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

Functional groups - iupac system of naming organic compounds, Functional gr...

Functional groups - IUPAC System of Naming Organic Compounds If a compound involves much more than one functional group, as compared to one of the functional group is considere

Organic, A crucial step in the Robinson annelation is the elimation of an a...

A crucial step in the Robinson annelation is the elimation of an aldol adduct to form an enone. The elimination of an aldol product can occur in base (it occurs even more readily i

S block elements, why lithium and beryllium markedly differ from other memb...

why lithium and beryllium markedly differ from other members of their respective groups?

Electrogravimetry, give instrumentation of electrogravimetry

give instrumentation of electrogravimetry

Nucleophilic aromatic substitution reaction, Nucleophilic aromatic substitu...

Nucleophilic aromatic substitution reaction The product is formed by a nucleophilic aromatic substitution reaction in which chloride is displaced by hydroxide ion.  The product

.bohr''s atomic model, what were the drawbacks of bohr''s atomic theory

what were the drawbacks of bohr''s atomic theory

Determining enthalpy changes, Q. Calculate Enthalpy Changes in system? ...

Q. Calculate Enthalpy Changes in system? Ans. It turns out that you can add reactions the same way you add algebraic equations. The enthalpy of the resulting reaction is the su

Concentration of electrons in the conduction band, Concentration of electro...

Concentration of electrons in the conduction band At equilibrium, there is no net current flowing across p-n junction. Concentration of electrons in the conduction band in cond

Factors affecting chemichal shift ., 1.sheilding & de-sheilding 2.magnetic ...

1.sheilding & de-sheilding 2.magnetic anisotropy 3.hydrogen bonding

Live project, some simple live chemistry projects

some simple live chemistry projects

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