Electron was discovered by?

The soul of chemistry is dealing with___________?

A. Internal structural changes in matter

B. Composition of matter

C. Properties of matter

D. Composition and properties of matter

The radioactive isotope of hydrogen is called___________?

A. tritium

B. deuterium

C. protium

D. ortho-hydrogen

Sodium carbonate is produced by____________?

A. haber process

B. Amonia solvay process

C. decons process

D. lead chamber process

Which of the following is a substance?

A. Sea water

B. Brass

C. Tape water

D. Graphite

E. Sand

Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________?

A. ionic substances

B. metallic substances

C. molecular solids

D. covalent network solids