<u>The correct answers are </u>
- An atom of oxygen and the ion of oxygen both have 8 protons.
- As you add or remove neutrons from the nucleus, isotopes are formed.
Answer: Options A and D
<u>Explanation:</u>
An isotope of an element is formed by varying their number of neutrons and not on changing the number of electrons or protons. Similarly, an atom can be converted into an ion by adding or removing one or more electrons.
So the number of protons will not be changed for becoming an ion. Thus, the correct answers are that an atom of oxygen and ion of oxygen will be having 8 protons. Similarly, an isotope formation is possible on addition or removal of neutrons from the nucleus. All other options are not true as there will be no change in the number of electrons for isotope formation.
Krypton is the only element that begins with the letter K.
Answer:
Coulomb's law describes the magnitude of the force between two charged particles.
Explanation:
Coulomb's Law states that:
The magnitude of force between two charged particles is directly proportional to the product of the charges of the two particles and inversely proportional to the square of the distance between the two particles.
The force between two likely charged particles is positive.
Likely charged particles repel each other.
The force between two oppositely charged particles is negative.
Unlikely charged particles attract each other.
Ethanol and Ethanoic adid make Ethyl ethanoate.
Answer:
Because of increase in enzyme activity
Explanation:
Increase in salt concentration of sodium alginate yeast can lead to an increase in enzyme reaction/activity, causing the yeast spheres to rise up faster to the surface.