• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

How does density of a liquid affect the volume of its drop

Extracts from this document...


How does the Density of a Liquid affect the Volume of a Drop Background Research: A drop is formed because liquids have surface tension. Surface tension is a phenomenon in which the surface of a liquid, where the liquid is in contact with gas, acts like a thin elastic sheet. This term is typically used only when the liquid surface is in contact with gas (such as the air). Surface tension causes a drop of liquid to hold together due to the strong bonds between the molecules. Drops form when liquid accumulates at the lower end of a tube or other surface boundary, producing a hanging drop. Droplets of water tend to be pulled into a spherical shape by the cohesive forces of the surface layer. Aim To investigate how the density of a liquid affects the volume of a drop of that liquid. Hypothesis As density increases, the volume will increase due to an increase in surface tension. This is because the denser a liquid is, there is a greater cohesive bonding between particles so there will be a larger volume in the drop Materials: � � Glass pipette (25cm3) ...read more.


goggles � � Do not ingest any of the liquids used in this experiment � � Make sure that the hydrochloric acid doesn't come into contact with skin since it is corrosive. � � Handle the glassware carefully Data Collection Table 1: Number of drops of each liquid to fill 25 ml Liquid Number of drops needed to fill 25ml�0.1 Milk 480 Vegetable oil 688 Vinegar 508 Distilled water 426 Hydrochloric acid 408 Data Processing Volume of liquid in the cylinder Number of drops Calculations Milk: 25/480 =0.052 cm3 Vegetable Oil: 25/688 =0.036cm3 Vinegar: 25/508 = 0.049cm3 Distilled water: 25/426 = 0.058 cm3 Hydrochloric acid: 25/408 = 0.061 cm3 Type of liquid Density (g/cm3) Volume of a drop(cm3) Vegetable oil 0.91 0.036 Distilled water 1.00 0.058 Vinegar 1.01 0.049 Milk 1.03 0.052 Hydrochloric acid 1.19 0.061 Table 2: The volume of a drop of liquid x and the density of liquid x Graph 1: Graph of Density Vs. Volume of a Drop Data Analysis It can be seen that the volume of a drop does generally increase with the increasing density because the points rise from 0.036cm3 to 0.061cm3. ...read more.


the results obtained might have been affected by a changing temperature which was not accounted for � � Because we didn't consider the concentration of the milk, it may have been the root cause of the anomaly in our results. � � Since the concentration of the ethanoic acid in vinegar was not considered, it also caused one of the anomalies because concentration would effect the density of a liquid � � Carry out the experiment again but keep the temperature controlled. This could be done by keeping it in a room with an unvarying temperature and this could be enforced by taking the temperature of the liquid dropped at a time interval � � Carry out the experiment again but use a specific concentration of milk (something equivalent to 2 mol) so the value for the volume for a drop of milk would fit into the smooth curve and not come up as an anomaly � � Carry out the experiment again but use 2mol dm3 concentration of vinegar (so it is equivalent to HCl). This would aid in setting the point for milk into the smooth curve and minimize errors. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Chemistry section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Chemistry essays

  1. Research question - How many molecules are there in a liquid drop?

    These were - distilled water, glycerine, ethanol and ethylene glycol. These liquids have different relative molecular masses. > The change of the dependent variable were monitored by using a measuring scale to observe the change in the masses of the same number of drops when different liquids were tried.

  2. Investigating the effect of different liquid densities on the time taken to release ...

    Plus, propan-1-ol is used as a common solvent and cleaning agent in chemistry laboratories. Also, because it evaporates rapidly, IPA is widely used in astringents to cool the skin and constrict surface blood vessels. * Goggles and lab coat are therefore needed to be worn throughout the experiment.

  1. Investigate the effect of one factor on the boiling temperature of a liquid

    of where the experiment is carried out The experiment will be carried out on one day only and at standard lab conditions Avoid salt residues left on the thermometer when testing water temperature Distilled water will be used to clean the thermometer before every testing of water The type of

  2. Crude Oil

    Crude Oil is mostly located at or near sea as it is composed of tiny marine animals and plants. This is the main reason as to why a production platform, also known was an oil rig is set up. An oil rig is basically a huge offshore platform with the

  1. The Drop of Water

    If the drops vary significantly in size, then the experiment would be a failure. The volume of the water placed in the pipette must also be kept constant to ensure that a variation in the volume in the pipette does not affect the size of the drops. 2.0 Apparatuses ?

  2. Calculating Density -How can you find the volume and density of two regular solids, ...

    Record amount of water. 7. Place the object in the water and record the new measurement. 8. Subtract the first measurement from the second and record answer. 9. Pour the liquid into the graduated cylinder. 10. Record the measurement from the lowest point of the meniscus.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work