Page 16 - E-Science Prep1 2024-2025 t2 Unit1_Neat - Copy

G.R:

1- Acids change the color of blue litmus paper into red.
Its dissolution leads to increase the % of H+ cations
that are responsible the acid properties.

2- Alkalis change the color of red litmus paper into blue.
Its dissolution leads to increase the % of OH- anions
that are responsible the alkali properties.

• Rain resulting from the
dissolution of acidic oxides
in atmospheric water vapor.

• Burning of fossil fuels causes the
evolution of acidic oxides as
nitrogen dioxide NO2 & sulphur dioxide SO2.

• Formation of acid rain due to combination bet. oxides & water in air.
• Accumulation in the clouds leads to precipitation of (acid rain)

It negatively affects the environment as following:

Destruction of forests Harming the aquatic organisms

Corrosion of buildings Respiratory system problems

Reducing acid rain: Conserving the fossil fuel by:

Walking / using bikes / Turning off the unused lights /
Using renewable resources.

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Second Term