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WorksheetsMatter and Mixtures
Total questions: 14
Worksheet time: 7mins
Name
Class
Date
1.
SEE IMAGE
a)
solid, liquid, gas
b)
solid, gas, liquid
c)
gas, solid, liquid
d)
liquid, gas, solid
2.
A student measured the volume of a substance by measuring the length, width, and height. He then placed the substance in a larger container. The volume and the shape of the substance remained the same. What type of substance was he most likely obser
a)
solid
b)
liquid
c)
gas
d)
vapor
3.
A student filled the container shown with different beads to create a mixture. The beads are of various sizes and each one is made of either a light-weight plastic, glass, or iron. Which of the following best supports his claim that he created a mixture?
a)
The beads can be separated based on their properties
b)
The properties of the beads changed when they were mixed
c)
Once the beads were placed in the container they remained solid
d)
The beads were mixed so completely they became a solution
4.
A student made a solution of salt, sugar, and water. When she stirred the mixture and the salt and the sugar seemed to disappear. The clear liquid remained. She measured the masses and included them in the chart, What is the most likely mass of the resulting solution?
a)
5 grams
b)
10 grams
c)
50 grams
d)
65 grams
5.
A student performed the investigation below in which he dropped 2 alka-seltzer tablets into a glass of water. He weighed the tablets into a glass of water. He weighed the tablets and water before the investigation and the solution after the investigation. He found that the solution weighed less after the investigation than the tablets plus the water did before the investigation. What is the best explanation for his results?
a)
The solution weighed less because he did not weigh the gas that escaped
b)
The solution weighed less because some of the matter was destroyed
c)
The solution weighed less because some of the tablets dissolved
d)
The solution weighed less because some of the mass turned into energy
6.
A student was asked to design a model for a mixture. Which of the following diagrams would make the best model of a mixture?
a)
a
b)
b
c)
c
d)
none of the above
7.
The image attached are models that show the particles in 4 different materials. Which one of these diagrams is the best model for a solution?
a)
Model A because the particles are large enough to be seen
b)
Model B because the particles are small enough to go through filter paper
c)
Model C because the particles can separate easily
d)
Model B because the particles are all the same kind.
8.
A student made a solution by adding powdered drink mix to water. She tasted it and decided the solution was too concentrated. How could she make it less concentrated?
a)
add more drink mix
b)
add more water
c)
boil the solution
d)
freeze thee solution
9.
The diagram shown is a model of 2 different sugar and water solutions. The small circles represent particles of sugar. What is the best claim that can be made from the evidence in the models.
a)
Solution A is more concentrated because it contains more solute
b)
Solution A is more concentrated because it contains more solvent
c)
Solution B is more concentrated because it contains more solute
d)
Solution B is more concentrated because it contains more solvent
10.
A student designed an investigation to test how stirring would affect how sugar dissolves. Her experimental design is shown in image. What is manipulated (or independent) variable in this investigation?
a)
amount of water
b)
stirred or not stirred
c)
time
d)
temperature
11.
A student is designing an investigation to determine the effect of different variables on the rate of dissolving. Which hypothesis is most likely to be supported by the investigation?
a)
if the temperatire increases then the solute will dissolve faster
b)
if the particle size of the solute increases, then the solute will dissolve faster
c)
if the volume of the solvent decreases, then the solute will dissolve faster
d)
if the amount of stirring decreases, then the solute will dissolve faster
12.
A student developed a plan to separate a mixture of water, sand, salt, and gravel. The image shows his plan. What part of the mixture is separated in step 3?
a)
sand
b)
salt
c)
gravel
d)
iron filings
13.
The chart shown has the properties of various substances in a mixture that you can consider when separating the mixture. Which of the following processes would work best to separate the plastic beads in one step?
a)
sifting with a screen
b)
dissolving in water
c)
filtering with filter paper
d)
floatation on water
14.
One property of sugar is that it has a sweet taste. A student mixed sugar with water and made a clear solution. She tasted the solution, and it tasted like sugar.
Which of the following is the best explanation of her observation?
Which of the following is the best explanation of her observation?
a)
Dissolving the sugar did not change its taste properties.
b)
Dissolving the sugar created new taste properties.
c)
Dissolving the sugar made a new substance with different properties.
d)
Dissolving the sugar changed the total mass of the mixture.
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