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WorksheetsMixtures/solutions + physical/chemical changes
Total questions: 30
Worksheet time: 2hrs 32mins
Which of the following is an example of physical change?
burning gas on the stove
cracking an egg
cooking food
rotting apples
A combination of two or more substances that can be easily separated is called?
Solution
Colloid
Mixture
Suspension
If you spilled nails in a sandbox, what separation tool/method could you use to clean out the sandbox so it would be safe for children to play in?
Filter
Sieve
Magnet
Evaporation
To separate a mixture of salt and water what separation tool/method is used?
Evaporation
Magnet
Sieve
Filters
What is a substance that is dissolved in another substance?
Solution
Solute
Colloid
Solvent
Which of the following is most likely the reason why the scientists stirred the solution at a high rate of speed?
Stirring allows solvent to be dissolved.
Stirring allows the solute to be more easily dissolved
Stirring allows solute to do the dissolve the solvent.
Stirring allows the solution to be unsaturated.
How can you increase the concentration of a solution?
Add more solute.
Add more solvent.
Increase the amount of water in the solution.
Increase the volume of the solution.
What type of mixture has large enough particles that you can see the different types of particles?
Homogeneous
Heterogeneous
Solution
Colloid
You put a beaker of water with a 10 tablespoon of salt in the sun. After 30 days, you return to find what in the beaker?
The salt would evaporate only leaving water left in the beaker.
The water would evaporate only leaving salt left in the beaker.
Both substances will evaporate overtime.
Nothing will change.
Ice melting is a what type of change?
Chemical change
Physical change
What is a chemical change?
altering an objects' form without creating a new substance
atoms linking together to create a new substance
no new substance is created, but atoms join together
the matter stays the same
Baking a cake by mixing flour, sugar, chocolate powder, eggs, and milk, and then heating them in the oven...is an example of what type of change?
Chemical change
Physical change
What is a physical change?
atoms linking together
a change that alters the form of an object
observation of an object but not changing its identity
observation of a substance changing into a different substance
Stanley left an ice cube on his kitchen counter. An hour later, Stanley observed that the ice cube melted. Which statement best describes this change?
Ice melting is a physical change because a new substance is created.
Ice melting is a chemical change because a new substance is created.
Ice melting is a chemical change because atoms were linked together.
Ice melting is a physical change because its state of matter was changed from a solid to a liquid.
A group of students investigated physical and chemical changes using paper. The students recorded their observations in a table. Which student correctly recorded all the changes that took place?
Student 1
Student 2
Student 3
Student 4
How do you know when you've made a mixture?
When two or more substances physical combine.
When there are two or more natural objects or substances together.
There is one pure substance.
It is a mixture if you can see through it because all mixtures are clear.
Jessica wants to show her classmates an example of a mixture. Which of these is an example Jessica can bring to class?
Salt
Salt water
Coffee
Cold water
What happens to matter during a chemical change?
Atoms are rearranged in order to create a new substance.
Atoms do not rearrange to make a new substance.
Some atoms will be taken away.
All atoms will evaporate.
Anne goes outside to ride her bike after not riding it for some time. She realizes that her bike has begun to rust in some areas. What type of change has Anne's bike experienced?
The rust on her bike is an example of a physical change, because there is a change in color.
The bike hasn't experienced any change.
The rust on her bike is an example of a physical change.
Her bike has rusted meaning it has been chemically changed.
When a mixture is homogeneous, what does that mean?
The mixture is blended together making it look the same everywhere.
The mixture has separate parts that one can plainly see.
The mixture has two substances, one being dissolved into the other substance.
It is a solution of a metal and another solid.
Susan and Ross are performing an experiment. They have 10 grams of water in Beaker 1 and 3 grams of vegetable oil in Beaker 2. According to the law of conservation of mass, what is the total mass of the substances when combined?
7 grams
13 grams
3 grams
30 grams
What solution is the most concentrated?
Solution 2
Solution 4
Solution 6
Solution 8
If sugar and sand are placed at the bottom of beaker filled with water. Heat is added to the beaker, while the water is being stirred. What will happen to the sugar and sand in this experiment?
Both the sugar and sand will settle at the bottom of the beaker, because neither substance can be dissolved by the water.
The sugar will be dissolved into the water, while the sand settles on the bottom of the beaker.
The sugar will begin to evaporate in to the air, and the sand will rest on the bottom of the beaker.
The sand will dissolve into the water, and the sugar will settle at the bottom of the beaker.
If Kelly wants to speed up the process of sugar dissolving into her glass of water, what could help her make the process go faster?
Pour more water in her glass.
Add more sugar to her solution.
Add heat to the water in her glass.
Take out some of the water in her glass.
Which of the following are examples of chemical changes?
Blow drying your wet hair.
Slicing an apple.
Baking powder releasing carbon dioxide bubbles.
Coiling a straight wire to make a spring.
Observing silver spoons that have collecting dark spots on them and have become dull over time.
How is magnetism an example of separating a mixture?
You are separating substances by different sizes.
You are separating nonmetals from substances that are metals.
You are separating substances based on their density.
You are separating substances through filters.
Sodium metal reacts with Chlorine gas to produce salt (Sodium Chloride). If 17.5 grams of Chlorine produces 23.5 grams of salt, how much Sodium is needed?
6.0 grams
17.5 grams
23.5 grams
41.0 grams
In a chemical reaction, 4 grams of sodium must combine with how many grams of chlorine to produce 10 grams of table salt?
4 grams
6 grams
8 grams
10 grams
Based on the Law of Conservation of Mass, how many grams of Magnesium that will react with all 6.0 grams of Oxygen to produce 20.4 grams of Magnesium Oxide?
3.4 grams
14.4 grams
20.4 grams
26.4 grams
At 80 degrees Celsius, 160 grams of solute can be dissolved.
What solution does this statement describe? Use the graph to determine the correct answer.
Potassium Nitrate (KNO3)
Potassium Chloride (KCl)
Sodium Chloride (NaCl)
