Characteristics of Water

Insects like daddy longlegs can move on the surface of the water because of

• the higher density of water.

• the special ability of floating.

• the high surface tension of water.

The freezing and melting points of water are the same.

• True

• False

Tags

NGSS.MS-PS1-4

What is the melting point of ice?

• 0 °C

• 100 °C

• 50 °C

• 30 °C

Tags

NGSS.MS-PS1-4

What is the boiling point of water?

• 0 °C

• 100 °C

• 50 °C

• 30 °C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following is not a characteristic of pure water?

• Colourless

• Odourless

• Tasteless

• Acidic

Density of pure water is

• 1 g cm-³

• 10 g cm-³

• 13 g cm-³

What is the chemical formula of water?

• H2O

• CO2

• O2

• H2

Tags

NGSS.MS-PS1-1

Which property of water allows insects to walk on its surface?

• Viscosity

• Surface tension

• Density

• Buoyancy

At what temperature does water boil at sea level?

• 0 °C

• 50 °C

• 100 °C

• 150 °C

What is the pH level of pure water?

• 0

• 7

• 14

• 5