Water - Brainpop 5/29

Front

What is the chemical formula for a molecule of water?

Back

H2O

Tags

NGSS.MS-PS1-1

Front

What does it mean for water to be a 'universal solvent'?

Back

It means that water can dissolve many different substances.

Front

What is 'hard water' and how can it be identified?

Back

Hard water contains high levels of minerals, and it can be identified by mineral deposits on pots and pans.

Front

What is the freezing point of pure water?

Back

0 degrees Celsius (32 degrees Fahrenheit).

Front

How does the presence of salt affect the freezing point of water?

Back

Salt lowers the freezing point of water, making salty ocean water freeze at a lower temperature than pure water.

Front

What is the significance of water molecules having a slight positive and negative charge?

Back

This polarity allows water molecules to form hydrogen bonds, which is essential for many of its unique properties.

Tags

NGSS.HS-ESS2-5

Front

What is cohesion in relation to water?

Back

Cohesion is the attraction between water molecules, which causes them to stick together.

Front

What is adhesion in relation to water?

Back

Adhesion is the attraction between water molecules and other substances, allowing water to climb up surfaces.

Front

What is surface tension and how is it related to water?

Back

Surface tension is the cohesive force at the surface of water that allows it to resist external force, enabling small objects to float.

Front

What role does water play in temperature regulation for living organisms?

Back

Water has a high specific heat capacity, which helps stabilize temperatures in organisms and environments.