Brownian motion Brownian motion is the of particles without .. and this can be seen by viewing a smoke cell under microscope

3.3 The concept of density 1. The density of a substance is defined as the of mass contained in the substance for a unit ... 2. We can easily find the density of a substance if we know the . and the of the substance. 3. The of substance depends on: A. MASS : The bigger its mass, the . its density is B. VOLUME : The bigger its volume, the its density is.4. Density (g/cm3) = Mass (g) / Volume (cm3) 5. D = M/V 6. M = DV 7. V = M/D 8. Unit of density is kg/m or g/cm. 9. substances have different densities.10. The density of a substance increases if mass .. volume

Example : Osmium is a very dense metal. If a piece of osmium has a mass of 50g and a volume of 2.22cm3, what is its density?

Table show the density for different type of matter

Why do some objects and liquids float?1. A substance is able to or .in a liquid depending on its . 2. A . substance floats in a denser liquid whereas a denser substance in a dense liquid. Example : Ice floats in water because it is less dense than water.A gold sinks in mercury because it is denser than mercury.

How to compare the densities of objects? An substance which is .. dense will float in a denser liquid. An denser substance will .in a liquid which is less dense.

OBSERVATION:

OBSERVATION: