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WorksheetsLockeD! - 5.5C - Mixtures and Solutions #3
Total questions: 20
Worksheet time: 10mins
A worker built a sidewalk and pressed some large salt particles into the concrete while it was still wet. When the concrete was dry, the worker washed the sidewalk with the water. The picture shows the sidewalk after it was washed: What most likely happened to the salt?
It evaporated into a gas
It turned into concrete
It dissolved in the water
It turned into a solid
A student places a sugar cube in a beaker of water. What change will occur?
The sugar cube will not change
More water will be formed
The sugar cube will become smaller
The water will form crystals
This experiment shows how salt water can be boiled and made into freshwater. Which statement about solutions is supported by the diagram?
The parts of a solution must have the same boiling point.
A solution is made up of only one type of particle.
A solution is formed when a liquid changes into a solid.
The parts of a solution can be separated by a physical change.
River water is a solution because it —
is a liquid, which has no definite shape
contains dissolved minerals and salts
carries sand, clay, and other sediment
is a compound made up of two elements
In an activity, 20 grams of salt are dissolved in 70 grams of pure water. The water is then heated on a hot plate. When the water evaporates completely, how much salt will be left?
0 grams
18 grams
20 grams
22 grams
Crystals were grown on a string in a clean glass jar containing sugar dissolved in hot water. The crystals grew on the string for several weeks. What kind of crystals are they?
String
Water
Glass
Sugar
A teaspoon of clean, dry sand is added to a cup of warm saltwater. What is most likely to happen after the mixture is stirred and then placed on a table for five minutes?
The amount of water will increase.
The salt will float to the top.
The sand will settle to the bottom.
The cup will heat up.
Which process will separate the sugar from mixture of sugar and water?
Stirring the mixture
Evaporating the water
Adding more water
Adding more sugar
Which of the following is the best evidence that sugar has dissolved in water?
The sugar seems to disappear in the water
The water temperature increases
Some sugar turns into crystals
Some bubbles form in the water
Which of the following can be separated using the equipment shown above?
A mixture of salt and pepper
A mixture of pepper and water
A mixture of oxygen and water
A mixture of raisins and nuts
If purple drink mix is added to water, what change will occur to the water?
The drink mix will cause the water to freeze
The water will totally disappear
The drink mix will heat the water
The water will change color
A science class mixed a white powder and a clear liquid together in a test tube. The mixture foamed up and flowed over the top of the test tube. What are the two substances MOST likely to be?
salt and water
Salt and vinegar
Baking soda and water
Baking soda and vinegar
Some students wanted to test the rate at which salt dissolves in water. They put 10g of salt and 200 mL of water in each beaker. In which beaker will the salt most easily dissolve?
Beaker K
Beaker L
Beaker M
Beaker N
When sugar seems to disappear in water, it really—
dissolves
condenses
evaporates
precipitates
A tablespoon of sugar is poured into a beaker of warm water and stirred briefly. What change will occur?
The sugar will soak up the water
The water will change colors
The sugar will sink to the bottom
The sugar will dissolve in the water
Which of the following is the best example of the process of dissolving?
Mixing chocolate powder in a glass of milk
Pouring sand into a beaker of warm water
Shaking a bottle of Italian salad dressing
Pouring milk into a cup of hot coffee
What happens to sugar particles as they dissolve in water?
The hot water changes the sugar into a new kind of water
The sugar particles melt very quickly in the hot water
The sugar particles spread out and fill in spaces in the water
The sugar particles are changed into a different kind of matter
Which mixture below is also a solution?
Water and hot chocolate mix
Soil and rocks
Trail mix
Tossed salad (no dressing)
What property of chocolate powder does not change when it dissolves in milk?
Shape
Size
Texture
Taste
When one teaspoon of sugar is mixed into 40 mL of very hot water, what will probably happen to the sugar?
The sugar will dissolve into the water
The sugar will float on top of the water
The sugar will float away with the steam from the water
The sugar and the water will settle into layers
