Physical and Chemical properties and changes.

Front

What is a physical property?

Back

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

Front

What is a chemical property?

Back

A characteristic of a substance that describes its ability to undergo a specific chemical change, such as flammability or reactivity.

Front

Define hardness as it relates to materials.

Back

Hardness is a measure of a material's resistance to deformation or scratching.

Front

What does malleability refer to in materials science?

Back

Malleability is the ability of a material to be deformed under compressive stress, often characterized by the material's ability to form a thin sheet.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition, such as changes in state or shape.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances, often indicated by color change, gas production, or precipitate formation.

Front

Give an example of a physical change.

Back

Folding origami is an example of a physical change, as it alters the shape of the paper without changing its chemical composition.

Front

What happens when two liquids are mixed and a solid forms?

Back

This is an example of a chemical change, as a new substance (the solid) is formed from the reaction of the two liquids.

Front

What is the difference between physical and chemical properties?

Back

Physical properties can be observed without changing the substance, while chemical properties can only be observed during a chemical reaction.

Front

How can you identify a chemical change?

Back

Indicators of a chemical change include color change, temperature change, gas production, and the formation of a precipitate.