Biology Brain · A1.1 Water

Cohesion, Adhesion & Surface Tension

Interactive Lab SL

Hydrogen bond formed

Drag the surrounding water molecules toward the center

Whole plant

Magnified xylem

Adhesion! The water molecule sticks to the xylem wall. This attraction is called adhesion.

Cohesion! Water molecules stick to each other. This attraction is called cohesion.

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Water surface

Place strider here

Drag the water strider onto the water

The surface holds! The water strider rests on the water without immediately breaking through.

Magnified surface

Surface tension

Place the strider to unlock the molecular view

Step 1 of 3

Bring water molecules together

Water molecules are attracted to other water molecules. Drag the surrounding water molecules toward the central molecule and observe what happens.

Goal Connect four water molecules to the central water molecule.

MODULE COMPLETE

You explored how hydrogen bonding gives water important biological properties.

XP earned +20 XP

A1.1 Water Module progress

2 / 4

A1.1 MASTERY Water Badge

Complete all A1.1 Water activities to earn the Water Badge.

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