Answer: False
Explanation:
Metal oxides that dissolve in water, react with water to form basic solutions.
Nonmetal oxides react with water to form acidic solutions.
False. The nature of the solution actually depends on the type of metal oxide. Not all metal oxides will make water acidic when mixed.
The statement that mixing metal oxide with water will result in an acidic solution is generally false.
Actually, the nature of the solution (acidic, basic, or neutral) after mixing metal oxide with water depends on the type of metal oxide. Some metal oxides, particularly those of alkali metals and alkaline earth metals (Group 1 and 2 in the Periodic Table), form basic solutions when dissolved in water. For instance, sodium oxide or magnesium oxide will react with water to form their respective hydroxides, which are basic in nature.
However, certain metal oxides like aluminum oxide or zinc oxide may react with water to form amphoteric solutions (can behave as both acids and bases).
Thus, not all metal oxides will make the water acidic when mixed.
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a. Volcanoes always contribute to flooding, which enriches the soil.
b. Volcanoes aid in the formation of new rocks, which help form fertile soil.
c. Particles released in the air by volcanoes fall to the ground and enrich the soil.
Answer:
The correct statement is option c, that is, particles discharged in the air by volcanoes fall to the ground and enrich the soil.
Explanation:
The eruptions of volcanoes lead to the dispersion of ash over the broader regions surrounding the site of eruption. On the basis of the chemistry of the magma, the ash will be comprising different concentrations of soil nutrients. While the major elements found in the magma are oxygen and silica, the eruptions also lead to the discharging of carbon dioxide, water, hydrogen sulfide, sulfur dioxide, and hydrogen chloride.
In supplementation, the eruptions also discharge bits of rocks like pyroxene, potolivine, amphibole, feldspar that are in turn enriched with magnesium, iron, and potassium. As an outcome, the areas which comprise huge deposits of the volcanic soil are quite fertile.
Answer:
Option (C)
Explanation:
The volcanic eruptions are usually very destructive but it also has some advantages of which, one is that it makes the soil fertile in the nearby region.
During the time of the volcanic eruption, a large number of pyroclastic materials, blocks and ashes that are comprised of various gases are released, which eventually adds to the soil of the nearby areas. These materials ejected from the volcano are rich in various minerals such as oxygen, silicon, and some amount of CO₂, SO₂, and HCl which facilitates the growth of the soil and increases its productivity.
Thus, the soil around a volcanic region is much fertile.
Hence, the correct answer is option (C).
B) Sodium and oxygen
C) carbon and oxygen
D) Carbon and sulfur
Answer:
B) Sodium and oxygen
Explanation:
Ionic bond: This type of bond is formed when there is a complete transfer of electrons from one element to another element. Ionic bond is the bond which is formed between the two oppositely charged ions and are held by the strong electrostatic attraction. This is formed between the atoms which have high differing electronegativities. In this bonding one element is always a metal and another is a non-metal.
Thus,
Out of the options, B involves a metal and a nonmetal which is sodium and oxygen respectively. Thus, they can form a ionic bond on combining.
A) represents 2 metals, C) and D) represents 2 nonmetals and thus, they cannot form an ionic bond.
Answer:
The correct answer is protons.
Explanation:
Hello! Let's solve this!
All atoms of the same element have the same number of protons. The isotopes of an element are chemical species that change the number of neutrons but not that of protons.
Then the different atoms of the same element differ in their protons.
The correct answer is protons.
All atoms of the same element have the same number of protons.
Protons are subatomic particles that are found within the nucleus of an atom. They have a positive electrical charge, which is equal in magnitude but opposite in sign to the negative charge of electrons. Protons are one of the three main types of particles found in atoms, along with neutrons and electrons.
The number of protons in an atom determines its atomic number and defines the element. For example, an atom with one proton is hydrogen (H), while an atom with six protons is carbon (C).
Learn more about protons, here:
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