Unit 2

What type of bond holds water molecules together in a drop of water?

• Ionic bond

• Covalent bond

• Hydrogen bond

• 
  Polar bond

Which of the following is responsible for water's surface tension?

• Cohesion

• Adhesion

• Hydrophilic forces

• Capillary action

What property allows water to move up thin tubes, such as in plant stems?

• Surface tension

• Capillary action

• Density

• Hydrophobic interaction

Tags

NGSS.HS-ESS2-5

What is the term for a molecule that does not mix well with water?

• Hydrophobic

• Hydrophilic

• Polar

• Ionic

Water molecules are polar because..

• They share electrons equally between oxygen and hydrogen.

• Oxygen has a stronger attraction for electrons than hydrogen.

• Oxygen and hydrogen have the same electronegativity.

• Water molecules are hydrophobic.

Tags

NGSS.MS-PS1-1

What type of bond involves the sharing of electrons between two atoms?

• Ionic bonding

• Covalent bonding

• Hydrogen bonding

• Hydrophobic interaction

Tags

NGSS.MS-PS1-1

What property of water allows it to stick to other substances?

• Cohesion

• Adhesion

• Surface tension

• Heat capacity

Which of the following describes a hydrophilic substance?

• It repels water

• It mixes or dissolves in water

• It forms strong covalent bonds with water

• It is nonpolar and insoluble in water

What type of bond forms when electrons are transferred from one atom to another?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Polar bond

What property of water is most important for forming a meniscus in a graduated cylinder?

• Surface tension

• Cohesion

• Adhesion

• Capillary action