Palm Oil (7)

Science

Question

Palm Oil (7)

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I easily remember

Part of soap which can dissolve in water

The ‘head’ or ‘hydrophilic’ part

Part of soap which cannot dissolve in water

The ‘tail’ or ‘hydrophobic’ part

Cleansing action of soap (1)

- When soap dissolves in water, the surface tension of the water is reduced - Therefore, the surface of cloth becomes completely wet with soap water

Cleansing action of soap (2)

The hydrophobic part of the soap molecules will dissolve and attach to the greasy dirt on the cloth surface while the hydrophilic part will dissolve in water

Cleansing action of soap (3)

Scrubbing and brushing the cloth will dislodge the greasy dirt from the cloth surface to form greasy droplets that are surrounded by soap molecules and suspended in soapy water

Cleansing action of soap (4)

Soap bubbles produced by soapy water trap greasy droplets in the soapy water

Cleansing action of soap (5)

- When the soapy water and bubbles are removed during rinsing, the greasy dirt will also be removed as well - In this way, soap removes greasy dirt and cleans the cloth

Scope of sustainable management in the palm oil industry (1)

Land use

Scope of sustainable management in the palm oil industry (2)

Wastewater

Scope of sustainable management in the palm oil industry (3)

Air quality

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Palm Oil (7)

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