What distinguishes solids, liquid and gases is that O atoms move fastest in gases, slower in liquids and are rigidly connected in solids atoms move fastest in solids, slower in liquids and they are rigidly connected in gases the temperature of gases is always higher the temperature of solids is higher because they have more energy QUESTION 9 Two atoms of the same element O always have the same number of neutrons and protons O always have the same number of protons but can have different numbers of neutrons O always have the same number of electrons and protons O(a) and (c) QUESTION 10 We know that atoms of different elements combine to form molecules of compounds like table salt and water. What makes these bonds possible is Othe number of protons the number of electrons the electric force that attracts electrons and protons the electric force that attracts the neutrons from two different atoms
Question 8-
in solids the internuclear force is very strong and internuclear separation is very small in comparison of liquid and gases so, due to small internuclear separation atoms holds very tightly with each other. hence, we can say that atoms moves fastest in gases, slower in liquids and rigidly connected in solids.
option a is correct. atoms moves fastest in gases, slower in liquids and rigidly connected in solids.
Question 9-
Two atoms of the same element consist of the same atomic number that is number of protons or electrons and different mass number that is number of neutrons. This variation or change in the number of neutrons in an atom gives rise to different isotopes of an element.
For example- Hydrogen ( H1), Deuterium (D1), Tritium (T3) .
option C is correct. always have the same number of electrons and protons.
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