Cohesion and Adhesion
Flashcard
•
Science
•
6th - 8th Grade
•
Hard
Barbara White
FREE Resource
Student preview
9 questions
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1.
FLASHCARD QUESTION
Front
Hydrology Noun
[hy-drol-uh-jee]
Back
Hydrology
The scientific study of the properties, distribution, and effects of water on the Earth's surface, in the soil, and atmosphere.
Example: This diagram shows how hydrologists measure a river's width, depth, and velocity, which are key factors in studying the movement of water.
2.
FLASHCARD QUESTION
Front
Polarity Noun
[poh-lar-i-tee]
Back
Polarity
The property of a molecule having an uneven distribution of electrical charge, resulting in partially positive and negative ends.
Example: This diagram shows a water molecule (H2O) has an uneven electrical charge. The oxygen end is slightly negative (δ-) and the hydrogen ends are slightly positive (δ+).
3.
FLASHCARD QUESTION
Front
Universal Solvent Noun
[yoo-ni-vur-suhl sol-vuhnt]
Back
Universal Solvent
A substance, particularly water, that has the ability to dissolve a very wide range of other substances.
Example: This diagram shows how polar water molecules surround and separate the positive (cation) and negative (anion) parts of a substance, causing it to dissolve.
4.
FLASHCARD QUESTION
Front
Cohesion Noun
[koh-hee-zhuhn]
Back
Cohesion
The intermolecular force of attraction between molecules of the same substance, causing them to stick together tightly.
Example: This diagram shows water molecules sticking to each other through hydrogen bonds, which is the force responsible for cohesion.
5.
FLASHCARD QUESTION
Front
Adhesion Noun
[ad-hee-zhuhn]
Back
Adhesion
The force of attraction between molecules of different substances, causing them to stick to various surfaces.
Example: This diagram shows water climbing up a narrow glass tube because the water molecules are more attracted to the glass (adhesion) than to each other.
6.
FLASHCARD QUESTION
Front
Surface Tension Noun
[sur-fis ten-shuhn]
Back
Surface Tension
The property of a liquid's surface that makes it difficult to stretch or break due to strong cohesive forces.
Example: This diagram shows that liquid molecules inside are pulled in all directions by cohesion, while surface molecules are pulled only inwards, creating a tight 'skin' called surface tension.
7.
FLASHCARD QUESTION
Front
Capillary Action Noun
[kap-uh-ler-ee ak-shuhn]
Back
Capillary Action
The ability of a liquid to flow in narrow spaces without assistance, often in opposition to external forces like gravity.
Example: This diagram shows capillary action, where water is pulled up a narrow tube because the attraction between water and the tube (adhesion) is strong.
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