How the idea of atoms along with the idea of elements evolved? (e.g. timeline, graphic organizer, etc.) Of the historical development of the atom, paralleled with the development of the concept of chemical elements.

Q: m atom c

A: Atom is the small particle of matter and made up of three fundamental particles which are known as…

Q: A primary goal of medievel alchemists was to turn base metals in gold. Typically they worked with…

A: Mass number = number of neutrons + number of protons Atomic number = number of protons

Q: Which of the following sentences are correct? 1. Atomic mass is the weighted average of the masses…

A: The mass number or atomic mass can be estimated by its various isotopes present in nature and their…

Q: Three fundamental particles of the atom are the m . At the center of each atom lies the atomic. ed…

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Q: In the following drawing, the green spheres represent atoms of a certain element. The purple spheres…

A: The left side of the reaction has one green element and two blue elements because they are of two…

Q: Symbol Protons Neutrons Electrons Mass # Charge 8. 10 8. 8. 18 9. 10 -1 10 10 10 00

A: Atomic number is equal to no. Of protons  No. Of protons are equal to no. Of electrons in neutral…

Q: 6. Students in a chemistry course were asked the following question on unit exam: "Draw a diagram…

A: 1. If we consider 1 circle as 1 atom then both A and B diagrams are correct, where Diagram A…

Q: How are the concepts of an atom and an element related? What causes elements to differ?

A: A particular atom will have the same number of protons and electrons and most atoms have at least as…

Q: The element cubidium (Rb) has two isotopes. 85 Rb. has an Otomic maS3 Of 84.911789 87 Rb has an…

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Q: HOW THE EARLY CONCEPTS OF ATOM WERE DEVELOPED BY THE GREEK FOUNDING FATHERS. AVOID PLAGIARISM

A: The ancient Greek philosophers were among the first to develop the concept of atoms, the smallest…

Q: ☆回 G Add-ons Help Last edit was 4 minutes ago в I U A 三|ニ Calibri 11 Q4) consider the element Xy…

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Q: Atom A Atom B Atom C Atom D Number of protons 79 80 80 79 Number of neutrons 118 120 118 120 Number…

A: Given A,B,C and D  element with electron ,potron and neutron.

Q: Which of the following pairs can be used to illustrate the law of multiple proportions? O H₂O and…

A: The law of multiple proportions describe that two elements are connected to form more than one…

Q: Back on planet Earth, elements have different isotopic distributions. The atom Chlorine ( Cl ) has…

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Q: State the laws of definite proportions and multipleproportions. Illustrate each with an example.

A: Law of definite proportions, statement that every chemical compound contains fixed and constant…

Q: Which of Dalton's five postulates are a consequence of the law of definite proportions?

A: The law of definite proportions states that a given compound always contains its component elements…

Q: You are asked to determine the composition of a gas. There are three componets with three different…

A: Atomic number (Z) :-  The number of protons inside the nucleus of an atom is called atomic number.…

Q: After Rutherford discovered the nucleus, which model of the atom is thought to be true? * O Protons,…

A: Rutherford discovered the nucleus by the alpha scattering experiment.

Q: Tony stark is trying to make new element, and smashes together an atom of helium-4 and an atom of…

A: When an atom is smashed into another atom, the reaction is termed a nuclear fusion reaction. Such…

Q: ŽLi 10. Using the mass data expressed in grams in the table on calculate how many times more massive…

A: protons and electrons are elementary particle of atoms .

Q: An unknown element X has the following isotopes: 1ºX (20.00% abundant, atomic mass = atomic mass =…

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Q: Is the statement inconsistent with Dalton’s atomic theory as it was originally stated? Why? The…

A: Yes,the statement that formation of a compound often involves the destruction of of one or more…

Q: Why do atoms combine chemically with other atoms?

A: To explain: Why do atoms combine chemically with other atoms?

Q: Complete the chart below. Some numbers may be used i Element Symbol Atomic Iron #7 Xe 10 :: Ne :: Fe…

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Q: An unknown element X has the following isotopes: ²⁵X (80.50% abundant, mass = 25.03 amu) and ²⁷X…

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Q: Naturally occurring gallium has two isotopes. If you have a pile with ing to the Periodic Table, the…

A: There are two questions. Both the question is based on mole concept. Here, we have to have a clear…

Q: Which of the following is true?    a) There are only protons in the nucleus of the atom.  B) It…

A: Which of the following statement is true ?

Q: "the atom with 38 protons and 49 neutrons"

A: Given,        Number of protons = 38         Number of neutrons = 49  Assume an atom is 'X'

Q: In the following images, the white spheres represent hydrogen atoms and the red spheres represent…

A: An element contains only one form of the atoms. A compound is formed by combining two or more types…

Q: 1.) How do different atomic theories differ from Daltons atomic theory? 2.) Why did Rutherford…

A: Ans 1) there are total 5 atomic theories :- Dalton's atomic theory :- plum pudding model by JJ…

Q: In chemistry, the atom is the fundamental building block of chemical structures. Unique combinations…

A: Atom is a neutral i.e total positive charge is equal to total negative charge.  In an atom , atomic…

Q: A Chemistry student at Agora is calculating the average atomic mass of Potassium using the following…

A: We are given the atomic mass and relative abundance of the two isotopes of potassium(K). We have to…

Q: ntribution of James Chadwick to [ Choose ] velopment of the atomic model

A: Atom is made up of very tiny particles which is indestructible says in Dalton's atomic theory .

Q: g and a small airplane has a mass of 5000. kg. An aluminum atom has a mass of 4.48 × 10 Use this…

A: The mass of 1 aluminum atom is .The mass of an airplane is 5000. kg.To find the mass of 1 mole of…

Q: An element has two naturally occurring isotopes. Isotope 1 has a mass of 190.9606 amu and a relative…

A: Since,    Average Atomic mass=Σmass of Isotope×% of Isotope100

Q: nucleus O electrons electron cloud.

A: We know that elements can form isotopes.

Q: Q.3 A neutral atom has a mass number of 80 and has 45 neutrons. Write its complete symbol. Q.4 An…

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Q: The existence of isotopes violates one of the original ideas of Dalton’s atomic theory. Which one?

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Q: Which of the following statement is not correct? a) Most of the known elements are metals. b)…

A: Elements are arranged in periodic table as per their exhibiting properties and electronic…

Q: Verdana 16 B IUA CO O E E 5 LLI4 I 3IC 2. A Think About It Each of the atomic models shown…

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Q: description An element in Period 1 and Group 34. A nonmetal in Group 6A A noble gas with a higher…

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Q: What was the theory of elements believed by ancient philosophers? What do you think led scientists…

A: In 1808 the great philosopher john Dalton gave the atomic theory. According to them atom is…

Q: Define atom. List the subatomic particles, and describe their relative masses, charges, and…

A: Chemistry is the branch of science concerned with the composition, structure, properties, and…

Q: A Chemistry student at Agora is calculating the average atomic mass of Potassium using the following…

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Q: What is the chemical formula for a molecular model with 2 nitrogen atoms and 4 hydrogen atoms? Also…

A: a) Since the model is having 1 black and 4 white balls. Hence it is having 1 carbon i.e C and 4…

Q: Of the follOV ng statements Is correct about the periodic law? Properties of elements are periodic…

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