25 Questions
What is the law of reflection?
The angle of incidence equals the angle of reflection
In which field is reflection used to study seismic waves?
Geology
What type of reflection is mirror-like?
Specular reflection
Which waves can be reflected at shallow angles with special 'grazing' mirrors?
Hard X-rays and gamma rays
In which field is reflection important for radio transmission and radar?
Electromagnetic waves
What is the etymology of the word 'alkali'?
The word 'alkali' is derived from Arabic al qalīy (or alkali), meaning the calcined ashes, referring to the original source of alkaline substances.
How is an alkali defined in chemistry?
An alkali is a basic, ionic salt of an alkali metal or an alkaline earth metal. It can also be defined as a base that dissolves in water.
What is the pH range of a solution of a soluble base?
A solution of a soluble base has a pH greater than 7.0.
Why is the term 'alkaline' commonly used in English?
The term 'alkaline' is commonly used in English as a synonym for basic, especially for bases soluble in water, likely because alkalis were the first bases known to obey the Arrhenius definition of a base and are still among the most common bases.
What is potash composed mostly of?
Potash is composed mostly of potassium carbonate, and it was derived from a water-extract of burned plant ashes.
What is the etymology of the word 'alkali'?
The word 'alkali' is derived from Arabic al qalīy (or alkali), meaning the calcined ashes (see calcination), referring to the original source of alkaline substances.
Why is the term 'alkaline' commonly used in English?
The adjective alkaline, and less often, alkalescent, is commonly used in English as a synonym for basic, especially for bases soluble in water.
What is the pH range of a solution of a soluble base?
A solution of a soluble base has a pH greater than 7.0.
What is potash composed mostly of?
A water-extract of burned plant ashes, called potash, is composed mostly of potassium carbonate.
How can an alkali be defined in chemistry?
An alkali is a basic, ionic salt of an alkali metal or an alkaline earth metal. It can also be defined as a base that dissolves in water.
What are the two main types of chemical bonds mentioned in the text?
Ionic bonds and covalent bonds
What are examples of 'weak bonds' or 'secondary bonds' mentioned in the text?
Dipole–dipole interactions, the London dispersion force, and hydrogen bonding
How do electrons contribute to the formation of chemical bonds?
Electrons shared between two nuclei are attracted to both of them, stabilizing the paired nuclei
What stabilizes the paired nuclei in the context of chemical bonding?
Constructive quantum mechanical wavefunction interference
What is the term used for the optimal distance between bonded nuclei?
Bond distance
What are the two main types of chemical bonds mentioned in the text?
Ionic bonds and covalent bonds
What are the examples of 'strong bonds' or 'primary bonds' mentioned in the text?
Covalent, ionic, and metallic bonds
What are the examples of 'weak bonds' or 'secondary bonds' mentioned in the text?
Dipole–dipole interactions, the London dispersion force, and hydrogen bonding
What stabilizes the paired nuclei in the context of chemical bonding?
Constructive quantum mechanical wavefunction interference
What maintains an optimal distance between bonded nuclei?
Balancing attractive forces and repulsive forces
Test your knowledge of reflection with this quiz! Explore the principles of reflection, including the law of reflection, and learn about common examples involving light, sound, and water waves.
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