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What people are asking?

Raghavendra Paripelli

Apr 9, 2014

Distinguish between them with examples.

This answer has an image. Please click on the question to read more.

Answer (5)

Aena

Oct 21, 2013

PLEASE TELL ME MY CLASS TEACHER NEVER TELLS.....

Answer.

Tearing of a paper is a physical change because when the paper is torn only the appearance of the paper is changed and no new substance is formed. Since this is...

Answer (29)

Amogh Sahhai

Jan 11, 2015

What is the differance between
a)fast and slow change
b)reversible and irreversible change
c)chemical and physical
d)desirable and non-desirable change
e)natural and man-made change
f)periodic and non - periodic change

a) Fast changes occur with in seconds or minutes. Whereas slow changes take place...

Answer (1)

Akshaya

Mar 8, 2015

when a candle burns, both physical & chemical changes occur.explain where in the candle these two changes occur.

This answer has an image. Please click on the question to read more.

Answer (2)

Lokesh

Sep 6, 2015

Define reversible change

A reversible change is a physical change that can be undone. A final substance can be converted back to the original substance without creating any new material.
Freezing, me...

Answer (4)

Baij Nath

Jan 10, 2015

Why is metal rim heated before fixing on to wooden cart wheel?

Answer.

Metals expand on heating and contract on cooling. This expansi...

Answer (2)

Akshaya

Mar 8, 2015

Explain when a candle burns,both physical and chemical changes occur. Where in the candle do these changes occur in ?

Answer.

    When a candle burns both physical and chemical changes occur as candle wax turns in liquid form and this is a physical changes  ...

Answer (3)

Sanjeev Tiwari

Jul 13, 2014

Formation of curd is irreversible and chhemical change. Give reason for this statement

Answer.

Due to the lactobacillus bacteria  the curd ...

Answer (4)

Yogesh Kshirsagar

Nov 25, 2016

what is a slow change

Answer (1)

ISHAN SINGH

Dec 27, 2015

what is perdiodic change

Periodic changes are changes that  occur or repeated at regular intervals  of time.
Examples of periodic changes:

Answer (2)

Raghavendra Paripelli

Apr 9, 2014

Distinguish between them with examples.

This answer has an image. Please click on the question to read more.

Answer (5)

Aena

Oct 21, 2013

PLEASE TELL ME MY CLASS TEACHER NEVER TELLS.....

Answer.

Tearing of a paper is a physical change because when the paper is torn only the appearance of the paper is changed and no new substance is formed. Since this is...

Answer (29)

Amogh Sahhai

Jan 11, 2015

What is the differance between
a)fast and slow change
b)reversible and irreversible change
c)chemical and physical
d)desirable and non-desirable change
e)natural and man-made change
f)periodic and non - periodic change

a) Fast changes occur with in seconds or minutes. Whereas slow changes take place...

Answer (1)

Akshaya

Mar 8, 2015

when a candle burns, both physical & chemical changes occur.explain where in the candle these two changes occur.

This answer has an image. Please click on the question to read more.

Answer (2)

Lokesh

Sep 6, 2015

Define reversible change

A reversible change is a physical change that can be undone. A final substance can be converted back to the original substance without creating any new material.
Freezing, me...

Answer (4)

Baij Nath

Jan 10, 2015

Why is metal rim heated before fixing on to wooden cart wheel?

Answer.

Metals expand on heating and contract on cooling. This expansi...

Answer (2)

Akshaya

Mar 8, 2015

Explain when a candle burns,both physical and chemical changes occur. Where in the candle do these changes occur in ?

Answer.

    When a candle burns both physical and chemical changes occur as candle wax turns in liquid form and this is a physical changes  ...

Answer (3)

Sanjeev Tiwari

Jul 13, 2014

Formation of curd is irreversible and chhemical change. Give reason for this statement

Answer.

Due to the lactobacillus bacteria  the curd ...

Answer (4)

Yogesh Kshirsagar

Nov 25, 2016

what is a slow change

Answer (1)

ISHAN SINGH

Dec 27, 2015

what is perdiodic change

Periodic changes are changes that  occur or repeated at regular intervals  of time.
Examples of periodic changes:

Answer (2)

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