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Questions and Answers

What is the definition of a molecule?

A group of two or more atoms or ions held together by attractive forces

Any gaseous particle regardless of its composition

A single atom connected by non-covalent interactions

A group of two or more atoms held together by attractive forces (correct)

What distinguishes a heteronuclear molecule?

It is a chemical compound composed of more than one element (correct)

It consists of atoms of one chemical element

It consists of ions instead of atoms

It is any gaseous particle regardless of its composition

In the kinetic theory of gases, how is the term 'molecule' often used?

For individual noble gas atoms

For any gaseous particle regardless of its composition (correct)

For atoms connected by non-covalent interactions

For ions satisfying the criterion of chemical bonds

How is a homonuclear molecule defined?

It consists of atoms of one chemical element Signup and view all the answers

What do atoms and complexes connected by non-covalent interactions typically NOT form?

Single molecules Signup and view all the answers

What is the primary reason that humans cannot see atoms with conventional microscopes?

Atoms are smaller than the shortest wavelength of visible light Signup and view all the answers

What is the main factor that distinguishes one chemical element from another?

The number of protons in their atoms Signup and view all the answers

What is the term used to describe atoms with the same number of protons but a different number of neutrons?

Isotopes Signup and view all the answers

What is the term for an atom that has more electrons than protons and has an overall negative charge?

Negative ion (or anion) Signup and view all the answers

Where is more than 99.94% of an atom's mass located?

In the nucleus Signup and view all the answers