A colorless, odorless gas that is essential for the process of respiration in living organisms and for combustion in various chemical reactions, comprising about one-fifth of the Earth's atmosphere.
A chemical element with the symbol O and atomic number 8, it exists as a diatomic molecule (O₂) under standard conditions and is crucial for life and many industrial applications due to its high reactivity.
A vital substance obtained through methods like distillation of liquid air or electrolysis of water, often stored under pressure for medical use and various chemical applications, including welding and cutting processes.
Example:
酸素が無ければ生きられない。
Describes a taste that is sharp and tangy, often experienced when consuming citrus fruits or fermented products, creating a sensation that can cause a puckering reaction in the mouth.
Pertains to a flavor profile that can evoke feelings of discomfort or aversion, commonly associated with certain foods that may be unpleasant for some individuals.
Indicates a flavor that resembles vinegar or other acetic substances, often identified in traditional Japanese foods like pickled plums (umeboshi) or sour fruits.
Example:
すっぱい木においしい林檎はならない。
A flavor characteristic of a strong, often sharp taste that stimulates the taste buds, typically associated with foods like citrus fruits.
A taste sensation that is often deemed tangy or biting, arising from the presence of acids in certain foods and drinks.
A sensory experience that can evoke a refreshing feeling, usually found in items such as vinegar or fermented products, contributing to a dish's complexity.
Describes a flavor or aroma that combines elements of sweetness and acidity, creating a taste that is both pleasing and tangy.
Expresses a complex emotional state that is pleasurable yet tinged with a sense of sadness or nostalgia, often related to memories of first love or unfulfilled longing.
A substance that has a sour taste and produces hydrogen ions when dissolved in water, resulting in an acidic reaction that can change blue litmus paper to red.
A category of chemical compounds that react with bases to form salts and water, often characterized by their ability to donate protons in chemical reactions.
Example:
その物質はで処理しなければならない。