Prediction Of Products

Question 1

Single Displacement

Answer 1

When one metal displaces another metal in a compound, or when a non metal displaces non metal in a compound. Element + Compound > element + compound
A+ BX > AX + B
X+ BY > BX + Y

Question 2

What are examples of Single Displacement?

Answer 2

Active Metal will displace metallic Ion in a compound of a less active metal.
Active Metal Reacting with water To give A metallic hydroxide and hydrogen gas
Active Metals displace in Acids
Halogens will displace in less active halogens.

Question 3

Double Displacement

Answer 3

The positive and negative ions of two compounds are interchanged
Compound + Compound > Compound + Compound
AX + BY > AY + BX

Question 4

What are types of Double Displacement Reactions?

Answer 4

Neutralization reaction:
Acid + Base > Salt and Water
Salt and Acid:
Salt + Acid > Salt of Acid and New Volatile Acid
Salt + Acid or Base > decomposable compound
Some soluble salts combine to form an insoluble salt and a soluble salt

Question 5

Decomposition

Answer 5

When energy Is supplied, compounds can decompose to form similar compounds and or elements
AX > A + X

Question 6

What are types of Decomposition?

Answer 6

If acids are heated > water + acidic oxide
Metallic hydroxide is heated > metallic oxide and water
Metallic carbonate when heated > metallic oxide and co2
Metallic Chlorate > Metallic Chloride and Oxygen
Most Metallic Oxides are stable but few decompose with heat
Some Compounds decompose by electricity into their elements

Question 7

Synthesis

Answer 7

Two simple substances combine to form a complex substance
Element + Element > compound
Compound …
A + X > AX

Question 8

What are examples of Synthesis?

Answer 8

Combination of Elements
Combination of An Acid Anhydride with Water to get an Acid
Combination of a Basic Anhydride with water to get a base
Combination of a Metal of a Basic Oxide with a nonmetal of an acidic Oxide to get a salt