large enough particles that you can see the different types of particles.
Homogeneous
Heterogeneous
Colloid
Solution
A mixture with such small particles that you cannot see the individual particles.
Suspension
Sublimation
Heterogeneous
Homogeneous
Which of the following examples is a Heterogeneous mixture?
Tap Water
Beach Sand
Vanilla Cake Mix
Bottle of Cola
Which substances, when mixed together, maintain their original physical properties?
gravel and water
wood chips, water and sand
sand and water
all of the above
Which of these statements about mixtures are true?
Check all that are true.
All mixtures are two or more substances that are combined to form a new substance.
A mixture cannot be separated into its original parts.
A mixture can be separated into its original parts.
All mixtures are two or more substances that are combined without changing their properties.
Which of these statements about solutions are true?
Check all that are true.
A solution always contains water.
A solution is a type of mixture.
A solution can be made of solids, liquids, or gases.
A solution contains two or more substances.
In a solution, the __________ dissolves into the __________.
solute ; solvent
solvent ; solute
solute ; solubility
solubility ; solvent
Which of the following has the lowest solubility?
carbon dioxide in water
sand in water
sugar in water
There is not enough information to answer the question.
How can you decrease the concentration of a solution?
A solution was prepared by dissolving 30g of Kool-Aid mix into 200mL of water. What is the concentration of this solution?
6.7 g/mL
0.15 g/mL
30 g/mL
0.10 g/mL
A science class made three solutions using cranberry juice, water, and sugar. The solutions were labeled X, Y, and Z. The class wrote what the solutions looked like in the table.
Which solutions have a different physical state than one or both of their parts?
X, Y, and Z
Y and Z only
X and Z only
X and Y only
An object that is a single substance is made of only one kind of material.
Which of these is a single substance?
salt and pepper
a piece of tin
fruit salad
a slice of pizza
Solutions are mixtures.
TRUE
FALSE
Which of the following is a mixture but not a solution?
soda water
saltwater
iron and sand
sugar dissolved in water
Salt is a solid, while water is a liquid.
What change in physical state happens when salt and water mix?
Salt changes from a pure solid to a pure liquid.
Salt changes from a pure solid to part of a liquid solution.
Water changes from a pure liquid to part of a gas solution.
Water changes from a pure liquid to part of a solid solution.
When iron filings are mixed with sand, which physical property of the iron filings stays the same?
magnetism
shape
state of matter
all of these
Which answer is ALWAYS true for solutions?
Every sample of a solution is the same.
The properties of a solution are always the same as its parts.
The parts of a solution must be liquids.
The parts of a solution can each be seen in the solution.
Adrian makes four different solutions by mixing sugar and water as shown in the table.
Which solution has the highest concentration?
Solution 1
Solution 2
Solution 3
Solution 4
Which of the following will speed up the rate at which a solid dissolves in a liquid?
crushing the solid
stirring the mixture
shaking the mixture
all of these
The concentration of a solution is based on the amount of solute present in an amount of solvent.
If 50.0g of sugar is added to 10ml of water, the concentration would be ______g/ml.
0.2
5.0
40.0
500.0
Jody is trying to find out how much salt will dissolve in 200 mL of water. She adds salt to the beaker of water, but the salt seems to just sit on the bottom of the beaker.
What can Jody do to help the salt dissolve?
add food coloring
add sugar
cool the water
stir the water
Peter needs to dye some yarn for an art project. He has a lot of yarn to dye, so he wants to know the fastest way to dissolve his dye tablets. He does an experiment to determine the best strategy.
Based on these results, what is the best thing Peter can do to the tablets so that they dissolve quickly?
increase the surface area
decrease the total weight
increase the total weight
decrease the surface area
Most substances dissolve....
at a constant rate regardless of heat transfer.
more quickly as heat is removed from them.
at the same rate as all other substances.
more quickly when heat is added to them.
A class is doing an experiment to test which solids will dissolve in water. They are testing salt, baking soda, cinnamon, and sugar.
How will the students know if each solid dissolves?
The water will become cloudy.
The solid will fall to the bottom of the container.
The water will become bubbly.
The solid will seem to disappear.
Jenna put 100 grams of salt into one cup, or 237 mL, of water at room temperature. Only 87 grams of the salt dissolved in the water and the rest stayed on the bottom of the cup.
What will happen if she heats the water in the cup?
the salt will become a gas
the salt will melt
more salt will dissolve
less salt will dissolve
Tina has a beaker filled with salt and water. If she adds more water to the beaker, the concentration of the solution will _______.
decrease
equal zero
stay the same
increase
Mixing cornstarch and water causes a physical change.
When the cornstarch is mixed with a small amount of water, the mixture _____.
releases a gas
has new properties
cannot be separated
has the same properties
When yellow paint mixes with blue paint, the mixture becomes green.
What does this show about mixtures?
A mixture may have a new color that is different than its parts.
A mixture's color can never be predicted.
A mixture is always the same color as one of its parts.
A mixture never has a color.
Cereal is a homogenous mixture
True
False
Italian salad dressing is a heterogenous mixture.
True
False
Rebecca made a mixture of raisins, nuts, and dried fruit for a snack. Which kind of mixture was Rebecca’s snack?
solution
colloid
heterogeneous mixture
suspension
A mixture containing particles that settle out if left undisturbed is a:
colloid
solute
solvent
suspension
Two types of heterogeneous mixtures are suspensions and colloids.
True
False
Which of the following is classified as a pure substance?
Lemonade
Fruit punch
ketchup
Hydrogen
What type of mixture does this diagram represent?
Homogeneous
Heterogeneous
What is this?
Heterogeneous
Homogeneous
What's this?
Heterogeneous
Homogeneous
What is this?
Homogeneous
Heterogeneous
Which solution is more concentrated?
Solution 1:
500 mL of water
100 g of salt
Solution 2:
500 mL of water
90 g of salt
Solution 1
Solution 2
They have the same concentration
I have no idea
Which scenario will the sugar dissolve the quickest?
A cube of sugar is poured into cool water.
Granulated sugar is poured into warm water.
A cube of sugar is stirred in hot water.
Granulated sugar is stirred in hot water.
