Properties of Matter and Atomic Structure

Front

What is combustibility?

Back

Combustibility refers to how quickly a substance will start to burn or catch fire.

Front

What are subatomic particles with a negative charge?

Back

Electrons are subatomic particles that carry a negative charge.

Front

Which element has no neutrons in its nucleus?

Back

Hydrogen is the only element that has no neutrons in its nucleus.

Front

What are subatomic particles with a positive charge?

Back

Protons are subatomic particles that carry a positive charge.

Front

What is a physical property?

Back

A physical property is a characteristic of a substance that can be observed without changing its chemical composition, such as the fragrance of a flower.

Front

What is the atomic structure of an atom?

Back

An atom consists of a nucleus containing protons and neutrons, surrounded by electrons in orbitals.

Front

What is the difference between physical change and 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

What is the definition of an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is the role of neutrons in an atom?

Back

Neutrons are subatomic particles that contribute to the atomic mass and stability of the nucleus but have no charge.

Front

What is the significance of atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.