Describe professions for chemists
1 answer:
Answer:
A chemist searches for new knowledge about chemicals and use it to improve the way we live. He or she may develop products such as synthetic fibers, drugs and cosmetics. Chemists create processes, including all refining and petrochemical processing, that reduce energy use and pollution.
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Answer:
2 FeCl3 → 2 Fe + 3 Cl2
Explanation:
2 Fe and 6 Cl on the reactants side, and 2 Fe and 6 Cl on the products side.
Completely natural process with almost no harmful side effects
The answer is Ernest Rutherford.
<h3>
Answer: </h3>
d) 1 and 4
<h3>Explanation:</h3>
Elements are made up of particles known as atoms. Atoms of the same element have the same properties as the element. The atoms of an element may differ in terms of the number of neutrons and have a different mass number, such atoms are known as isotopes. However, the isotopes have an equal number of protons or atomic number. In this case, atom 1 has a mass number of 20 and an atomic number of 10 while atom 4 has a mass number of 21 and an atomic number of 21. Therefore, atom 1 and 4 are isotopes of element E.
It decreases because it is losing an electron
