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Cohesion and Adhesion

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

​ (a)   is water droplets sticking to each other.​ (b)   is water droplets sticking to other surfaces.

Choose from the below words

cohesion

adhesion

2.

Attraction between water molecules is known as (a)   .

Choose from the below words

Buffer

Adhesion

Hydrogen Bond

Cohesion

3.

Describe COHESION.

a)

Water molecules attracted to other substances.

b)

Water molecules climbing upwards against the force of gravity.

c)

Water molecules dissolving many substances because of its polarity.

d)

Water molecules attracted to other water molecules.

4.

Water's ability to stick to glass is

a)

adhesion

b)

cohesion

c)

surface tention

d)

capillary action

5.

What is adhesion?

a)

Water's ability to stick to itself

b)

Water's ability to stick to other substances

c)

The strength of the cohesion of all the water molecules combined

d)

Tape, glue and other adhesives

6.

Water sticks well to many materials. What term relates to this property of water?

a)

cohesion

b)

adhesion

c)

density

d)

surface tension

7.

Water sticking to the paper clips is called -

a)

adhesion

b)

cohesion

c)

surface tension

d)

polarity

8.

Which of the following best describes cohesion?

a)

The attraction between molecules of the same substance

b)

The attraction between molecules of different substances

c)

The ability of a liquid to flow in narrow spaces

d)

The resistance of a liquid to an external force

9.

What is the primary cause of water's cohesive properties?

a)

Ionic bonds

b)

Hydrogen bonds

c)

Covalent bonds

d)

Van der Waals forces

10.

In an experiment, water is observed climbing up a thin tube. What is this phenomenon called?

a)

Cohesion

b)

Adhesion

c)

Capillary action

d)

Surface tension

11.

Which of the following scenarios is an example of adhesion?

a)

Water droplets forming on a leaf

b)

Water forming a dome on a penny

c)

Water climbing up a paper towel

d)

Water molecules attracting each other

12.

How does cohesion contribute to the surface tension of water?

a)

By allowing water to stick to other surfaces

b)

By causing water molecules to repel each other

c)

By creating a strong bond between water molecules

d)

By reducing the density of water

13.

Which experiment would best demonstrate adhesion?

a)

Dropping water on a waxed surface

b)

Observing water droplets on a spider web

c)

Pouring water into a graduated cylinder

d)

Mixing oil and water

14.

What role does adhesion play in the process of transpiration in plants?

a)

It helps water molecules stick to each other

b)

It allows water to move through the plant's xylem

c)

It prevents water loss from the leaves

d)

It increases the rate of photosynthesis

15.

Why do water droplets form on the outside of a cold glass?

a)

Due to cohesion between water molecules

b)

Due to adhesion between water molecules and the glass surface

c)

Due to the condensation of water vapor

d)

Due to the evaporation of water