No products in the cart.

  1. Homework Help
  2. CBSE
  3. Class 07
  4. Science

What is a physical changes and …

CBSE, JEE, NEET, CUET

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

Install Now
What is a physical changes and chemical changes give two example of physical changes and two example of chemical changes

    • Posted by Purv Patel 2 years ago

    CBSE > Class 07 > Science
    • 2 answers

    Preeti Dabral 2 years ago

    1. A change in which the molecules are rearranged, but their internal composition remains same is called Physical Change. A process in which the substance transforms into a new substance, having a different chemical composition, it is known as Chemical Change.
    2. Some common examples of physical change vaporisation, condensation, freezing/melting/boiling of water. On the contrary, the examples of chemical change are combustion, metabolism, cooking of egg, etc.
    3. Physical change is a temporary; they are easily reversible. As against this, the chemical change is permanent in nature, i.e. they cannot be reversed, even by reversing conditions.
    4. In the physical change, only the form of the substance is changed, but no new product is formed. On the other hand, when there is a chemical reaction, a completely different product is formed, whose properties are completely different from that of the reacting substances.
    5. In a physical change, the original matter can be recovered, by simple physical methods. As opposed, in chemical change the original matter no longer exist, and so it cannot be recovered.
    6. In the physical change, change in the physical attributes of the substance is observed, such as shape, size, appearance, texture, odour, density and so on. Conversely, chemical change involves the change in chemical properties of the substance, i.e. change in its chemical nature.
    7. In the physical change, no or very little amount of energy is absorbed or given out as heat, light or sound energy. Unlike chemical change, wherein enormous energy is absorbed or given out as heat, light or sound energy

    0Thank You

    Kadari Harshith 2 years ago

    Urbjur

    0Thank You

    ANSWER
    http://mycbseguide.com/examin8/

    Related Questions

    This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

    Few rules to keep homework help section safe, clean and informative.
    • Don't post personal information, mobile numbers and other details.
    • Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
    • Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
    • Ask specific question which are clear and concise.

    Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

    Posted by Kanika Pal 4 months, 1 week ago

    CBSE > Class 07 > Science
    • 0 answers
    WHAT IS DIFFERENCE BETWEEN STRONG ACID AND WEAK ACID?

    • Posted by Mitali Hude 4 months ago

    CBSE > Class 07 > Science
    • 2 answers
    Show with the help of a sketch that plants are the ultimate source of food I can't understand this

    • Posted by Mn Bhushanam 2 months, 2 weeks ago

    CBSE > Class 07 > Science
    • 0 answers
    Name the digestive gland that breakdown the stretch into sugar be secreted byju's

    • Posted by Abhijot Pannu 4 months, 1 week ago

    CBSE > Class 07 > Science
    • 0 answers
    The gallbladder of a person is removed which of the following food should he avoid having in access oily food pulses or sugar rich foods

    • Posted by Shreya Bagali 4 months, 1 week ago

    CBSE > Class 07 > Science
    • 1 answers
    Give examples of physical and chemical changes

    • Posted by Aman Rai 4 months, 1 week ago

    CBSE > Class 07 > Science
    • 1 answers
    This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

    Few rules to keep homework help section safe, clean and informative.
    • Don't post personal information, mobile numbers and other details.
    • Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
    • Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
    • Ask specific question which are clear and concise.

    Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

    Posted by Mitali Hude 4 months, 1 week ago

    CBSE > Class 07 > Science
    • 1 answers
    Name the three temperature scales . Write the relationship between them.

    • Posted by Ashmeet Kaur Kaur 4 months ago

    CBSE > Class 07 > Science
    • 4 answers
    Describe the photosynthesis process

    • Posted by Inchara Dodmani 4 months ago

    CBSE > Class 07 > Science
    • 2 answers
    What is meant by 'basicity' of an acid

    • Posted by Shivam 123 4 months, 1 week ago

    CBSE > Class 07 > Science
    • 2 answers

    myCBSEguide App

    myCBSEguide

    Trusted by 1 Crore+ Students

    Install Now

    Test Generator

    Test Generator

    Create papers online. It's FREE.

    Try Now

    CUET Mock Tests

    CUET Mock Tests

    75,000+ questions to practice only on myCBSEguide app

    Install Now
    Google Play

    Download myCBSEguide App

    All Courses

    Other Websites

    CBSE Courses

    Resources

    Corporate

    NCERT Solutions

    CBSE Sample Papers

    All Content and Intellectual Property is under Copyright Protection | myCBSEguide.com ©2007-2024