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Chapters
2: Electricity
▶ 3: Changes Around Us
4: Air
5: The Cell
6: Human Organ systems
7: Parts of Computer
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Solutions for Chapter 3: Changes Around Us
Below listed, you can find solutions for Chapter 3 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Science - Term 2 [English] Class 6 TN Board.
Samacheer Kalvi solutions for Science - Term 2 [English] Class 6 TN Board 3 Changes Around Us Evaluation [Pages 39 - 40]
Choose the appropriate answer
When ice melts to form water, change occurs in its
position
colour
physical state
composition
Drying of wet clothes in air is an example of
Chemical change
Undesirable change
Irreversible change
physical change
Formation of curd from milk is
a reversible change
a fast change
an irreversible change
an undesirable change
Out of the following an example of a desirable change is
rusting
change of seasons
earthquake
flooding
Air pollution leading to acid rain is a
reversible change
fast change
natural change
human made change
Fill in the blanks.
Magnet attracts iron needle.This is ______ change.
a reversible
an irreversible
Boiling of egg results in ______ change.
a reversible
an irreversible
Changes that are harmful to us are ______.
desirable
undesirable
Plants convert carbon-di-oxide and water into starch. This is an example of ______ change.
natural
human made
Bursting of fire crackers is a ______ change whereas germination of seeds is a ______ change.
True or False. If False, give the correct statement
Growing of teeth in an infant is slow change.
True
False
Burning of match stick is a reversible change.
True
False
Change of new moon to full moon is human made.
True
False
Digestion of food is a physical change.
True
False
In a solution of salt in water, water is the solute
True
False
Analogy
Curdling of milk : irreversible change :: Formation of clouds : ________change
Analogy
Photosynthesis : __________ change :: burning of coal : Human – made change
Analogy
Dissolution of glucose : reversible change :: Digestion of food: ___________ change
Analogy
Cooking of food : desirable change :: decaying of food : _______ change
Analogy
Burning of matchstick: _______ change: Rotation of the Earth: Slow change
Circle the odd one out. Give reason for your choice
Growth of a child
Blinking of eye
Rusting
Germination of a seed
Circle the odd one out. Give reason for your choice
Glowing of a bulb
lighting of a Candle
breaking of a coffee mug
curdling of milk
Circle the odd one out. Give reason for your choice
Rotting of an egg
condensation of water vapour
trimming of hair
Ripening of fruit
Choose the odd one out. Give reason for your choice.
Inflating a balloon
popping a balloon
fading of wall paint
burning of kerosene
Give very short answer
What kind of a change is associated with decaying of a plants?
You are given some candle wax. Can you make a candle doll from it? What kind of change is this?
Define a slow change.
What happens when cane sugar is strongly heated? Mention any two changes in it.
What is a solution?
Give short answer
What happen when paper is burnt? Explain.
Can deforestation be considered a desirable change? Explain.
What type of changes is associated with the germination of a seed? Explain
Give one example for each case that happens around you.
- Slow and fast change
- Reversible and irreversible change
- Physical and chemical change
- Natural and man-made change
- Desirable and undesirable change
Question based on Higher Order Thinking Skills
When a candle is lit the following changes are observed.
- Wax melts.
- Candle keeps burning.
- The size of the candle decreases.
- The molten wax solidifies
- Which of the changes can be reversed? Justify your answer
Solutions for 3: Changes Around Us
Samacheer Kalvi solutions for Science - Term 2 [English] Class 6 TN Board chapter 3 - Changes Around Us
Shaalaa.com has the Tamil Nadu Board of Secondary Education Mathematics Science - Term 2 [English] Class 6 TN Board Tamil Nadu Board of Secondary Education solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Samacheer Kalvi solutions for Mathematics Science - Term 2 [English] Class 6 TN Board Tamil Nadu Board of Secondary Education 3 (Changes Around Us) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
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Concepts covered in Science - Term 2 [English] Class 6 TN Board chapter 3 Changes Around Us are Heat and change of physical state, Changes-Physical and Chemical, Classification of Change: Slow and Fast Changes, Classification of Change: Natural and Man-made Changes, Classification of Change: Periodic and Non-periodic Changes, Classification of Change: Desirable and Undesirable Changes, Classification of Change: Reversible and Irreversible Changes, Classification of Change: Physical Changes, Concept of Evaporation, Concept of Melting (Fusion), Concept of Boiling (Vaporization), Concept of Freezing (Solidification), Concept of Sublimation, Concept of Desublimation (Deposition), Concept of Condensation (Liquefaction), Components of Solutions, Chemical Reaction.
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