Differences between acids and bases - NCERT Class 7 Science Acids are a type of substance that includes hydrogen ions and can donate these ions to another substance. Acidic compounds have a sour tang to them. A substance that can accept hydrogen ions from acid is called a base. Caustic soda (NaOH) and caustic potash (KOH) are two examples. Acids vs Bases Acids Meaning of Acid - Acids are a substance that contains hydrogen ions and are capable of donating these hydrogen ions to another substance. Acid Impact on Litmus -Turns blue litmus red. Acid Taste - Sour Acid Ph Value - Less than 7 Acid Chemical Composition - Acids always start with the chemical formula H. For example, HCL. However, organic acids are a notable exceptiont to this. Examples of Acid - Lactic, citric, and tartaric acid etc. Bases Meaning of Bases - Bases are a substance that can accept hydrogen ions from an acid. Bases Impact on Litmus -Turns red litmus blue. Bases Taste - Bitter Bases Ph Value - Less th
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