Select all the true statements. Show The Cl− and Br− ions have the same number of electrons. When an atom gains an electron, it becomes a cation. The Fe2+ and Fe3+ ions have the same number of protons. The Cu+ and Cu2+ ions have the same number of electrons. The K+ ion is formed when a potassium atom loses one electron. Anions carry a positive charge. If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Video Transcriptthe relationship between relationship between gibbs, free energy change gives free nrg change and spontaneity. Spontaneity is when delta G. Is equal to zero. So the reaction is in equilibrium when delta G is less than zero, that means negative. So we say that reaction is spontaneous, Wendell Dodgy Greater than zero. That means positive. Non spontaneous. So here in this question we need to determine which all reactions are spontaneous. So the ones having the delta Z value as positive will be spontaneous. Or we can say favorable. So the first molecule which we have is two H 20, which is reacting to form two H two plus 02 having the delta value is equal to 4, 57 kilo jule Permal. Since it is a positive value. Therefore, we can say is a non spontaneous reaction. So we can cancel this out because we need spontaneous reactions. And the other reactions are these So, these are the other reactions which we have. Now, in this case, we can say that the b case, what we have is we have two mg plus auto giving two mg O. The value of delta T is negative. So this is going to be a spontaneous reaction. So we can take mark this. Then again, there are also value is negative. So this is a spontaneous reaction, There is a positive value. So this is non spontaneous. These non spontaneous is negative value of delta G. So this is spontaneous and f is a positive value of uh 90.8 kg joules per mole for this reaction. So F is going to be a non spontaneous reaction so we can cancel this out. So the out of A B, C, D, E and F. The reactions which are spontaneous are B, C, and E. So we can write them the actions spontaneous are B, C, and E. Thank you.
Classification and Properties of MatterIn chemistry and physics, matter is any substance that has mass and takes up space by having volume. All everyday objects that can be touched are ultimately composed of atoms, which are made up of interacting subatomic particles, and in everyday as well as scientific usage, "matter" generally includes atoms and anything made up of them, and any particles and objects that act as if they have both rest mass and volume. However it does not include massless particles such as photons, or other energy phenomena or waves such as light or sound. Matter exists in various states (known as phases) that are defined by various physical properties, such as state of matter, phase, shape, and density. The Standard Model of particle physics and the general theory of relativity describe fundamental particles and the fundamental forces acting between them that control the structure and dynamics of matter. "Pick a little, talk a little, pick a little, talk a little, Cheep cheep cheep, talk a lot, pick a little more" These lyrics
from the musical "Music Man" sum up the way science was done for centuries. The lyrics refer to a group of gossiping ladies, but the outcome was the same. The Greek and Roman philosophers debated, discussed, and sometimes even attacked one another. But the mode of discovery was talk. There was no experimentation—the idea had not yet been thought of. So science did not develop very far, and there was no reliable way to establish what was true and what was false. While it must be assumed that many more scientists, philosophers, and others studied the composition of matter after Democritus, a major leap forward in our understanding of the composition of matter took place in the 1800s with the work of the British scientist John Dalton. He started teaching school at age twelve, and was
primarily known as a teacher. In his twenties, he moved to the growing city of Manchester, where he was able to pursue some scientific studies. His work in several areas of science brought him a number of honors. When he died, over 40,000 people in Manchester marched at his funeral. Dalton studied the weights of various elements and compounds. He noticed that matter always combined in fixed ratios based on weight, or volume in the case of gases. Chemical compounds always contain the same proportion of elements by mass, regardless of amount, which provided further support for Proust's law of definite proportions. Dalton also observed that there could be more than one combination of two elements.  Dalton's Atomic Theory (1804)From his own experiments and observations, as well as the work of his peers, Dalton proposed a new theory of the atom. This later became known as Dalton's atomic theory. The general tenets of this theory are as follows:
Dalton's atomic theory has been largely accepted by the scientific community, with the exception of three changes. We now know that (1) an atom can be further subdivided, (2) all atoms of an element are not identical in mass, and (3) using nuclear fission and fusion techniques, we can create or destroy atoms by changing them into other atoms. Summary
Review
What Cannot be explained by Dalton's atomic theory?Dalton's atomic theory couldn't explain gaseous volumes, because as per his view, different elements have different mass but this isn't true. This is explained by Gay lussac's law. This is one of the major limitations of Dalton's atomic theory.
Which one is not Dalton's theory?Correct Answer: (c) Atoms of the same elements can combine in only one ratio to produce more than one compound. Explanation: Atoms of the same elements can combine in only one ratio to produce more than one compound is not a postulate of Dalton's atomic theory.
Why are two of Dalton's theory were incorrect?Part two of Dalton's theory had to be modified after mass spectrometry experiments demonstrated that atoms of the same element can have different masses because the number of neutrons can vary for different isotopes of the same element.
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Which chemical reactions are not possible according to daltons atomic theory?
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