Electrons orbit slowly around the atom.
Electrons travel in one flat path around the nucleus of an atom.
Electrons are traveling so fast that it is impossible to know their exact locations.
According to the atomic model given by Rutherford, the atom is a dense, and tiny positively charged core known as the nucleus, which is enveloped by lighter and negatively charged electrons. An electron refers to a stable subatomic particle comprising a negative charge, which is found in all the atoms.
The following are the correct statements:
1. The electrons are situated in orbits or shells around the atom.
2. The electrons are traveling so fast, that it becomes almost impossible to locate their precise locations.
large amounts of matter.
(2) Small amounts of matter are converted into
large amounts of energy.
(3) Heavy nuclei are split into lighter nuclei.
(4) Light nuclei are combined into heavier nuclei
Fusion and fission are nuclear reactions that convert a small amount of matter into a large amount of energy.
The fusion reaction is the reaction in which the molecules combine and form energy. The fission reaction is the decomposition nuclear reaction where the matter is degraded into a small entity and the energy is released.
The energy is not converted into matter in both reactions. There is no splitting or combination of nuclei in both reactions.
Thus, the small amount of matter is converted into a large amount of energy is correct.
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b. less than
c. greater than
Answer:
a, equal to
Explanation:
Answer: Larger proportion
Explanation:
A binary solution is made up of two components , one of which is solute and another is solvent.
A solute is defined as the component which is present in smaller proportion. It can be in solid, liquid or gaseous phase.
A solvent is defined as the component which is present in larger proportion in a solution. It can be in solid, liquid or gaseous phase.
Hence, solvent is present in larger proportion.
Answer:
aqueous solutions of silver nitrate and sodium chloride turn cloudy after mixing aqueous solutions of hydrochloric acid and sodium hydrogen carbonate produces bubbles on mixing Sodium hydroxide is mixed with water and the container feels warmer
Explanation:
A chemical change involves the formation of new substances. Also heat is absorbed or released in a chemical change. Another name for a chemical change is a chemical reaction.
In the first case, a reaction of the sort;
AgNO3(aq) + NaCl(aq) ---> AgCl(s) + NaNO3(aq)
The cloudy solution is due to the formation of AgCl precipitate.
In the second case, a reaction of the sort;
HCl(aq) + NaHCO3(aq) ---> NaCl(aq) + CO2(g) + H2O(l)
The gas evolved is due to the formation of CO2 in the process. Heat is also evolved showing that it is a chemical change.
Answer: radioactive isotopes may be used to Trace complex chemical processes.
Radioactive isotopes can be used to study complex chemical processes, such as determining the age of ancient artifacts using carbon dating.
Radioactive isotopes can be used to study complex chemical processes. This is because some isotopes emit radiation that can be detected and measured, allowing scientists to track the movement and transformations of chemicals in a reaction. For example, carbon-14 is a radioactive isotope that can be used to determine the age of ancient artifacts through a process called carbon dating. By measuring the amount of carbon-14 remaining in an object, scientists can calculate how long it has been since the carbon-14 was last replenished.
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