A student measures the volume of a substance to be 3.25 mL. Can the student determine the identity of the substance from this measurement? a Yes, because volume is an intensive property b Yes, because volume is an extensive property c No, because volume is an extensive property d No, because volume is an intensive property

c No, because volume is an extensive property

Explanation:

Before proceeding;

An Extensive property is a property that depends on the amount of the matter present in a sample. Example is Mass.

An intensive property on the other hand does not change as the amount of matter changes. This most useful in determining the identity of substances. Examples include; Density, color, boiling point etc.

Volume is an extensive property and it cannot be used to determine the identity of a substance.

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied