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What happens when you combine an active metal and a halogen?

When an active metal (such as sodium or potassium) is combined with a halogen (such as chlorine or fluorine), they undergo a redox reaction to form an ionic compound known as a metal halide. This reaction is often highly exothermic and can be violent if not controlled properly due to the high reactivity of both the metal and the halogen.


In a single replacement reaction which element must be most active?

In a single replacement reaction, the element that is most active is the one that is higher up on the reactivity series than the element it is trying to replace. The more active element will displace the less active element in the reaction.


What are the three disadvantages of synergy according to Morans research?

Drugs are combined in synergy but the the pure drug is expensive .Same degree of activity as the extract & dose of active compound.


List and define replacement in chemistry?

There are two types of replacements in Chemistry. There are single and double replacements. A single replacement is when an element replaces another element within a compound, but in order for this reaction to occur the elemet that is being replaced must be less active than the element that is being replaced. This can be determined using an activity series. A double replacement is when two compounds switch their elements: NaF + AuCl --> NaCl + AuF. (This reaction may not actually occur, it is just a demonstration of how the elements replace eachother). Finally, within these reactions if pure water (H2O) is formed the reaction is classified as a neutralization and a no reaction. !


What happens when single replacement reactions is taking place?

a single replacement reaction is a reaction in which one element takes the place of another element in a compound.In a single replacement reaction, or single displacement reaction, a single uncombined element replaces another in a compound. Two reactants yield two products. For example when zinc combines with hydrochloric acid, the zinc replaces hydrogen.Replacement ReactionsA+BC=B+ACFor instance, if magnesium is dropped into a solution of Copper (II) Nitrate, the magnesium will react because it is more active (in other words wants to bond more than the copper does).If by chance you drop Copper into Potassium Acetate, you will find that no reaction will occur.Reactivity of Metals (from most reactive to least)LithiumBariumPotassiumCalciumSodiumMagnesiumAluminumZincChromiumIronNickelTinLeadHydrogenCopperMercurySilverPlatinumGold1. Alkali metals will always replace hydrogen in cold water2. Magnesium to iron on the chart will always replace hydrogen in steam3. Mercury doesn't react with much of anything4. Metals higher than Hydrogen will always replace it in an acid (Nitric acid, drop zinc (II) in it, and you will recieve H2 + ZnCl2)


What is the single replacement reaction of cadmium and zinc when cadmium is in the form CdSO4?

The single replacement reaction between cadmium and zinc when cadmium is in the form CdSO4 is: CdSO4 + Zn → ZnSO4 + Cd Here, zinc displaces cadmium from the compound cadmium sulfate, forming zinc sulfate and cadmium as a product.


What must an element be in order to replace another element in a compound?

An element must have similar chemical properties and valency as the element it is replacing in order to replace it in a compound. This ensures that the chemical reaction remains balanced and the new compound formed is stable.


Is the active compound in ammonia acetic acid?

No. Acetic acid is the active compound in vinegar. Ammonia is its own compound, though it is diluted in water for household use.


What is asymmetrical symmetry?

The synthesis of an optically active compound from an optically inactive compound with or without using an optically active reagent.


What change is it when Some white powder from your kitchen fizzes when you put it into vinegar?

This is a description of the reaction between the acetic acid, which is the "active ingredient" in vinegar, and baking soda, which is sodium bicarbonate. This double replacement reaction is covered in another question on WikiAnswers.


Does Windows Vista have active desktop?

NO. For a replacement for active desktop on 32bit Vista go here. http://www.howtogeek.com/howto/windows-vista/bounty-program-success-active-desktop-replacement-for-vista/


In a chemical reaction a reactant binds to an enzyme at a region known as the?

active site. This is where the reaction takes place and the substrate interacts with the enzyme to form the product. The active site has a specific shape that fits the substrate, allowing for the reaction to occur.