The substance which has definite composition with definite physical and chemical properties is said to be pure substance. These substances are not separated by the different physical techniques such as filtration, distillation, evaporation etc.
The clear water pumped from a deep aquifer is a pure substance because water is a pure compound which consist of constant single type of atoms or group of atoms and water has specific value of boiling and melting point. Water is also not separated into units or constituents by physical technique.
Hence, clear water pumped from a deep aquifer is a pure substance.
The type of radiation which is identical to a high energy electron is known as a(n) beta.
Answer: A) or the first option.
The region where an electron is most likely to be is called an orbital
Choose five elements from the periodic table and arrange them according to increasing atomic radii increasing ionization energy increasing electronegativity in increasing metallic property
Explanation:
A 57.9 g sample of glass is cooled by 2.70'C how much heat does it release
1560
