Answer: (1) Nuclear reactions involve a change in an atom's nucleus, usually producing a different element. Chemical reactions, on the other hand, involve only a rearrangement of electrons and do not involve changes in the nuclei.
(2) Rates of chemical reactions are influenced by temperature and catalysts. Rates of nuclear reactions are unaffected by such factors.
(3) Nuclear reactions are independent of the chemical form of the element.
Answer:
we do the best possible in our
The troposphere is the lowest level of earths atmosphere. Cloud formations and weather conditions Are most commonly seen in this later. So the correct answer is B.
Answer:
Substance A is a Giant covalent structure with covalent bonding
Explanation:
Substance A is a Giant covalent structure. There are strong covalent bonds between the atoms and a large amount of heat energy is needed to break the bonds resulting in high melting point. Substance A does not conduct electricity in molten state reason being, it exist as molecules which are electrically neutral and there are no mobile charged carriers.
Hope this helps!
Answer:
The process of unstable (or radioactive) atoms becomes stable by emitting radiation. This event over time is called radioactive decay. Alpha decay results in the loss of two protons and two neutrons from the nucleus
