Question

1. list three properties of acids, and give an example. (p. 2,3, 8)

Explanation:

To answer this, we recall properties of acids from Chemistry (Natural Science subfield). Acids have properties like sour taste (e.g., citric acid in lemons), react with metals (e.g., HCl + Zn → ZnCl₂ + H₂), and turn blue litmus red. An example is hydrochloric acid (HCl) or sulfuric acid (H₂SO₄). Three key properties: 1) Sour taste (e.g., vinegar has acetic acid, tastes sour). 2) React with active metals to produce hydrogen gas (e.g., H₂SO₄ + Mg → MgSO₄ + H₂). 3) Turn blue litmus paper red (e.g., HCl solution turns blue litmus red).

Answer:

Three properties of acids and an example:

1. Acids have a sour taste (e.g., acetic acid in vinegar).
2. Acids react with active metals (like Zn, Mg) to produce hydrogen gas (e.g., $\boldsymbol{2HCl + Zn

ightarrow ZnCl_2 + H_2}$).

1. Acids turn blue litmus paper red (e.g., hydrochloric acid solution turns blue litmus red).

Example acid: Hydrochloric acid (HCl) or Sulfuric acid (H₂SO₄).