_Properties of Water

Multiple Choice

Find an element with similar chemical properties to Barium (Ba).

• Ca an Ra, because they are in the same group and have similar chemical properties.

• Cs and La, b/c they are in the same period number.

• Ca and Y, b/c they are 90 degree angle and have similiar properties.

• No elements are similar

Open Ended

Describe how a covalent bond forms, using the diagram provided.

Multiple Choice

Which end of the water molecule has a slightly positive charge?

• the oxygen end
• the hydrogen end
• both ends are slightly positive
• neither end is positive

Multiple Choice

Which statement best describes a dipole moment?

• All electrons are equally shared.

• When a molecule has an area of positive charge and an area of negative charge.

• When a molecule has more electrons than protons.

• When an ionic compound dissolves in water.

Draw

Use dashed lines to show at least two hydrogen bonds between these molecules

Multiple Choice

Which numbered arrow in the image above points to a hydrogen bond?

• 1

• 2

• 3

• 4

Multiple Choice

What is the temperature of the water just below the ice in a frozen pond during winter?

• 0°C

• -10°C

• 4°C

• -4°C

Multiple Choice

Which of the following best explains why ice floats on water?

• Ice is denser than liquid water.

• Ice has a crystalline structure that is less dense than liquid water.

• Ice contains more air bubbles than liquid water.

• Ice has stronger hydrogen bonds than liquid water.

Open Ended

What would Earth be like if water were MORE DENSE as a solid?

Multiple Choice

Analyze how the density anomaly of water is crucial for aquatic life in cold environments.

• It allows ice to sink, providing insulation for aquatic life below.

• It allows ice to float, creating a barrier that insulates the water below.

• It causes water to freeze from the bottom up, protecting aquatic life.

• It prevents water from freezing, maintaining a constant environment.

Open Ended

What life could exist in a world with only solid water?

Multiple Choice

Un científico tiene la hipótesis de que una gran erupción volcánica causó un cambio en la temperatura global. ¿Qué información obtenida de los núcleos de hielo es MÁS útil para apoyar la hipótesis del científico?

• niveles de oxígeno disuelto

• identidades de metales traza

• estimaciones de radiactividad natural

• cantidades de polvo atmosférico

Multiple Choice

Ms Bogan has a hypothesis that a large volcanic eruption caused a change in global temperature. Which information gained from ice cores is MOST useful in supporting the scientist's hypothesis?

• levels of dissolved oxygen
• identities of trace metals
• estimates of natural radioactivity
• amounts of atmospheric dust

Multiple Choice

A scientist has a hypothesis that a large volcanic eruption caused a change in global temperature. Which information gained from ice cores is MOST useful in supporting the scientist's hypothesis?

• levels of dissolved oxygen
• identities of trace metals
• estimates of natural radioactivity
• amounts of atmospheric dust

Multiple Choice

The early atmosphere contained a lot more water vapour than the modern atmosphere. Where did it go?

• It escaped into space

• It condensed to form the oceans

• It was absorbed by plants

• It was broken down to form oxygen

Multiple Choice

What are the main differences in molecular structure between liquid water and ice?

• Liquid water has a more compact structure than ice

• Ice has a more ordered structure than liquid water

• Liquid water molecules are more spaced out than ice

• Ice is denser than liquid water

Multiple Choice

What can be concluded by comparing the lengths of the melting and boiling lines?

• It takes more energy to vaporize the sample than it does to melt it.

• It takes more energy to increase the temperature of the gas than the liquid.

• The substance stays at the boiling point for a short time.

• The substance prefers the gas phase over the other phases.

Open Ended

How does water’s high specific heat make it an ideal chemical to use a biological fluid?

Multiple Choice

When a solid compound dissolves in water, …

• each of its particles are surrounded by water molecules.

• its particles surround individual water molecules.

Multiple Choice

What is the process called when lipids become mixed with water?

• Dissolution

• Emulsification

• Suspension

• Separation

Multiple Choice

What is the average salinity of seawater?

• 1.5 percent

• 2.5 percent

• 3.5 percent

• 4.5 percent

Multiple Choice

What factors can affect water clarity in an aquatic ecosystem?

• Suspended particles

• Water temperature

• pH levels

• Dissolved oxygen

Multiple Choice

What are the general metrics used to assess water clarity?

• Secchi depth (Zsd)

• Chlorophyll-a concentration (Chl-a)

• Total suspended solids (TSS)

• Light attenuation (Kd)

Multiple Choice

What is the maximum vertical visibility when diving?

• 30M

• 50M

• 80M

• 100M

Multiple Choice

Abigail and Ethan are on a science adventure by the river! They want to find out how healthy the river is. What fun method can they use to analyze the river's health?

• by measuring its depth

• by measuring the speed at which the river flows

• by measuring its dissolved oxygen

• by measuring the distance the river travels to reach an ocean

Multiple Choice

What is one way scientists analyze the health of a river?

• by measuring its depth
• by measuring the speed at which the river flows
• by measuring its dissolved oxygen
• by measuring the distance the river travels to reach an ocean

Multiple Choice

What happens to the solution if there are more hydronium ions than hydroxide ions?

• The solution is basic

• The solution is neutral

• The solution is acidic

• The solution is alkaline

Multiple Choice

What type of bond is represented by the blue and red circles in the image?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Metallic bond

Open Ended

How does water's role as the universal solvent make it function well as a body fluid?

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident