Chemistry Properties of Matter Quiz

A nail rusts after being left outside for several weeks. This change is best described as:

• A physical change involving density

• A change in shape due to weather

• A reversible process of oxidation

• A chemical change producing a new substance

Which situation shows a physical change?

• Paper burning to ash

• Milk souring

• Sugar dissolving in tea

• Rust forming on iron

Which observation indicates a chemical property is being demonstrated?

• Water boiling at 100°C

• Salt dissolving in water

• Wood burning in a fireplace

• Ice melting into water

Vinegar reacts with baking soda to produce bubbles. What does this demonstrate?

• The solubility of the vinegar

• The density of baking soda

• A chemical change releasing gas

• A physical change caused by gas pressure

A chemist mixes two clear liquids and observes a temperature increase and color change. This indicates:

• A chemical change

• A physical change

• An endothermic process

• A condensation process

A student records the boiling point, color, and hardness of a mineral. These are examples of:

• Chemical property

• Physical properties

• Reactivity measures

• Molecular compositions

In a lab, magnesium is burned and turns into a white powder. This is best described as:

• Phase change

• Physical change

• Chemical change

• Melting of metal

A factory wants to transport an acidic solution. Which property is MOST important in choosing the container?

• Color

• Magnetism

• Thermal conductivity

• Chemical resistance

Why is helium used in balloons instead of hydrogen, even though hydrogen is lighter?

• Helium is more colorful

• Hydrogen is chemically reactive

• Helium has a lower boiling point

• Hydrogen has a higher density

Which chemical property of gasoline makes it dangerous to store near heat sources?

• Density

• Boiling point

• Flammability

• Solubility