Bell Work - Wed., Nov. 20, 2024

Front

What is a physical property of an object?

Back

A characteristic of a substance that can be observed or measured without changing its identity, such as color, shape, or state.

Front

What is a chemical property of a substance?

Back

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

Front

What distinguishes a physical change from a chemical change?

Back

A physical change alters the form or appearance of a substance without changing its composition, while a chemical change results in the formation of new substances.

Front

Give an example of a physical change.

Back

Crumpling a piece of paper.

Front

Give an example of a chemical change.

Back

Toasting bread.

Front

What is an observable property that describes the state of a system?

Back

It refers to physical properties such as temperature, phase (solid, liquid, gas), and color.

Front

What does it mean for a substance to be flammable?

Back

It means that the substance can easily ignite and burn in the presence of an ignition source.

Front

What is the significance of observing physical properties in a substance?

Back

Observing physical properties helps in identifying and classifying substances.

Front

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

Back

If the change results in new substances being formed, it is a chemical change; if the original substance remains the same, it is a physical change.

Front

What are some common physical properties?

Back

Color, odor, density, melting point, boiling point, and solubility.