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WorksheetsPhysical / Chemical Changes
Total questions: 58
Worksheet time: 29mins
A green powder is heated & a gas is given off while it turns to a black solid. This describes
Physical Change
Chemical Change
Change in State
Change in Temperature
Which of the following could indicate that a chemical change took place?
Change in color
Production of Energy
Formation of Gas
All are correct
The difference between a Physical change and a Chemical change is…
Physical change is only a change to the outside appearance.
Chemical change is when matter is changed into something new.
Atoms are rearranged in chemical changes & not in physical.
All are correct.
Which type of change is most often easily reversed?
Chemical
Physical
Both a physical and chemical change.
Neither a physical or chemical change.
Identify what type of change happening in the picture below...
Chemical Change
Physical Change
Endothermic Reaction
Exothermic Reaction
Identify what type of change happening in the picture below...
Chemical Change
Physical Change
Endothermic Reaction
Exothermic Reaction
Identify what type of change happening in the picture below...
Chemical Reaction
Physical Change
Change in State
Change in appearance only
If the chemical properties of a substance remain unchanged & the appearance or shape of an substance changes it is a...
Chemical Change
Physical Change
Both a physical and chemical change.
Neither a physical or chemical change.
Which of the following is an example of a physical change?
A glass falling and shattering on the floor.
Baking a birthday cake.
Burning a piece of paper.
Baking soda and vinegar mixing together.
When a new substance is formed with different properties than the original substance it is called a...
Chemical change
Physical change
Change in State
Change in appearance only.
Which type of change are irreversible?
Chemical Changes
Physical Changes
Changes in State
Changes in Temperature
Which is not a clue that could indicate a chemical change has occurred?
Change in color
Change in shape
Release of energy
Formation of an odor
Which of these actions cause a PHYSICAL change?
rusting of metal pipes
burning a log
cooking an egg
crushing an aluminum can
Rusting metal is an example of a ____ change.
chemical
phase
state
physical
Salt water, a mixture, is made by dissolving salt in water. Mixtures like this can be separated by using the physical properties of the mixture. Which would be the best way to separate a mixture made of salt and water?
evaporation
chromotography
magnetism
filtering
Josh decided to mix some vinegar with baking soda. He knew that a reaction occurred because he made careful observations. He noted that the mixture started to foam up and bubble, and it was white in color. How did Josh know that a chemical reaction occurred?
He was sure a reaction occurred because of
the color of the mixture
the smell of the vinegar
the volume of the mixture
the formation of a gas
Which is an example of a chemical change?
baking a cake
ripping paper
stretching a rubber band
chopping wood
What physical property would you use to separate these jelly beans?
length
mass
color
texture
Use the basic properties of solids, liquids, and gases to identify the correct state of matter in the image.
(A) gas, (B) liquid, (C) solid
(A) solid, (B) liquid, (C) gas
(A) liquid, (B) solid, (C) gas
(A) solid, (B) gas, (C) liquid
Casey is given a sample mixture. Which component could be separated with a magnet?
calcium carbonate
glucose
iron filings
silica sand
Mary collected some pond water to analyze in the science lab. She noticed that the water container had some sand at the bottom and bits of wood floating on top. How can Mary easily separate the sand from the water?
filter out the sand
pick out the sand
evaporate the water
shake the water and pour off the sand
Franklin stores a gallon of milk in the refrigerator. Three weeks later, he notices that the milk has frozen on the top layer and also smells strongly of a sour odor. Which statement justifies that a physical change has occurred in the milk?
There is less milk since some of it froze.
There is a bacterial culture growing in the milk causing the sour smell.
The frozen layer on top of the milk can melt into liquid when left at room temperature.
Some of the milk sugar has been lost, leading to a more sour smell and taste
Choose all three examples of a chemical change.
ice melts in the hot sun
a dead rabbit decomposes
a tree is burned in the forest
a block of cheese is cut in half
the top of a metal fence rusts
alters the form of an object without changing the type of matter; reversible
chemical change
solution
physical change
reactant
A new substance is created; CAN NOT be reversed
chemical change
physical change
product
evaporation
This is the property of matter that can be identified without changing the identity of the substance
product
physical property
solution
cooking
This is the process of matter changing from the solid to the liquid state
melting
rusting
precipitate
product
Part of the water cycle where water changes from a liquid to a gas.
solution
evaporation
rusting
burning
The chemical reaction between iron and oxygen in the air that degrades iron objects
burning
rusting
cooking
evaporation
A type of chemical change that includes the practice or skill of preparing food by combining and heating ingredients.
rusting
melting
product
cooking
Chemical reaction between a flammable material and oxygen that usually produces fire and smoke
burning
precipitate
reactant
product
Cutting your hair is a
physical change
chemical change
Mixing sugar and water is a
chemical change
physical change
Baking soda reacts with vinegar to form a gas is a
physical change
chemical change
A piece of metal is bent in half.
physical change
chemical change
Copper turns green when exposed to the environment.
chemical change
physical change
A tree burns to form ashes.
chemical change
physical change
A piece of paper is crumbled up.
physical change
chemical change
Fizzing or foaming is evidence that a chemical change may have occurred.
True
False
Water freezes to form ice.
physical change
chemical change
Is tea a mixture or a solution?
Mixture
Solution
Is soap a mixture or solution?
Mixture
Solution
What is a mixture?
The combination of two or more substances.
An ingredient.
A liquid.
A gas.
Is fruit salad a mixture or solution?
Mixture
Solution
What is a solution?
A type of mixture where one substance dissolves in another
An ingredient.
A liquid.
A gas.
Is Kool-Aid a mixture or a solution?
Mixture
Solution
How can we remove sand from a sand and water mixture?
Hands
Filter
Magnet
Is salad a mixture or a solution?
Mixture
Solution
How can we remove sugar from a sugar water solution?
Melting
Magnet
Put it out in the sun / heat it up / Evaporation
Tweezers
Is oil and water a mixture or a solution?
Mixture
Solution
In a mixture, the properties of a substance ______________
do not change
change forms
turn into a liquid
become solid
Is cereal a mixture or solution?
Mixture
Solution
Mixtures are _________
easily separated
impossible to separate
always solutions
only liquids
Is sand and iron filings a mixture or solution?
Mixture
Solution
When a substance dissolves, that means its particles _________.
spread out evenly
disappear
turn into water
What comes down but never goes up?
Storm
Wind
Rain
Water
What is He?
green grocer
merchant
fruit - seller
cashier
What kind of tree can you carry in your hand?
A maple
A palm
A coconut tree
An Acacia
