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 outer electronic structure 3s2 3p5 is possessed, The outer electronic...

The outer electronic structure 3s 2 3p 5    is possessed by: (1) Cl       (2) O        (3) Ar      (4) Br ans:  Cl

Describe molarity and molality, Q. Describe Molarity and Molality and what ...

Q. Describe Molarity and Molality and what is the basic diffrence between Molarity and Molality? The concentration of a solution is usually expressed as molarity (i.e., M). The

CHEMICAL ANALYSIS, I WANT TO DISCUSS ABOUT IRON CHEMICAL ANALYSIS.POSSIBLE ...

I WANT TO DISCUSS ABOUT IRON CHEMICAL ANALYSIS.POSSIBLE THAT?.

Anode mud in electro refinig of copper., Name the common element present in...

Name the common element present in the anode mud in electro refinig of copper. Ans) ANTOMONY ,STRONSIUM,SELENIUM,TELLURIUM,SILVER,GOLD AND PLATINUM . THESE ELELMENTS ,BEING LESS R

Alcoholic acidity, how much percentage alcoholic acidity content in wwheat ...

how much percentage alcoholic acidity content in wwheat flour sample

Noble gases, NOBEL GASES With their closed-shell electron design the nob...

NOBEL GASES With their closed-shell electron design the noble gas elements of group 18 were long regarded as chemically inert. However, in 1962 Bartlett pinpoint that the ioniza

Nacl is dissolved in water the sodium ion, When  Nacl  is dissolved in wat...

When  Nacl  is dissolved in water the sodium ion becomes: (1) Oxidized                                       (2) Reduced   (3) Hydrolysed           (4) Hydr

TGA, factors affecting TGA

factors affecting TGA

By which cycle form a helium nucleus?, Q) Inside the sun four hydrogen nucl...

Q) Inside the sun four hydrogen nuclei combine to form a helium nucleus by which cycle? Ans) Proton-proton cycle.

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