Water absorption is when a material takes in water. Some materials, like paper towels and sponges, are really good at absorbing water. This is because they have tiny spaces that trap the water. Other materials, like plastic or metal, don't absorb water because they don't have these spaces. Understanding water absorption helps us choose the right materials for different jobs, like using cotton towels to dry ourselves after a shower!
Let's dive into some activities to explore this concept further!
Match the term with its definition:
| Term | Definition |
|---|---|
| 1. Absorption | A. The ability of a material to allow liquids to pass through. |
| 2. Impermeable | B. The process of a substance taking in another substance. |
| 3. Permeable | C. A material that does not allow liquids or gases to pass through it. |
| 4. Hydrophilic | D. Having an affinity for water; tending to dissolve in, mix with, or be wetted by water. |
| 5. Hydrophobic | E. Tending to repel or fail to mix with water. |
(Answers: 1-B, 2-C, 3-A, 4-D, 5-E)
Complete the following paragraph using the words: absorbent, water, spaces, material, hydrophobic.
An __________ __________ has the ability to soak up __________ due to its structure. The __________ has many tiny __________ that trap the liquid. A __________ substance repels water.
(Answers: absorbent, material, water, material, spaces, hydrophobic)
Why is it important to use __________ materials for cleaning up spills?
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