Relationship between mass and volume?

Question

a. As the mass increases, the volume increases.
b.The mass and volume are directly proportional.
c. Both A and B

I'm not sure if it is b or c. Since mass is dependent on volume I'm not sure it would be correct to say that as the mass increases the volume increases, it should say as the volume increases then the mass increases right?

Answer 1

think about density. The equation for calculating density is



d = m/V rearranging this gives m = d.V



In other words mass is directly proportional to volume, and as the mass increases so does the volume. Answer c.

Answer 2

No, volume is also dependent of temperature and pressure that is why often "at standard temperature and pressure" are often used as specifications in experiments. A balloon will expand as pressure drops with out increasing mass.

Answer 3

DENSITY = MASS / VOLUME

so MASS = DENSITY * VOLUME

NOW KEEPING THE DENSITY CONSTANT WE CAN MAKE A GEST THAT MASS IS DIRECTLY PROPRTIONAL TO VOLUME I.E. IF MASS WILL INCREASE VOLUME WILL INCRESE " PROVIDED DENSITY OF THE MATTER IS CONSTANT : NOTE THIS OK ___ ANS IS (C)



PROPORTIONAL MEANS IF A PHYSICAL QUANTITY INCREASES ITS INCREASE IS ASSOCIATED WITH A PHYSICAL QUANTITY OF OTHER ONE