ordinary matter

Deductions

• chemical anti-element is subclass of ordinary matter ⇐ (chemical element is subclass of ordinary matter), (chemical element is opposite of chemical anti-element)
• chemical element is subclass of ordinary matter ⇐ (chemical element is subclass of chemical entity), (chemical entity is subclass of ordinary matter), (is subclass of is a transitive relation)
• chemical substance is subclass of ordinary matter ⇐ (chemical substance is subclass of chemical entity), (chemical entity is subclass of ordinary matter), (is subclass of is a transitive relation)