NEW
Font size
WorksheetsChemical & Physical Changes
Total questions: 47
Worksheet time: 25mins
Cooking an egg
Chemical
Physical
Melting Chocolate
Chemical
Physical
Evaporating Water
Chemical
Physical
Bike rusting
Chemical
Physical
Crushing a can
Chemical
Physical
Boiling water
Chemical
Physical
Digesting food
Chemical
Physical
Melting Wax
Chemical
Physical
A student mixes yellow powder with water. Which observation would prove a CHEMICAL change occurred?
The powder DISSOLVED in the water
The water turned the COLOR yellow
The water's TEMPERATURE changed
The STATE OF MATTER changed
Which of the following examples provides evidence of a PHYSICAL change?
Wood is burned and releases ash and smoke
Iron rusts over time
When mixed, baking soda and vinegar form gas bubbles
Boiling water bubbles when heated
When mixing milk and vinegar, a white, chunky, solid substance is formed. What has occurred?
Physical change: state of matter
Chemical change: precipitate
Physical change: freezing
Chemical change: new gas
You mix a yellow powder and a clear liquid. The liquid turns light yellow and the powder seems to disappear. This is a...
Endothermic Chemical Change
Exothermic Chemical Change
Physical Change
Condensation on a glass
Physical Change
Chemical Change
Which is the best example of a new substance forming?
lighting a match
cutting a piece of paper
popping a balloon
hitting a nail with a hammer
A white tablet is dropped into water. The water becomes cloudy and bubbles are produced. What type of change has occurred?
Physical change
Chemical change
No change
Which observations prove a chemical change occurred
Dissolving and expected color change
Mixing and dissolving
State of matter change and boiling water bubbles
Unexpected color change and temperature change
Students mixed two liquids in a beaker and listed their observations. Based on these observations, which statement contains the best evidence that a chemical reaction occurred?
There is a change in shape.
There is a change in volume.
The two liquids mix into a solution.
The two liquids form a new substance.
Which statement best describes evidence that a chemical reaction occurs as a cake bakes?
The water in the cake batter evaporates.
The cake rises as gas bubbles form in the baking cake.
The cake takes the shape of the container in which it is baked.
The water in the cake batter is used to keep the cake moist as it bakes.
When a PRECIPITATE forms, this is a sign of a...
Chemical Change
Physical Change
Atomic Charge
Water Change
What is true of ALL Chemical reactions?
Produce gas
Change color
Form new substances
Create a precipitate
A change in the state of matter is evidence of a chemical change.
True
False
Mixing food coloring and water is an example of a change.
Physical
Chemical
Which is an example of a physical change?
a candle burning
rust on a bicycle
ice cream melting
a firework exploding
Which kind of change alters the shape of an object without changing what type of matter it is?
chemical change
physical change
gradual change
sudden change
Choose the best description below for the image
physical change
chemical change
A granular substance is added to a liquid. Which of the following would provide evidence to suggest a chemical change has taken place?
the liquid gives off heat
the granules dissolve completely
the volume of the liquid increases
the granules seem to get smaller
Iodine gas has a purple color.
physical property
chemical property
Baking soda reacts with vinegar
Physical Property
Chemical Property
The mass of the NaCl sample is 20 g
Physical Property
Chemical Property
Which of the following is a physical change that might occur because of a decrease in temperature?
Fallen leaves decay faster
Eggs are cooked and become solid.
Solid butter melts into a liquid.
Water vapor condenses into liquid water.
Small gold flakes are removed from a water solution by filtering the solution.
This is an example of a
change of state.
chemical change.
physical change.
change of form.
Mandy places a stick of solid butter in the microwave. She turns the microwave on and then removes the butter a minute later. The butter has now melted into a liquid.
The butter has gone through a _____ change because of _____.
chemical; the heat made by the microwave
physical; the heat made by the microwave
chemical; the chemicals in the butter
physical; the chemicals in the butter
A chemical change
changes matter from one form to another.
creates matter.
does not change matter in any way.
destroys matter.
Julie measured out 10.5 ounces of water. Then she measured 3.5 ounces of lemon juice. She added the lemon juice to the water and stirred until they were completely mixed.
What was the weight of the final mixture?
3.5 ounces
14.0 ounces
7.0 ounces
10.5 ounces
A block of ice has a weight of 35 g. If the block of ice melts, what is the weight of the liquid water that is formed?
less than 35 g
more than 35 g
exactly 35 g
There is not enough information to calculate the weight.
Lyle stirs 5 grams of salt into a beaker of water. He then adds 15 grams of pure iodine to the mixture.
If the total weight of the new mixture is 225 grams, what is the weight of the water?
200 grams
20 grams
100 grams
205 grams
When substances go through chemical changes, which of the following will always happen?
One or more substances with different chemical properties will form.
A gas will form or a white solid will precipitate.
Exactly one new substance will form and one will be destroyed.
One or more substances will be completely destroyed.
When a small piece of white marble rock is carefully placed in a beaker of hydrochloric acid, bubbles form on the surface of the rock and rise to the top of the liquid.
Which conclusion best fits this observation?
The rock reacted with the acid and made a new gaseous substance.
The rock dissolved in the acid by breaking into its smallest pieces.
The rock was changed by the acid into its gaseous form.
The rock heated the acid until it began to boil.
Hydrogen gas (H2) and oxygen gas (O2) react to form liquid hydrogen peroxide (H2O2).
Which statement is true about the reaction?
The same atoms are present, so the chemical properties are the same.
The atoms of the reactants have combined to form a new substance.
The product that is formed has the same physical properties as the reactants.
The two gases have mixed together, but a new substance has not formed.
According to the law of conservation of matter, which statement about chemical reactions is true?
Atoms are created by some reactions and destroyed by others.
Atoms cannot be created or destroyed by chemical reactions.
Energy is created as atoms are destroyed in chemical reactions.
Every atom destroyed in a chemical reaction must be replaced.
Stacey is baking a cake. She mixes flour, water, eggs, oil, and sugar together in a large bowl to form a mixture. Then, Stacey places the mixture in a cake pan and bakes the cake for 30 minutes.
Which of the following is true about the properties of the cake after it is baked?
The properties of the baked cake are different than the properties of the unbaked mixture.
The properties of the baked cake are the same as the properties of the flour only.
The properties of the baked cake will only change if the cake is baked for less than 15 minutes.
The properties of the baked cake are the same as the properties of the unbaked mixture.
Shannon broke her pencil into 4 pieces and found the mass of each piece.
Using the picture, what is the mass of the whole pencil before Shannon broke it?
20 g
18 g
23 g
The mass cannot be determined.
Sugar is heated until it turns into a brown caramel sauce.
Chemical Change
Physical Change
Chemical and Physical Change
Which sentence about physical and chemical changes is true?
Both create a new substance.
Neither creates a new substance.
A physical change creates a new substance, but a chemical change does not.
A chemical change creates a new substance, but a physical change does not.
