B. reduction
C. substitution
D. condensation
Answer: Option (B) is the correct answer.
Explanation:
When an atom gains electrons then it becomes rich in electrons and therefore it acquires a negative charge.
Also, it is known that a reduction reaction is a reaction in which an element gain electron(s).
For example, is a reduction reaction.
Thus, we can conclude that when nonmetal atoms become negative nonmetal ions then type of reaction which occurs is reduction reaction.
b. no ability to produce rain.
c. particles made of ice crystals.
d. its base at or near the ground
Answer: d. Its base at or near the ground.
Explanation:
Fog is a visible weather condition in which the tiny droplets of water present in the atmosphere come together and which forms a thick cloud which lies close to the surface of the ground (land) or above the sea surface. Fog cuts the visibility down to one kilometers, it makes it difficult to observe the things through it. The fog is influenced by several factors such as wind conditions, nearby water bodies, and topography.
Fog is a cloud that has its base at or near the ground. The answer is letter D. Fog results when atmospheric water vapor condenses to the extent that the new forms, water droplets or ice crystals, become visible. Saturation of the air and sufficient condensation nuclei are ordinarily prerequisites for the formation of fog. One of the great hazards associated with fog is a lack of visibility.
All substitutions must be limited to the same element.
An atom must be identical in size.
An atom must be similar in size.
The substituting atom must be from the same period.
The substituting atom must be from the same group.
Ans: C) and E)
A solid solution is essentially a multicomponent system which is composed of a mixture of two or more elements sharing the same crystal lattice. Alloys are solid solutions.
The requirement for one type of atom to substitute for another in a solid solution are two fold
1) The atom must be similar in size
2) The substituting atom must be from the same group.
B. Ionic solids have higher melting points than molecular solids.
C. Molecular solids have higher melting points than all other types of solids.
D. It is impossible for solids to melt; therefore solids do not have melting points.
b. decomposition
c. single replacement
d. double replacement.
A chemical reaction is defined as the process in which two more reactants are converted to form one or more different product.
The chemical reaction in which two more reactants combine to form one product is a synthesis reaction.
Synthesis reactions are defined as the reaction in which two different atoms or molecules react to form a different compound. Synthesis reactions are exothermic reactions, such that the reactions release energy in the form of heat and light.
One of the most common examples of a synthesis reaction is the formation of sodium chloride. It can be expressed as:
Na (Sodium) + Cl (Chlorine) NaCl (Sodium Chloride)
Thus, the synthesis reaction will result in one different compound or product.
The correct answer is Option A.
To know more about synthesis reaction, refer to the following link: