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 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
A. Carbon dioxide
B. Carbon monoxide
C. Nitrogen
D. Hydrogen
Radon is___________?
A. germon radio
B. radio active gas
C. artificial fibre
D. an explosive
A. Velocity
B. Acceleration
C. Space
D. Temperature
A. Salt
B. Chlorine
C. Carbon dioxide
D. Water
A. River water
B. Canal water
C. Sea water
D. Water in a lake