Which physical property is used to distinguish between metal and non metal?

(a)  

State 2 soft graphite

(a)  

State good conductor graphite

(a)  

Explain why graphite is soft and good conductor of electricity?

(a)  

copper is a?

(a)  

carbon dioxide is a?

(a)  

Brass is a?

(a)  

Mixture

(a)  

Compound

(a)  

Element

(a)  

Nucleon number

(a)  

Why the two isotopes of bromine have the same chemical properties?

(a)  

Atomic number

(a)