Atomic Theory & Scientists 1. Write the letter of each sentence that is true about Dalton's atomic theory. a. All elements are composed of tiny, indivisible particles called atoms. b. An element is composed of several types of atoms. c. Atoms of different elements can physically mix together, or can chemically combine in simple, whole-number ratios to form compounds. d. Chemical reactions occur when atoms are separated, joined or rearranged; however, atoms of one element are never changed into atoms of another element by a chemical reaction.

Q: In 1808, John Dalton proposed a series of statements regarding the atom that became known as…

A: Given, Five statements of Dalton's atomic theory is given -     Required,                   Among…

Q: Some chlorine atoms have an atomic mass of 37, while others have an atomic mass of 35. What is the…

A: The mass number of an atom is the sum of proton and neutrons present in that atom.  Mass number =…

Q: a. The atom can be broken down into smaller parts. What are the smaller parts? b. How are atoms of…

A: Since the question being asked has more than 3 subparts, we’ll answer the first 3. Please repost the…

Q: 1. Which of the following substances is an element? А. Ice В. Coal С. Sand D. Iron 2. Which of the…

A: The structure of an atom, as studied by scientist such as J. J. Thomson, Ernest Rutherford and Neils…

Q: D Only one of the following atomic notations is written correctly. a. 3478Se b. 2⁹90 73 328e d.…

A: Atomic number of an element is equal to number of protons.Mass number of an element or an atom is…

Q: As we saw in the previous problem, lithium has two naturally occurring isotopes: Li-6 (natural…

A: The mass which is closest to the atomic mass of Li has to be given.

Q: 12. For each of the following elements, use the tables on the inside cover of the book to give the…

A: An atom is made up of a nucleus and electrons. Nucleus consists protons and neutrons. Protons are…

Q: 1. Which of the following is not one of Dalton's laws? a) Atoms are indestructible. b) Atoms of the…

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Q: 1. How many calories are released when 100. g of steam condenses? The heat of condensation for water…

A: Given: Mass of water = 100 g The heat of condensation for water = 540 Cal/g

Q: What makes up most of the volume of an atom?A. protonsB. neutronsC. electronsD. empty space

A: The smallest particle of an element is called an atom. Atoms of different elements are of different…

Q: Which of the following is False?a. An element is defined by its atomic number.b. Ninety-two elements…

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Q: 1.Which of the following elements is not an alkali metal? a. Li b. Na c. K d. P

A: Note : As per our guidelines , we are supposed to answer first question please resubmit the other…

Q: Which statements are consistent with Dalton’s atomic theory as it was originally stated? Why?a.…

A: Dalton's atomic theory was the first complete attempt to describe all matter in terms of atoms and…

Q: . Suppose you have a sample of sodium weighing 14.50 g. What mass of potassium would you need to…

A: Atomic mass of sodium=23 Atomic mass of potassium=39 Number of mole=given mass/molar mass So,…

Q: A certain element exists as three different isotopes, 29.1% of all the isotopes have a mass of 75.23…

A: The average atomic mass can be calculated by using Following formula - AAM = (Mass of 1st isotope×%…

Q: We are going to make a simple approximation of the number of atoms in the universe. 1. Assume all…

A: We know, molar mass of Hydrogen atom = 1.008 gram/mole  1 mole hydrogen= 6.022×1023 hydrogen atoms.…

Q: 13. How do humans use subatomic particles to the benefit of society? Provide an example and explain…

A: Subatomic particles are defined as a group of smallest particle which defined whole atom.

Q: 5. List the three subatomic particles and their properties.

A: To find: The list of three subatomic particles and their properties.

Q: olecule in units

A: Dear student I have given answer to your question in the image format.

Q: Why do atoms combine chemically with other atoms?

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

Q: Use Dalton's atomic theory to account for each of the following. a.the law of conservation of mass…

A: Use Dalton's atomic theory to account for each of the following. a.the law of conservation of mass…

Q: # How many silver atoms are there in 3.86 g of silver, calculate the number of atoms in each sample…

A: As per our guidelines, we can only solve the first three parts of the question. Please resubmit the…

Q: Determine the number of protons and the number of electrons in each ion.a. Al3 +               b.…

A: The electronic configuration for a given atom can be defined as the representation of the…

Q: Fill in the blanks using the following terms: atom, element, ion, isotope, molecule, compound. a. A…

A: The simplest form of a pure substance that can neither be broken down nor can be composed from…

Q: 18 13 14 15 16 17 He Li Be B. Ne No Mg Al Si P. K Ca Ga Ge As Se Br CI Ar K Kr

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Please help me with questions 1 and 2 1. What is an example of matter? A. Light B. None of the…

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Q: Which statement about atoms is correct? A. Atoms are not composed of smaller particles. OB. Each…

A: In atom, there is nucleus (protons and neutrons) and electrons are revolving around the nucleus.

Q: MCQ 1: The smallest particle of an element which can take part in any chemical change is known as…

A: In any chemical reaction or chemical change atoms participate in a chemical reaction.  Since nucleus…

Q: From the results of his gold foil experiment, Rutherford concluded that   Group of answer choices A.…

A: From the results of his gold foil experiment, Rutherford concluded that atoms are composed of a…

Q: Locate each element in the periodic table and classify it as a metal, nonmetal, or metalloid. a.…

A: Titanium belongs to group 4 and is present in d block. It is a metal. Chlorine belongs to group 17…

Q: postulate in the atomic theory did the discovery of isotopes contradict

A: The postulates of atomic theory are shown below: Matter is made up of small indivisible particle is…

Q: 5. Which elements are halogen elements? A. Fluorine, Chlorine, Bromine B. Calcium, Strontium, Barium…

A: We would use periodic table properties to answer these questions.    Note : As you have uploaded…

Q: Which one of the following is the chemical symbol of an atom with 17 protons and 20 neutrons?

A:

Q: Which of the following statements is false? a. The proton and neutron are primarily responsible for…

A: we have to select the false statement

Q: wwww TTTTT The atom is a solid sphere that was allowed to participate in chemical reactions. 10.…

A: “Since you have asked multiple questions, we will solve the first question for you. If youwant any…

Q: Which one of the following statements regarding subatomic particles is true? a. Electrons have a…

A: An atom consists of three sub-atomic particles namely, electrons, protons, and neutrons. Electrons…

Q: 22. Elements that have metallic and non-metallic properties are called a. metalloids…

A: The question is asking to identify the term for elements that exhibit both metallic and non-metallic…

Q: 2. Which of the following best describes an element? a. A neutral substance consisting of a cation…

A: Element is a substance which consists only of atoms having same atomic number and hence same…

Q: 1. Write the number and name (if any) of the group (family) to which each of the following elements…

A: In the periodic table,  The vertical columns are called groups. There are 18 groups in total in the…

Q: Which of the following statements best describes the elements in Group 8A (18) of the periodic…

A: The elements in Group 8A (18) are : Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe) and…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.