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WorksheetsPhysical and Chemical changes
Total questions: 35
Worksheet time: 18mins
A physical change...
changes the physical properties of an object, but does not create a new substance.
creates a new substance and cannot be undone.
A chemical change
changes the physical properties of an object, but does not create a new substance.
creates a new substance and cannot be undone.
Is this an example of a physical or chemical change?
physical
chemical
Is this an example of a physical or chemical change?
physical
chemical
Is this an example of a physical or chemical change?
physical
chemical
Is this an example of a physical or chemical change?
physical
chemical
Every chemical change involves a transfer of ______.
mass
volume
density
energy
Wood is chopped into small pieces. Then, it is burned to cook food. This is an example of a ____ change followed by a ____ change.
chemical, physical
physical, chemical
physical, physical
chemical, chemical
What type of change has occurred?
Chemical
Physical
Select ALL of the characteristics of a physical change
changes in appearance only
a new substance is not created
changes in the ph level
burning and fire
chemical bonds are not created or broken
Which below are types of physical properties:
density
color change
temperature
mallelable
solubility
Which of the following are examples of chemical properties (more than one)
combusts
reacts with water and oxygen
ductile
is weighed in grams
has a sour taste
A new substance is formed in a physical change.
true
false
A chemical change does not have to do with phase changes.
true
false
This is an example of a _________ change.
physical
chemical
An element is
anything that takes up space
a substance made up of atoms of only one kind
two or more different elements in exact proportion
A compound is
anything that takes up space
a substance made up of atoms of only one kind
two or more different elements in exact proportion
CHEMICAL CHANGE IS REVERSIBLE
TRUE
FALSE
What is an exothermic change
A change that can be reversed
A change that is useful
A change in which heat is released
A change in which heat is absorbed
What is sublimation
Gas-Liquid
Gas-Solid
Liquid-Solid
Solid-Gas
What type of change is boiling of an egg
Chemical
Irreversible
Useful
All of these
Which of the following is a Periodic change
Tides
Building of Dam
Cutting of tree
None of these
Which of the following is an irreversible change
Melting Of Tar
Rolling of paper
Boiling of water
Milk to Curd
What type of Change is Rusting Of Iron
Irreversible
Physical
Periodic
All of these
Which of the following is the correct type of change of building a dam
Manmade
Reversible
Chemical
Desirable
What is the correct meaning of Galvanization
Coating metal with its own oxide to make it more durable
Mainly coating Aluminium with zinc to prevent corrosion or rusting
Coating a metal with a layer of zinc to prevent corrosion or rusting
Mainly coating Aluminium with its own oxide to make it more durable
Which of the following examples has more than one type of changes(VERY BASIC)
Tearing a Piece of Paper
Folding paper
Baking Of Cake
Milk To Paneer
How many types of common changes are there
14
16
12
10
During condensation and evaporation of water, the ________ of water changes.
Appearance
State
Movement
The_______ balloon changes when we blow the air.
Color
Shape
Rolling of chapathi and baking oh chapathi are the changes that,
Can be reversed
Cannot be reversed
Can be reversed and cannot be reversed
Cannot be reversed and can be reversed
Increase in the volume of substances on heating,the substance will show the change in,
Extension
Expansion
Exclusion
Which of the following changes cannot be reversed?
Milk to paneer
Cold milk to hot milk
Yarn to knitted sweater
Wet clothes to dry clothes
Which of the following can be reversed?
Raw egg to boiled egg
Wet clothes to dry clothes
Bud of a flower
Cow dung to bio-gas
A bag of cement lying in the open gets wet due to rain during night time. The next day sun shines brightly. Do you think the changes that have occured in the cement can be reversed?
Yes
No
