A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei (no change to the elements present), and can often be described by a chemical equation. Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur.
The substance (or substances) initially involved in a chemical reaction are called reactants or reagents. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Reactions often consist of a sequence of individual sub-steps, the so-called elementary reactions, and the information on the precise course of action is part of the reaction mechanism. Chemical reactions are described with chemical equations, which symbolically present the starting materials, end products, and sometimes intermediate products and reaction conditions.
Chemical reactions happen at a characteristic reaction rate at a given temperature and chemical concentration. Typically, reaction rates increase with increasing temperature because there is more thermal energy available to reach the activation energy necessary for breaking bonds between atoms.
Reactions may proceed in the forward or reverse direction until they go to completion or reach equilibrium. Reactions that proceed in the forward direction to approach equilibrium are often described as spontaneous and reduce the free energy if they occur at constant temperature and pressure. Non-spontaneous reactions require input of energy to go forward (examples include charging a battery driven by an external electrical power source, or photosynthesis driven by absorption of electromagnetic radiation usually in the form of sunlight).
A reaction may be classified as redox in which oxidation and reduction occur or nonredox in which there is no oxidation and reduction occurring. Most simple redox reactions may be classified as combination, decomposition, or single displacement reactions.
Different chemical reactions are used during chemical synthesis in order to obtain a desired product. In biochemistry, a consecutive series of chemical reactions (where the product of one reaction is the reactant of the next reaction) form metabolic pathways. These reactions are often catalyzed by protein enzymes. Enzymes increase the rates of biochemical reactions, so that metabolic syntheses and decompositions impossible under ordinary conditions can occur at the temperature and concentrations present within a cell.
The general concept of a chemical reaction has been extended to reactions between entities smaller than atoms, including nuclear reactions, radioactive decays, and reactions between elementary particles, as described by quantum field theory.
Stranger things
Film Analysis Paper
How to make one:
Write your initial thoughts and opinions about the film.
See how your film connects to your module Question document examination
•Summarise your plot
Wite quick descriptions of the main/important characters:
Jot down the film's themes...
download DJ Liker in play store
tapos open niyo then log in Facebook account (gamit kayo new/old dummy account)
after malog in click niyo yang exchange reaction mwehehehe
tapos lagay mo yung link at kung anong reaction gusto mo sabay click nung i am not a robot hanggang magcheck...
When you make your morning toast, you are actually witnessing an act of science called the Maillard reaction. As The Atlantic reports, "amino acids and sugars interact to produce the characteristic brown color, texture, and flavor we know as toast. The Maillard reaction is also responsible for...
nabawasan reacction points and
nawala ung mga DM messages ko dito
sa PHC wala naman ako nilabag na rules or something
anyone ??
ako lang ba or may iba din or bug lang?
sir Draft may prob ba sa system sir wala rin kasi ako nakita recent announcement
Hello po mga ka-PHC, pwede po kaya dito magpost ng campaign para sa facebook voting? Kasali kasi sa pageant mga pamangkin ko and kailangan nila mangalap ng votes for social media choice. baka po matulungan ninyo ako thank you po.
Mga lods bakitt kaya ganon ang profile ko di nag uupdate ang reaction count kahit nakapag react na ako ng ibang posts... Ok naman yun post count nadadagdagan... Any thoughts? TIA
Good aftie all
Need ko reaction ninyo mga boss.
May jowa kasi ako (pending status 😅)
single mom sya. ang prob is gusto makipag communicate ng ex nya para sa bata nila at gusto rin ni jowa. inamin nya saken at ma aware daw ako. 2 months plang silang hiwalay pala. ako naman lutang din kung ano...
Sorry wala akong ideya..
Pero paano po mapapataas yung reaction points ko, nakailang reacts na ako sa mga post pero 32 pa rin? Decided po akong maging elite user after 4 years 😂😂😂
Sinasabi na walang bagay sa mundo ang permaninti. Ang lahat ay nawawala o naglalaho tulad ng buhay ng tao. Once dead, no turning back na!!. Ngunit may lugar na kung saan naninirahan ang mga taong toumnggap, naniwala at sumonod ayun sa kagustuhan ng kanilang manlilikha. Ayun sa nasusulat " Wala...
Mga Sir/Madame:
Hingi lang po ako nang ideas/reactions/comments at kahit ano pa na masasabi nyo tungkol sa 8 point labor and employment agenda (advantages and disadvantages) nang ating mahal na presidente digong.
Ito po ang ang 8 point labor and employment agenda:
1. Abolition of...