Periodic Table and Properties

Front

What is a physical property?

Back

A physical property is a characteristic of a substance that can be observed or measured without changing the substance's chemical identity. Examples include color, melting point, and density.

Front

What is a chemical property?

Back

A chemical property is a characteristic of a substance that becomes evident during a chemical reaction. It describes the substance's ability to undergo changes that transform it into different substances. Examples include reactivity with oxygen and acidity.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting ice or dissolving sugar in water.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and the breaking and forming of bonds. Examples include rusting iron and burning wood.

Front

What does it mean for a substance to be malleable?

Back

Malleability is the ability of a substance to be deformed or shaped under compressive stress, often by hammering or rolling. Metals like gold and aluminum are known for their malleability.

Front

What does it mean for a substance to be magnetic?

Back

Magnetic refers to the property of a material that allows it to attract or repel other materials due to the presence of a magnetic field. Iron, nickel, and cobalt are examples of magnetic materials.

Front

What is rusting?

Back

Rusting is a chemical process that occurs when iron reacts with oxygen and moisture in the environment, forming iron oxide (rust). It is an example of a chemical change.

Front

What is the difference between a physical and chemical property?

Back

A physical property can be observed without changing the substance's identity, while a chemical property can only be observed during a chemical reaction.

Front

What is an example of a physical change?

Back

An example of a physical change is the melting of ice into water. The chemical composition of water remains the same.

Front

What is an example of a chemical change?

Back

An example of a chemical change is the souring of milk, which involves a chemical reaction that alters the composition of the milk.