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Synthesis: A synthesis reaction is when two or more simple compounds combine to form a more complicated one. These reactions come in the general form of: A + B ---> AB One example of a synthesis reaction is the combination of iron and sulfur to form iron (II) sulfide: 8 Fe + S8 ---> 8 FeSThis is a single-replacement reaction. Example: Zn + Cu(NO3)2 ---> Cu + Zn(NO3)2 One caveat: the question says "new element" ... if this is what you really mean, only nuclear reactions can result in a change in the elements involved.Single displacement
No. Not every double displacement reaction is a precipitation reaction. If we look at just one reaction, a neutralization reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH), we'll see this: HCl + NaOH => NaCl + H2O The end products are sodium chloride (NaCl, or table salt) and water (H2O). The salt is soluble in water so it will not precipitate out. There are many, many double displacement reactions, and the ones that will result in a precipitate will be ones where an end product is not soluble.
Because it is a reaction on the silver surface between silver and hydrogen sulphide (H2S); the result is the silver sulphide (Ag2S), a black compound.
Salts are the result of a neutralization reaction between an acid and a base.
Table salt is the result of an ionic bond. These ionic bonds are formed as a result of a chemical reaction between chlorine and sodium.
Solid precipitate
precipitate
a precipitate
a precipitate
Synthesis: A synthesis reaction is when two or more simple compounds combine to form a more complicated one. These reactions come in the general form of: A + B ---> AB One example of a synthesis reaction is the combination of iron and sulfur to form iron (II) sulfide: 8 Fe + S8 ---> 8 FeSThis is a single-replacement reaction. Example: Zn + Cu(NO3)2 ---> Cu + Zn(NO3)2 One caveat: the question says "new element" ... if this is what you really mean, only nuclear reactions can result in a change in the elements involved.Single displacement
The chemical or chemicals formed in a chemical reaction are called the product of the chemical reaction.
Precipitate.
The name indicates that it is an oxide of iron, which would only result from a chemical reaction between iron and oxygen, forming the compound iron oxide.
The result is a net displacement vector.
Formation of a compound is the result of a chemical reaction.
another displacement
The combination of an acid and a base is called a neutralization reaction. The products will always be a salt and water. Notice that it is a salt, and not just salt. A salt refers to any ionic compound, excluding oxides.