Understanding Cohesive and Adhesive Forces

Understanding Cohesive and Adhesive Forces

Assessment

Interactive Video

Created by

Emma Peterson

Chemistry, Science

9th - 12th Grade

1 plays

Medium

10:54

This video explains the difference between cohesive and adhesive forces, using water as an example. It covers the concept of electronegativity and how it affects molecular bonds, particularly hydrogen bonds. The video also discusses how these forces influence the behavior of water on different surfaces, such as glass and wax, leading to phenomena like surface tension and capillary action. The formation of meniscus in test tubes with water and mercury is also explained.

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10 questions

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1.

MULTIPLE CHOICE

30 sec • 1 pt

What type of force exists between two molecules of the same type?

2.

MULTIPLE CHOICE

30 sec • 1 pt

Which element is more electronegative, leading to partial charges in water molecules?

3.

MULTIPLE CHOICE

30 sec • 1 pt

What type of bond is a hydrogen bond considered?

4.

MULTIPLE CHOICE

30 sec • 1 pt

What happens to water on a glass surface due to adhesive forces?

5.

MULTIPLE CHOICE

30 sec • 1 pt

Why does water form droplets on a waxy surface?

6.

MULTIPLE CHOICE

30 sec • 1 pt

What is the term for the inward force experienced by water molecules at the surface?

7.

MULTIPLE CHOICE

30 sec • 1 pt

Why does water have a concave meniscus in a glass test tube?

8.

MULTIPLE CHOICE

30 sec • 1 pt

What causes mercury to have a convex meniscus in a glass container?

9.

MULTIPLE CHOICE

30 sec • 1 pt

What is the phenomenon called when water rises in a narrow tube?

10.

MULTIPLE CHOICE

30 sec • 1 pt

What combination of forces allows water to travel up a narrow tube?

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