Distinguishing tastes such as sweet and sour tastes.

here's a summary of the information provided in the image about tastes of substances, acids, and bases:

Tastes of Substances

• Human tongues can taste four different tastes: salty, sweet, sour, and bitter.
• Tastes like sweet and sour are distinguishable.
• Household substances can be classified as acids, bases, and neutrals based on their properties.
• Substances such as lemon and other fruit juices, vinegar, tartaric acid, and swimming pool acid have acid properties.
• Acids have a sour taste, feel rough on the skin, and are corrosive.
• An acid is a substance with a sour taste and turns blue litmus red.
• Substances such as bicarbonate of soda, washing powder, most soaps, bleach, and household cleaners have base properties.
• Bases taste bitter, feel slippery on the skin, and are corrosive.
• A base is a substance with a bitter taste and turns red litmus blue.
• Pure water and salt are considered neutrals (not acidic or basic).

Acids properties

1. Sour taste
2. Turn blue litmus red
3. pH ranges from 0 to less than 7 (7 is neutral)
4. Rough feel
5. Sticky
6. Sharp smell

Base properties

1. Bitter taste
2. Turn red litmus blue
3. pH ranges from above 7 to 14
4. Slippery feel
5. Usually no smell