Anomalous Water Expansion

Froggy Jumps

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About this activity

Water's odd density behavior

Created by

Sashank Sharma

Nepal

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Froggy Jumps Anomalous Water ExpansionOnline version Water's odd density behavior by Sashank Sharma 1 What happens to water when it freezes below 0°C? a Water becomes denser than steel. b Ice sinks below 0°C. c Ice is less dense than liquid water. 2 At what temperature is liquid water at its maximum density? a Approximately 4°C b 0°C c -4°C 3 Why does ice float on water? a Ice is heavier than water at the same temperature. b Ice has a stronger gravity. c Ice is less dense due to water’s hydrogen bonds. 4 What causes water to expand when it freezes? a Water becomes gas b Arrangement of hydrogen bonds creates an open lattice c Water molecules gain mass 5 Which statement about water’s density and temperature is true? a Density decreases as it cools from 4°C to 0°C b Density is constant from 0°C to 4°C c Density increases from 4°C to 0°C 6 How does water’s anomaly affect lakes in winter? a Ice forms on the surface, insulating the water below b Water boils c Lakes instantly freeze solid 7 What is the primary reason water expands on freezing? a Hydrogen bonds create an open hexagonal structure b Increased molecular mass c Changes in chemical composition 8 Which phase change is linked to water’s anomalous expansion? a Solid to gas (sublimation) b Liquid to solid (freezing) c Gas to liquid (condensation) 9 Which property of water allows aquatic life to survive winter? a Ice forms a protective insulating layer b Water sinks to the bottom c Water becomes magnetized 10 What happens to density of water from 0°C up to 4°C? a It increases from 0°C to ~4°C b It decreases steadily c It stays constant at all temperatures

Froggy Jumps

Anomalous Water ExpansionOnline version

Water's odd density behavior

by Sashank Sharma

What happens to water when it freezes below 0°C?

Water becomes denser than steel.

Ice sinks below 0°C.

Ice is less dense than liquid water.

At what temperature is liquid water at its maximum density?

Approximately 4°C

0°C

-4°C

Why does ice float on water?

Ice is heavier than water at the same temperature.

Ice has a stronger gravity.

Ice is less dense due to water’s hydrogen bonds.

What causes water to expand when it freezes?

Water becomes gas

Arrangement of hydrogen bonds creates an open lattice

Water molecules gain mass

Which statement about water’s density and temperature is true?

Density decreases as it cools from 4°C to 0°C

Density is constant from 0°C to 4°C

Density increases from 4°C to 0°C

How does water’s anomaly affect lakes in winter?

Ice forms on the surface, insulating the water below

Water boils

Lakes instantly freeze solid

What is the primary reason water expands on freezing?

Hydrogen bonds create an open hexagonal structure

Increased molecular mass

Changes in chemical composition

Which phase change is linked to water’s anomalous expansion?

Solid to gas (sublimation)

Liquid to solid (freezing)

Gas to liquid (condensation)

Which property of water allows aquatic life to survive winter?

Ice forms a protective insulating layer

Water sinks to the bottom

Water becomes magnetized

What happens to density of water from 0°C up to 4°C?

It increases from 0°C to ~4°C

It decreases steadily

It stays constant at all temperatures

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Anomalous Water Expansion

Froggy Jumps

About this activity

Created by

Download the paper version to play

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Anomalous Water ExpansionOnline version

by Sashank Sharma

What happens to water when it freezes below 0°C?

At what temperature is liquid water at its maximum density?

Why does ice float on water?

What causes water to expand when it freezes?

Which statement about water’s density and temperature is true?

How does water’s anomaly affect lakes in winter?

What is the primary reason water expands on freezing?

Which phase change is linked to water’s anomalous expansion?

Which property of water allows aquatic life to survive winter?

What happens to density of water from 0°C up to 4°C?

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