The interactive forces between particles are... A) less effective in solids than in liquids B) more effective in solids than in liquids C) equal to that of a gas D) zero
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more effect in solids than in liquids
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If 2a=3b and a=6 then b=
No one's even answering, so i'll just uh leave this here
Which element forms an ionic bond when combined with Cl
What is best way to get salt out of salt water solution
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(2) a molecular compound
(3) a metal
(4) a nonmetal
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Answer: Option (1) is the correct answer.
Explanation:
An ionic compound is the compound which is composed of oppositely charged ions.
When an ionic compound is in a solid state, then oppositely charged ions are held together by strong electrostatic force of attraction. To break is force of attraction, high energy is required. That is why, ionic compounds do not conduct electricity as a solid.
Whereas in melted state, the ions are less tightly held and as a result they can move easily from one place to another. Also in melted state, ionic compounds act as strong electrolyte. Hence, they are able to conduct electricity.
On the other hand, molecular compounds are poor conductors of electricity and non-metals do not conduct electricity. Whereas a metal is a good conductor of electricity even in its solid state.
Thus, we can conclude that a substance that does not conduct electricity as a solid but does conduct electricity when melted is most likely classified as an ionic compound.
b. graduated cylinder
c. ruler
d. thermometer
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Answer:
A. test tube
Explanation:
edg 2022
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Answer:
The de-exitation of electron to its lower energy level cause the emission spectrum of an element.
Explanation:
The electron is jumped into higher level and back into lower level by absorbing and releasing the energy.
The process is called excitation and de-excitation.
Excitation:
When the energy is provided to the atom the electrons by absorbing the energy jump to the higher energy levels. This process is called excitation. The amount of energy absorbed by the electron is exactly equal to the energy difference of orbits. For example if electron jumped from K to L it must absorbed the energy which is equal the energy difference of these two level. The excited electron thus move back to lower energy level which is K by releasing the energy because electron can not stay longer in higher energy level and comes to ground state.
De-excitation:
When the excited electron fall back to the lower energy levels the energy is released in the form of radiations. This energy is exactly equal to the energy difference between the orbits. These radiations gives the emission spectrum of that element. The characteristics bright colors are due to the these emitted radiations. These emitted radiations can be seen if they are fall in the visible region of spectrum.
Final answer:
The atomic emission spectrum of an element is produced by the energy released when an electron transitions from a higher to a lower energy level. This energy is emitted as light, creating a unique spectrum that can be used to identify the element.
Explanation:
The atomic emission spectrum of an element is caused by the energy released when an electron in an atom moves from a higher energy level to a lower energy level. When an atom absorbs energy, it moves its orbiting electrons to a higher energy level. However, these electrons cannot maintain this high energy state for long, forcing them to transition back to their original or lower energy level. The energy they release during this transition is emitted in the form of light, creating a unique emission spectrum.
For example, hydrogen has a characteristic series of emission lines in its spectrum (Balmer series) because the electrons in a hydrogen atom can occupy specific energy levels. When these electrons drop from a higher energy level to a lower one, they emit light of specific wavelengths, creating the unique atomic emission spectrum of hydrogen.
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Which type of reaction is represented by this equation?
(1) synthesis
(2) decomposition
(3) single replacement
(4) double replacement
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Answer: Option (2) is the correct answer.
Explanation:
An equation in which the the number of reactants equal the number of products is known as a balanced equation.
Whereas a reaction in which a compound dissociates into two or more compounds is known as a decomposition reaction.
Therefore, the given reaction represents that
decomposes into KCl and
.
Hence, it is a decomposition reaction.
Decomposition reaction is the type of reaction that is represented by the given equation. Therefore, the correct option is option 2.
A chemical reaction called a decomposition reaction, often referred to as an analysis or dissociation, occurs when a compound disintegrates into more basic elements. A single compound is transformed into two or more products in this reaction, which may be elements or other compounds.
Decomposition reactions are typically induced by heat, light, electricity, or the presence of a catalyst. These reactions occur because the reactant compound is unstable under certain conditions, leading to its breakdown into more stable products. Therefore, is a decomposition reaction.
Therefore, the correct option is option 2.
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