Describe processes are endothermic or exothermic, Chemistry

Assignment Help:

From personal experience, describe whether these processes are endothermic or exothermic. Give a reason for each.

      a. A charcoal briquette burns.

      b. Ice melts.

      c. Water evaporates from your skin.

      d. Wood burns.

Answer:

      a. Exothermic. A charcoal briquette releases heat as it burns.

      b. Endothermic. Water absorbs the heat essential for evaporation from your skin, and your skin feels cooler.

      c. Endothermic. Ice absorbs the essential heat from the environment to melt.

      d. Exothermic. Wood releases heat as it burns.


Related Discussions:- Describe processes are endothermic or exothermic

The difference in the value of electron egativities, For the formation of c...

For the formation of covalent bond, the difference in the value of electron egativities should be: (1) Equal to or less than 1.7         (2) More than 1.7  (3) 1.7 or mor

Existence of positively charged nucleus was established by, Existence of po...

Existence of positively charged nucleus was established by: (1) Positive ray analysis   (2) α -ray scattering experiments    () X-ray analysis (4) Discharge tube exper

The following set of quantum numbers is possible, Which of the following se...

Which of the following set of quantum numbers is possible: (1) n=3, l=2, m=2,and s = +1/2  (2) n=3, l=4, m=0,and s = -1/2            (3) n=3, l=2, m=2,and s = +1/2  (4

Chemical, What is the use of bhc

What is the use of bhc

Limitations of hybrid orbitals, Q. Limitations of Hybrid orbitals? ...

Q. Limitations of Hybrid orbitals? It gives no idea whether a particular metal ion would prefer to have any particular geometry say, an octahedral or tetrahedral with a giv

Explain about sulphuric acid, Q. Explain about Sulphuric Acid? Sulphuri...

Q. Explain about Sulphuric Acid? Sulphuric acid is one of the most important chemicals, both in industry as well as in the laboratory. Two methods are industrially used for

Peptide bonds, how is a peptide bond made through dehydration, showing a co...

how is a peptide bond made through dehydration, showing a complete chemical equation

Law of conservation of mass, what are the applications of law of conservati...

what are the applications of law of conservation of mass ?

Alkanes, define alkanes and explain classification of alkanes.

define alkanes and explain classification of alkanes.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd