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 speed of light is __________
(A) 280,000 km/s
(B) 300,000 km/s
(C) 320,000 km/s
(D) none of these
The speed of sound in air at sea level is approximately____________
(A) 300 meter per second
(B) 320 meter per second
(C) 340 meters per second
(D) 370 meter per second