Give an experiment to determine the volume of the metal piece including aim,apartus,theory ,procedure,result and precaution.
Answers
Aim of the experiment
To measure the density of liquids and solids.
Method
Method 1: A regular shaped object
Use a ruler to measure the length (l), width (w) and height (h) of the object.
Place the object on the top pan balance and measure its mass.
Calculate the volume of the cube using ( l \times w \times h).
Use the measurements to calculate the density of the object.
Method 2: An irregular shaped object
Place the object on the top pan balance and measure its mass.
Fill a measuring cylinder so that there is enough water to cover the object when it is placed inside the cylinder. Take the reading of the volume.
Carefully lower the object into the cylinder.
Take the new reading of the volume. Subtract the original reading to obtain the volume of the object.
Use the measurements to calculate the density of the stone.
Method 3: A liquid
Place the measuring cylinder on the top pan balance and measure its mass.
Pour eg 30 cm3 of liquid (eg water) into the measuring cylinder and measure its new mass.
Subtract the mass in step 1 from the mass in step 2. This is the mass of 30 cm3 of water.
Use the measurements to calculate the density of the water.
Results
Some example results could be:
Object Mass (g) Volume (cm³) Density (g/cm³)
Steel block 468 60
Stone 356 68
Water 30 30
Analysis
Using those results – the densities can be calculated using:
Density = mass ÷ volume
Mass of steel block = 468 g
Volume of steel block = 60 cm3
Density = mass ÷ volume = 468 ÷ 60 = 7.8 g/cm3
For a stone of mass 356 g, the volume of water in the measuring cylinder rose by 68 cm3.
Density = mass ÷ volume = 356 ÷ 68 = 5.2 g/cm3
Mass of 30 cm3 of water is found to be 30 g.
Density = mass ÷ volume = 30 ÷ 30 = 1 g/cm3
Evaluation
Density can be measured for regular solids, irregular solids and liquids.
Densities calculated from measurements are subject to experimental error. This could be because:
the top pan balances used by different people may not be identically calibrated
the resolution of the measuring cylinders may be different, causing different values for the volume to be recorded
Hope helps
Answer:
aim:to find the volume of the metal piece
appartus : a measuring cylinder,a piece of metal
theory: the volume of the metal will be equal to the amount of water it displaces.
procedure:
- fill a beaker to a certain reading on the measuring cylinder
- mark that reading and name it initial reading
- now drop the metal slowly into the measuring cylinder
- mark the reading now and name it final reading
- find the difference between final reading and initial reading
- this would be equal to the volume of the metal piece
Result:The volume of the metal is...(whatever the value comes when you perform the experiment)
Precaution:
- Drop the the metal slowly into the measuring cylinder taking care that water is not splashed out
- Take the readings only when the water is still and not when it has any sort of motion.
Hope it helps you.
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