Physical and Chemical Properties and Changes Quiz

Which of the following is a physical property of a substance?

• Production of gas during a reaction

• Change in color due to rust formation

• Density

• Formation of a precipitate

What is a chemical change?

• Ice melting into water

• Tearing paper into pieces

• Iron rusting

• Dissolving salt in water

Which physical property can help you identify a metal?

• Ability to burn

• Luster (shine)

• Reactivity with acid

• Production of gas

Which option is an example of a homogeneous mixture (solution)?

• Soil

• Granite

• Salt dissolved in water

• Trail mix

Which option correctly classifies an element versus a compound?

• Oxygen gas vs. iron

• Water (H₂O) vs. hydrogen peroxide (H₂O₂)

• Gold (Au) vs. table salt (NaCl)

• Carbon dioxide vs. dirt

Density is defined as:

• Mass per unit volume

• Volume per unit mass

• Mass times volume

• Mass minus volume

Which property describes how well something conducts electricity?

• Brittleness

• Conductivity

• Odor

• Malleability

A substance that is shiny, ductile, and conducts heat well is likely a:

• Metal

• Nonmetal

• Gas

• Liquid

Which of the following is not evidence of a chemical change?

• Change in color

• Formation of a precipitate

• Melting

• Release of a gas

Burning wood is a chemical change because:

• It melts the wood

• It creates ashes and smoke

• It dissolves wood in water

• The wood separates into pieces