Properties of Water and Interactions

Ms. Clark's chemistry class conducts a lab on water properties, exploring concepts like density, surface tension, and capillary action through various experiments. Students predict outcomes, observe results, and discuss the unique properties of water, such as why oil and water don't mix and how surface tension allows a paperclip to float. The lab aims to make chemistry engaging and accessible for at-home learning.

Which property of water allows it to have a high boiling point?

• Polar bonds

• Low density of a solid

• Capillary action

• Hydrogen bonds

What was the predicted number of water drops that could fit on a dime?

• 13 drops

• 9 drops

• 10 drops

• 8 drops

Why does soapy water allow fewer drops to fit on a dime compared to regular water?

• Lower surface tension

• Higher density

• Increased viscosity

• Greater polarity

What happens to an ice cube when placed in water?

• It sinks

• It melts immediately

• It floats

• It dissolves

Why does ice float in water but sink in acetone?

• Ice is denser than acetone

• Water is denser than ice

• Acetone is denser than water

• Ice is less dense than water

What is observed when oil is poured into water?

• Water forms a layer above oil

• Oil forms a layer above water

• They mix completely

• They form a homogeneous mixture

Why do oil and water not mix together?

• Oil is denser than water

• Water is more viscous

• Water is non-polar

• Oil is non-polar

What property of water allows a paperclip to float on its surface?

• Capillary action

• High surface tension

• Hydrogen bonding

• Low density

What happens when a paper towel is placed in water?

• It dissolves

• It floats

• It absorbs water and stands

• It repels water

What is observed when a cotton swab with soap touches the surface of milk with food coloring?

• The colors mix evenly

• The colors disappear

• The colors form a circle

• The colors remain unchanged