Show:
Mass and weight
Density
Volume
Physical and chemical properties
Observed & measured properties,Units of properties
100

What is mass?

It’s the amount of matter in a body

100

Density is observed or measured? 

Physical or chemical property?

Measured physical property

100

The unit used to measure volume of liquids is:

ml and L

100

An apple which is turning brown. Which property does it show?

Oxidation which is a chemical property

100

S.I unit of mass

Kilogram

200

What is weight?

It’s a measure of gravitational force acting on a body

200

What is the formula used for calculating density ?

D = M /V

200

Tool of measuring volume of liquids.Name 2

Graduated cylinder and beaker

200

Putting sugar in water. Which property does it show?

Solubility which is a physical property

200

S. I unit of weight

Newton

300

Is mass variable or constant ?

Constant

300

What is the unit of density of liquids ?

g/ ml

300
  • A graduated cylinder originally contains 47 ml of water, after adding a rock the volume became 53 ml. Use the above information to calculate the volume of the rock.

V1 = 47 ml , V2 =53 ml  ,Volume of rock = V2-V1 = 53-47 = 6 ml = 6 cm3

300

Setting wood to fire. Which property does it show?

Flammability which is Chemical property

300

S. i unit of volume

m3

400

Tool of Measurement of weight

Spring scale

400

What is the density of an object that has a mass of 25g and volume of 10 cm3  ?

D = M /V = 25 ÷10 = 2.5 g/ cm3

400

You have a locker whose dimensions are 80, 60 and 30 cm, calculate its volume?

V = L×W ×H = 80×60×30 = 144000 cm3

400

Aluminium sheets that are used for wrapping food.  Which property does it show?

Malleability which is physical property .

400

List 3 chemical properties of matter

Oxidation ,reactivity ,flammability

500

List three tools measure mass ?

Electric digital balance, Pan balance ,triple beam balance

500
  • . You found an unknown solid, with no definite shape. This solid has a mass of 25g.You placed it in a graduated cylinder containing 25ml water, the water level increased till 30ml.
  • Calculate the density of this solid and use the table below to identify it:
  • Silver=10.5 g/cm3
  • Pyrite =5.02 g/cm3
  • Zinc=7.13 g/cm3
  • We first have to find the volume of this solid:


V1 = 25 ml , V2 =30 ml  ,Volume of rock = V2-V1 = 30-25 = 5 ml = 5 cm3

  •  
  • Then we should find the density:
  • Mass = 25 g   Volume = 5 cm3

     D = M /V = 25 ÷5 = 5 g/ cm3

  

From the table we can know that the solid is pyrite 


500

In a graduated cylinder containing 90 ml of water, you tossed an igneous rock, the volume of water became 170 ml. Calculate the volume of the rock?

V1 = 90 ml , V2 =170 ml  ,Volume of rock = V2-V1 = 170-90 = 80 ml = 80 cm3

500

The population in motley is 595 while in Waterloo it's 99000 ,Which property does it show?

Density which is physical property

500

List 3 observed and 3 measured physical properties

Observed

  • Color
  • Texture
  • Luster

Measured

  • Volume
  • Mass
  • Density