Physical and Chemical Changes Quiz

Physical and Chemical Changes

• A common example of a physical change is melting or freezing of water, where the state changes but the chemical composition remains the same.

Characteristics of Chemical Changes

• A characteristic of a chemical change is the formation of a new substance, often accompanied by a change in color, odor, or production of heat/light.

Molecular Compounds

• Molecular compounds are characterized by being composed of molecules, where the atoms are chemically bonded together.
• A common property of molecular compounds is that they are typically soft and have low melting and boiling points.
• Molecular compounds are often brittle and exhibit poor electrical conductivity.
• The statement "Molecular compounds are typically composed of only two elements" is true about the properties of molecular compounds.