PHYSICS - Density

Density - 1. Scalar Quantity; The ratio of the mass of an object to the volume it occupies; how compact a material is. 2. Greater the mass, greater the density. 3. p=m/v
4. kg/m3 or g/cm3

Mass - 1. Scalar Quantity; The measure of the amount of matter an object has. m = V*p
2. g or kg. 3. Physical Properties of matter 4. Measured using beam balance or digital balance

Volume - 1. Scalar Quantity; The amount of space an object occupies. V = m/p
2. ml, L, or m3. 3. Physical Properties of matter 4. Measured using graduated cylinder or displacement can

Conversion - 1 Kg = 10³ g (1000 grams) , 1 g = 10^-3 Kg (0.001 Kg)
1 m3 = 10^6 cm3 (1000000 cm3) , 1 cm3 = 10^-6 m3 (0.000001 m3)
g/cm × 10³ = kg/m3

Measuring volume - 1. Liquids: Pour into graduated cylinder and look at the side.
2. Regular Solid: Measure and multiply l*w*h
3. Irregular Solid: Displacement can is filled up to spout. solid is lowered in the water. Displaced water is collected in a beaker and emptied into a measuring cylinder

Measuring density in liquids - 1. Measure mass of measuring cylinder on electric balance
2. Add liquid to cylinder and record mass of cylinder + liquid using electronic balance
3. To find mass of liquid, subtract mass of liquid - measuring cylinder
4. Volume V can be read directly from measuring cylinder
5. Use equation

Measuring density in solids - 1. Regular Solids: Calculate V using formulas. Record mass with electric balance. Calculate density.
2. Irregular Solids - Measure mass with electronic balance. FIll measuring cylinder with X volume of water. Lower the solid and measure new volume Y. Volume = Y - X. Use equation