millikan oil drop experiment

Take hydrated copper (II) sulphate crystals in a test-tube and heat. On heating, the blue crystals in the test tube start turning white. Water vapours are released that condense on the cooler part of the test tube. Collect the water drops in a dish. The crystalline copper sulphate turns ..

Fill a clean dry round-bottomed flask with dry ammonia, close it by a one holed stopper, through which a long jet tube is introduced. The free end of the tube is dipped into a trough of water as shown in figure 6.5. Add two or three drops of an acid and a small quantity of phenolphth..

>Red-hot wood charcoal coverts carbon dioxide to carbon monoxide. The uses of wood charcoal are: Wood charcoal is mostly used as a fuel as it catches fire easily. It is used in gas masks as an adsorbent. It is also used as a decolourising agent for sugar, oils, alcohol, petroleum products..

Aristotle, the great ancient philosopher performed some experiments to study the speed of freely falling objects. He observed that when two bodies of different masses were dropped simultaneously from the same height, the heavier object reached the Earth's surface earlier than th..

Place two coins A and B near the edge of a table as shown in the figure. Simultaneously drop the coin A vertically and flick the coin B horizontally. After a while we will hear just one clink, showing that both the coins reach the ground at the same tim..

Small drops of oil formed by a sprayer are allowed to fall in between a positively charged upper metal plate and a negatively charged lower metal plate. The space between the two plates is irradiated with X-rays. This displaces some electrons of the air molecules, which consequ..

Position of an element in the Periodic Table, its atomic number and atomic mass Periodic Table to identify metals, semimetals, nonmetals, and halogens Periodic Table to identify alkali metals, alkaline earth metals and transition metals, and trends in ionization energy, electronegativity, and t..

Position of an element in the Periodic Table, its atomic number and atomic mass Periodic Table to identify metals, semimetals, nonmetals, and halogens Periodic Table to identify alkali metals, alkaline earth metals and transition metals, and trends in ionization energy, electronegativity, and t..

Inertia - It is clear from Galileo's experiments that all objects have a tendency to continue in their state of rest or of uniform motion until an external force acts on it. The following examples will help to understand the observations of Galileo's experiment. Place a cardboar..

We have already seen that a candle can continue to burn in chlorine. However if turpentine oil, another hydrocarbon, is sprayed into a jar of chlorine, or if a filter paper dipped in turpentine oil is dropped into a jar of chlorine, the reaction is vigorous. In the se..