Liquids_Crashcourse

What are the only two elements that are liquid at room temperature?

• Bromine and Gallium

• Water and Mercury

• Gallium and Mercury

• Bromine and Mercury

Tags

NGSS.MS-PS1-4

At what temperature does gallium melt?

• At 100 degrees Celsius

• At 0 degrees Celsius

• Just above room temperature

• At the temperature of the human body

Tags

NGSS.MS-PS1-4

What type of intermolecular force is most common in noble gases?

• Ionic bonding

• Covalent bonding

• London dispersion forces

• Dipole-dipole forces

What causes hydrogen bonding?

• The repulsion between hydrogen atoms

• The interaction between hydrogen and metal atoms

• The attraction between hydrogen and highly electronegative elements

• The attraction between hydrogen and noble gases

What role do intermolecular forces play in the state of matter?

• They are stronger in gases than in liquids

• They determine the chemical properties of a substance

• They are responsible for the phase transitions between solid, liquid, and gas

• They only exist in solid state

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following is not a property of liquids?

• Adapting shape to their container

• Definite volume

• Ability to flow

• High compressibility

Why do liquids form spherical shapes in the absence of external forces?

• Because of gravity

• Due to surface tension

• Due to capillary action

• Because of their viscosity

What is viscosity?

• A liquid's resistance to flow

• A liquid's tendency to evaporate

• A liquid's ability to form hydrogen bonds

• A measure of a liquid's surface tension

What property of liquids allows them to rise in a narrow tube against gravity?

• Cohesion

• Surface tension

• Capillary action

• Viscosity

What does the concave meniscus of water in a glass tube indicate?

• Stronger cohesion than adhesion

• Stronger adhesion than cohesion

• High viscosity

• Low surface tension