A gas can be produced when you boil water (steam). This isn't classified as a chemical change, though. This is because a new substance is not formed, the water just changes physical states from liquid to gas
Answer:
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Explanation:
soil pollution makes the soil infertile
Answer:
4: Hydro electrical energy
5:Flase the law of conservation of energy is not violated by transformer.
Explanation:
4:Hydroelectric energy, also called hydroelectric power or hydroelectricity, is a form of energy that harnesses the power of water in motion—such as water flowing over a waterfall—to generate electricity. People have used this force for millennia.
5:Quantum Physics and Law of Conservation of Energy.
Niels Bohr, Hans Kramers, and John Slater proposed that these electrons violated the law of conservation of Energy momentarily. They stated that with each jump, energy is either created or destroyed by the electrons during the whole process.
B)
Group 1 elements are metals and will form ionic bonds with non-metals, such as those from group 7. Iodine is from group 7.
Answer: Option (1) is the correct answer.
Explanation:
Oxygen, sulfur, selenium and tellurium are all group 8 elements. As we go gown the group there will be decrease in electronegativity of atoms.
Also, more is the electronegativity of an atom more it will attract the electrons towards itself. This will result in the formation of partial charges on the combining atoms. Thus, the molecule becomes polar.
Here, oxygen is the most electronargative out of the given options, so it will attract the electrons more towards itself. Hence, it will have the strongest hydrogen bonding at STP.