Question

for a science fair project about food and chemistry, bill looks around his kitchen for examples of covalent compounds. what evidence can bill use in his project to show that water (h₂o) acts like other covalent compounds? he can demonstrate that water is a liquid with a definite volume. he can demonstrate that water can be boiled on a simple kitchen stove. he can demonstrate that water can sometimes be used to conduct electricity. he can demonstrate that water can change shape and either be sprayed or poured.

Explanation:

Covalent compounds generally have low boiling points. Water has a relatively low boiling point of \(100^{\circ}C\) (at standard pressure), which can be achieved on a simple kitchen stove. This is a characteristic property of covalent compounds.

• A liquid with a definite volume is a property of liquids in general, not specific to covalent compounds.
• Conducting electricity is not a typical property of covalent compounds (pure water is a poor conductor; conductivity usually occurs due to impurities).
• Changing shape (being sprayed or poured) is a property of liquids in general, not specific to covalent compounds.

Answer:

He can demonstrate that water can be boiled on a simple kitchen stove.