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WorksheetsMixtures, Solutions, Physical and Chemical change
Total questions: 25
Worksheet time: 24mins
Which of the following is an example of physical change?
burning gas on the stove
cracking an egg
cooking food
rotting apples
To separate a mixture of salt and water what separation tool/method is used?
Evaporation
Magnet
Sieve
Filters
Ice melting is a what type of change?
Chemical change
Physical change
What is a chemical change?
How two chemicals react with one another when combined
A property that we can measure or observe with our 5 senses or other tools
When two chemicals react with one another to form a new substance.
When a change occurs but it does not result in the formation of a new substance
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
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
Observe the picture. What kind of change has the heating of the egg caused?
A solution was formed
There was a chemical change
A mixture was formed
There was a physical change
Which of the following characteristics is shared by all chemical reactions?
Produce a precipitate
Show a color change
Release heat energy
Form new substances
A student added white crystals to a clear liquid. The crystals dissolved in the liquid. After a few seconds, the liquid became quite warm and then turned bright red in color. The first indication that a chemical change was taking place could be observed when -
the crystals were added to the liquid.
the crystals dissolved in the liquid.
the temperature of the liquid increased.
the color of the mixture changed.
A solution is a special mixture formed when one substance is _____________evenly throughout the other.
Dissolved
Disappearing
Spread Out
Put
__________ are made up of solutes and solvents.
solutions
colloids
suspensions
mixtures
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.
How can you increase the concentration of a solution?
add more solute
add less solute
add more solvent
add less solvent
Which of the following is an example of a physical change?
The surface of a copper penny changing colors and tarnishing after being in a drawer for years
Melted butter becoming a solid when placed in the refrigerator
A car rusting when exposed to the air and rain
Bread toasting
Concentration is
the amount of solute in the solvent.
the amount of solvent in the solute
density
particle size
Which solution is more diluted?
Solution 1:
1000 mL of water
60g of salt
Solution 2:
500 mL of water
60 g of salt
Not enough information to tell
Solution 1
Solution 2
They are equally diluted
A salad is an example of a __________.
homogenous mixture
heterogeneous mixture
Colored water is an example of a
homogeneous mixture
heterogeneous mixture
