8: Water Properties

What is the shape of a water molecule?

• Outstretched V

• Tetrahedral

• Square Planar

• Linear

Why does oxygen in a water molecule have a slightly negative charge?

• Because it has fewer neutrons

• Because it attracts electrons more strongly

• Because it is larger than hydrogen

• Because it has more protons

What type of bond forms between water molecules?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Metallic bond

What property of water helps it move up tall trees?

• Surface tension

• Adhesion

• Viscosity

• Density

Tags

NGSS.MS-ESS2-4

What is the term for water molecules sticking to each other?

• Diffusion

• Fusion

• Cohesion

• Adhesion

Why can some insects walk on water?

• Because of water's low density

• Because of water's high viscosity

• Because of water's surface tension

• Because of water's polarity

Why is water considered a powerful solvent?

• Because it is a liquid at room temperature

• Because it can dissolve many polar molecules and ionic compounds

• Because it has a high boiling point

• Because it is non-polar

What happens to water when it freezes?

• It contracts and becomes denser

• It expands and becomes less dense

• It evaporates

• It remains the same density

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is specific heat?

• The amount of heat needed to change the temperature of 1 g of a substance by 1°C

• The amount of heat needed to melt 1 g of a substance

• The amount of heat needed to evaporate 1 g of a substance

• The amount of heat needed to freeze 1 g of a substance

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How does evaporation help animals cool down?

• By increasing their body temperature

• By removing heat from their skin

• By reducing their metabolic rate

• By increasing their hydration levels