The characteristic of a substance that demonstrates the properties of an acid, often indicated by a sour taste and a pH level below 7, which can also change blue litmus paper to red.
A term used to describe the nature of soils or materials that contain high concentrations of acidic compounds, which may negatively affect plant growth and soil health.
A classification of foods, such as meats and fish, which, when metabolized, produce acidic byproducts in the body, contrasting with alkaline foods.
A specific type of chemical reaction that signifies the presence of acids, exemplified by the transformation of litmus paper indicating acidity levels.
Example:
パイナップルやレモンのような酸性の果実はすっぱい。
Precipitation with a pH value of 5.6 or lower, significantly more acidic than normal rain, primarily caused by the emissions of sulfur and nitrogen oxides from the burning of fossil fuels, leading to environmental damage such as soil degradation and harm to ecosystems.
Rain that contains dissolved compounds from atmospheric pollutants, such as sulfur and nitrogen oxides, resulting in a high level of acidity that can adversely affect flora, fauna, and man-made structures.
A type of rainfall characterized by its elevated acidity, commonly attributed to human activities, which poses serious threats to natural habitats, water quality, and infrastructure.
Example:
カナダ人が言うところでは、魚は酸性雨として知られているもののために、死にかけているとのことです。
A type of soil characterized by a pH level of 6.5 or lower, which typically results from the accumulation of organic matter that releases acids, often found in humid climates where alkaline substances may be leached away or depleted.
Soil that exhibits acidic properties, making it challenging for certain crops to thrive due to high concentrations of acidic components and a deficiency in alkalinity, impacting the soil's nutritional balance.
A level of acidity that is lower than neutral, having mild sourness without being overpowering.
A condition that often describes solutions or substances with a pH value slightly below 7, indicating a gentle acidic character.
A property of certain liquids that exhibit weak acidic behavior, commonly found in natural substances and some skincare products.