Explanation:
Robert Millikan performed the oil drop experiment in 1909. By observing charged oil droplets in an electric field, he accurately determined the elementary charge of an electron (e = 1.6 × 10⁻¹⁹ C). This, combined with Thomson's e/m ratio, allowed calculating the electron's mass.
Explanation:
Sodium lauryl sulfate (SLS) is a synthetic detergent (surfactant) used in shampoos and toothpaste. Soap is a natural detergent from fats/oils. Starch and cellulose are natural polymers, not detergents. SLS has a sulfate group and works well in hard water.
Explanation:
Global warming, caused by increased greenhouse gases, leads to melting of polar ice, thermal expansion of oceans, rise in sea level, and changes in weather patterns (climate change). It does not cool the Earth or decrease CO₂.
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