Physical and Chemical Properties and Changes of Matter

Front

What is density and is it a chemical or physical property?

Back

Density is a physical property that measures the mass of a substance per unit volume.

Front

Which of the following is NOT a physical change: melting ice, burning paper, or dissolving sugar?

Back

Burning paper is NOT a physical change; it is a chemical change.

Front

What is an example of a chemical change involving copper?

Back

A copper penny turning greenish after a few years is an example of a chemical change.

Front

How do you calculate the density of an object?

Back

Density is calculated by dividing the mass of the object by its volume (Density = Mass/Volume).

Front

What is the boiling point of water and is it an intensive or extensive property?

Back

The boiling point of water is 100°C at standard atmospheric pressure, and it is an intensive property.

Front

Define a physical property of matter.

Back

A physical property is a characteristic of a substance that can be observed or measured without changing its chemical composition.

Front

What is a chemical property of matter?

Back

A chemical property is a characteristic that can only be observed during a chemical reaction, indicating how a substance interacts with other substances.

Front

What happens to the properties of matter during a physical change?

Back

During a physical change, the properties of matter may change, but the chemical composition remains the same.

Front

What is an example of a physical change?

Back

An example of a physical change is melting ice into water.

Front

What is the difference between intensive and extensive properties?

Back

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