M15L2 Chemical and Physical Properties

Front

What is a chemical property?

Back

A characteristic of a substance that can only be observed during a chemical reaction, such as reactivity with water or flammability.

Front

What is a physical property?

Back

A characteristic of a substance that can be observed or measured without changing the substance's chemical identity, such as color, odor, or hardness.

Front

Give an example of a chemical property.

Back

Reacts with water to form a gas.

Front

Give an example of a physical property.

Back

Odor.

Front

What does 'hardness' refer to in terms of physical properties?

Back

The resistance of a material to being scratched or dented.

Front

What does 'luster' mean?

Back

The way a surface reflects light; it can be shiny or dull.

Front

What is the significance of color as a physical property?

Back

Color can help identify substances and indicate their physical state.

Front

How can you determine if a property is physical or chemical?

Back

If the property can be observed without changing the substance, it is physical; if it involves a change in the substance, it is chemical.

Front

What happens to a substance's chemical properties during a chemical reaction?

Back

They change, as new substances are formed with different properties.

Front

What is the difference between intensive and extensive physical properties?

Back

Intensive properties do not depend on the amount of substance (e.g., density), while extensive properties do (e.g., mass, volume).