Chemical and Physical Properties Assessment

This video tutorial from MooMoo Math and Science explains the difference between physical and chemical properties. Physical properties describe the physical characteristics of a substance, such as luster, hardness, ductility, malleability, conductivity, density, solubility, melting point, and boiling point. Chemical properties, on the other hand, become evident after a chemical reaction and include flammability, radioactivity, oxidizing ability, corrosiveness, toxicity, explosiveness, and pH level. The video concludes with a reminder to be kind.

What is the main difference between physical and chemical properties?

• Chemical properties are the same as physical properties.

• Physical properties describe physical characteristics, while chemical properties become evident after a chemical reaction.

• Chemical properties describe physical appearance.

• Physical properties describe chemical reactions.

Which of the following is NOT a physical property?

• Density

• Luster

• Flammability

• Malleability

What does the term 'ductile' refer to in physical properties?

• Ability to be pulled into a wire

• Ability to conduct electricity

• Ability to be scratched

• Ability to dissolve in water

At what point does a substance change from solid to liquid?

• Sublimation point

• Freezing point

• Melting point

• Boiling point

Which property describes how a substance reacts with an open flame?

• Toxicity

• Flammability

• Corrosiveness

• Radioactivity

What does the term 'oxidizer' refer to?

• A substance that reduces combustion

• A substance that promotes combustion

• A substance that is non-reactive

• A substance that is inert

Which chemical property involves the potential of hydrogen?

• Corrosiveness

• pH level

• Explosiveness

• Toxicity

What is a characteristic of a corrosive substance?

• It is always safe to handle.

• It is non-reactive.

• It can strip electrons from metals.

• It can explode easily.

Which of the following is a measure of how acidic or basic a substance is?

• pH

• Density

• Conductivity

• Solubility

What is the reminder given at the end of the video?

• Kindness multiplies kindness.

• Always study hard.

• Stay curious.

• Never give up.