Topic 1.1

Multiple Choice

What type of bonds can water molecules form because of its polarity?

• Covalent

• Ionic

• Hydrogen

• Metallic

Match

Match the following

• Hydrogen

• Oxygen

• Hydrogen to Hydrogen

• Hydrogen to Oxygen

slightly positive

slightly negative

epel

attract

• slightly positive

• slightly negative

• epel

• attract

Match

Match the following

• When water is in a liquid state

• When water is in a solid state

• Water's expansion

... hydrogen bonds are breaking, reforming, and moving around.

... hydrogen bonds are less flexible, causing water to expand.

... causes ice’s density to decrease

• ... hydrogen bonds are breaking, reforming, and moving around.

• ... hydrogen bonds are less flexible, causing water to expand.

• ... causes ice’s density to decrease

Multiple Choice

When positively charged ions like Na+ are in water, ____ is attracted to it.

• hydrogen

• oxygen

Open Ended

When negatively charged ions like Cl- are in water, hydrogen is attracted to it. Explain

Match

Match the following

• Adhesion

• Cohesion

• Water beads up on a leaf because of

• Water sticks to the glass in a graduated cylinder because of

Water molecules stick to molecules other than water

Water molecules stick to other water molecules

Cohesion

Adhesion

• Water molecules stick to molecules other than water

• Water molecules stick to other water molecules

• Cohesion

• Adhesion

Match

Match the following

• high specific heat capacity

• high heat of vaporization

• large water bodies will maintain a relatively stable temperature

•  Sweating is a very effective cooling mechanism

It takes a lot of energy before it will change temperature.

It takes a lot of energy to transform it from the liquid to the gas phase.

high specific heat capacity

high heat of vaporization

• It takes a lot of energy before it will change temperature.

• It takes a lot of energy to transform it from the liquid to the gas phase.

• high specific heat capacity

• high heat of vaporization

Reorder

The liquid environment supports life and __(1)__ , which depend on __(2)__ (solutes) coming into contact.  Water can also act as __(3)__ (donating H+) or __(4)__ (receiving H+) in chemical reactions.

• metabolic processes

• a base

• an acid

• dissolved reactants

1

2

3

4

• 1
• 2
• 3
• 4

Reorder

Water's __(1)__ is responsible for its __(2)__ (a function of its many hydrogen bonds). This means water bodies __(3)__, providing a relatively __(4)__ environment.

• cohesion

• high specific heat capacity

• heat up and cool down only slowly

• stable thermal

1

2

3

4

• 1
• 2
• 3
• 4

Multiple Choice

Sweating and panting causes water to evaporate from it's surface causing ...

• heat from the BODY to transfer to the AIR, COOLING the body.

• heat from the AIR to transfer to the BODY, HEATING the body.

• heat from the BODY to transfer to the AIR, COOLING the body.

• heat from the AIR to transfer to the BODY, COOLING the body.

Reorder

The __(1)__ of ice relative to liquid water means that __(2)__. 

This __(3)__ the underlying water and maintains the aquatic habitat. 

A lot of energy is needed for water to change state, so water has a __(4)__ on climate.

• lower density

• buffering effect

• insulates

• ice floats

1

2

3

4

• 1
• 2
• 3
• 4

Multiple Choice

Define Universal Solvent

• ability to dissolve many substances

• ability to dissolve all substances

• ability to dissolve substances under all conditions

• ability to resist temperature changes

Open Ended

Why is water being colorless important for life?

Poll

How confident is your understanding of this material?

• I know it! Very confident!

• I kinda get it. I am somewhat confident.

• I still have a few questions, or I need to review more.

• HELP! I am so lost!