Why is water considered polar?

Because of an uneven distribution of charges

Because of its high temperature

Diagram showing the partial charges in a water molecule with oxygen having a partial negative charge and hydrogen having a partial positive charge.

Oxygen has a partial negative charge and hydrogen has a partial positive charge.

Oxygen has a partial positive charge and hydrogen has a partial negative charge.

Both oxygen and hydrogen have partial positive charges.

Both oxygen and hydrogen have partial negative charges.

What are hydrogen bonds?

Weak attractive forces between molecules

Strong covalent bonds between atoms

Ionic bonds between charged particles

What causes a hydrogen bond to form between water molecules?

A positively charged hydrogen atom is attracted to a negatively charged oxygen atom

A negatively charged hydrogen atom is attracted to a positively charged oxygen atom

A positively charged oxygen atom is attracted to a negatively charged hydrogen atom

A negatively charged oxygen atom is attracted to a positively charged hydrogen atom

Why are hydrogen bonds important for water?

They give water its special properties

They make water a good conductor of electricity

They cause water to evaporate quickly

They make water a solid at room temperature

Why does ice float on water?

B) Ice is less dense than liquid water.

A) Ice is denser than liquid water.

D) Ice is heavier than liquid water.

Repulsion between molecules of the same substance

Repulsion between molecules of different substances

What is an example of cohesion?

Drops of water forming beads on smooth surfaces

Water evaporating from a surface

Water boiling at high temperatures

Attraction of molecules of different substances

Attraction of molecules of the same substance

Repulsion of molecules of different substances

Repulsion of molecules of the same substance

What causes the meniscus in a graduated cylinder?

Adhesion between water and glass

What is capillary action?

Water rising in a narrow tube against gravity

Water evaporating from a surface

Water freezing in a narrow tube

What is heat capacity?

The amount of energy needed to raise the temperature

The speed at which an object cools down

Why are chemical reactions important in the water of living things?

They support metabolism, growth, and development

A mixture where components are evenly spread out

A mixture where components are unevenly spread out

What is the role of a solvent in a solution?

It is the substance that causes the dissolving

It is the substance that is dissolved

It is the solid part of the solution

It is the gas part of the solution

What is a suspension?

A mixture of water and undissolved materials

A mixture of water and dissolved materials

A solution with only one component

How does the structure of water contribute to its unique properties?

It gives water a high surface tension and heat capacity.

It allows water to be a good conductor of electricity.

It enables water to dissolve nonpolar substances.

It makes water a poor solvent for ionic compounds.

How does water’s polarity influence its properties as a solvent?

It allows water to dissolve ionic and polar substances.

It makes water a nonpolar solvent.

It prevents water from dissolving any substances.

It causes water to evaporate quickly.

2.1-2.2 Test Review

Authored by Lisa Aston

Biology

9th Grade

NGSS covered

Used 6+ times

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50 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the term for the attraction between molecules of the same substance?

Adhesion

Cohesion

Polarity

Mixture

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which term describes a substance that dissolves another substance?

Solute

Solvent

Suspension

Mixture

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the term for the attraction between molecules of different substances?

Cohesion

Adhesion

Solution

Solute

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the term for a mixture where particles are dispersed throughout but not dissolved?

Solution

Suspension

Solvent

Cohesion

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which term describes the uneven distribution of charges in a molecule?

Polarity

Mixture

Solute

Adhesion

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the term for a substance that is dissolved in a solution?

Solvent

Solute

Suspension

Cohesion

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of bond involves the attraction between a hydrogen atom and an electronegative oxygen atom between adjacent water molecules?

Ionic Bond

Covalent Bond

Hydrogen Bond

Metallic Bond

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2.1-2.2 Test Review

What is the term for the attraction between molecules of the same substance?

Which term describes a substance that dissolves another substance?

What is the term for the attraction between molecules of different substances?

What is the term for a mixture where particles are dispersed throughout but not dissolved?

Which term describes the uneven distribution of charges in a molecule?

What is the term for a substance that is dissolved in a solution?

Which type of bond involves the attraction between a hydrogen atom and an electronegative oxygen atom between adjacent water molecules?

What is water made of?

What is the chemical formula for water?

What kind of charge does oxygen have in a water molecule?

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