6.5 Main Group
... Inert Pair effect: Although the ionization energy decreases down the group with increasing atomic radius (heavier elements form cations more readily), the heavier elements also show greater stability of M+ (ns2np0). One possible explanation is that the ns2 electrons are harder to remove due to a rel ...
... Inert Pair effect: Although the ionization energy decreases down the group with increasing atomic radius (heavier elements form cations more readily), the heavier elements also show greater stability of M+ (ns2np0). One possible explanation is that the ns2 electrons are harder to remove due to a rel ...
Atom - Images
... (getting smaller) because the positive charge is greater than the smaller negative charges and pulls them in toward the nucleus. • More electrons than protons = radii increases (getting larger) because the electrons are farther away from the positive nucleus. • The Natural state of atoms has protons ...
... (getting smaller) because the positive charge is greater than the smaller negative charges and pulls them in toward the nucleus. • More electrons than protons = radii increases (getting larger) because the electrons are farther away from the positive nucleus. • The Natural state of atoms has protons ...
Subatomic Particles
... mass of a proton and neutron that it does not contribute to the mass of the atom • We base all our atomic masses on the mass of carbon-12. The 12 stands for its atomic mass of 12.0000g/mol or amu (atomic mass unit) • 1 amu = 1.67 x 10-24g or the same mass as a neutron and proton ...
... mass of a proton and neutron that it does not contribute to the mass of the atom • We base all our atomic masses on the mass of carbon-12. The 12 stands for its atomic mass of 12.0000g/mol or amu (atomic mass unit) • 1 amu = 1.67 x 10-24g or the same mass as a neutron and proton ...
Atoms
... 4. In chemical reactions, atoms are combined, separated, or rearranged (No atoms are created or destroyed) So at this point, we believe that an atom is like a small solid ball of matter that cannot be split up ...
... 4. In chemical reactions, atoms are combined, separated, or rearranged (No atoms are created or destroyed) So at this point, we believe that an atom is like a small solid ball of matter that cannot be split up ...
WHAT IS THE BASIC STRUCTURE OF THE ATOM
... for the same element. 2. Atoms of the same element that have the same umber of protons, but different neutrons are called ____________________. 3. Despite this, isotopes still have very similar chemical properties. 4. To make it easier to identify each of the various isotopes of an element, chemists ...
... for the same element. 2. Atoms of the same element that have the same umber of protons, but different neutrons are called ____________________. 3. Despite this, isotopes still have very similar chemical properties. 4. To make it easier to identify each of the various isotopes of an element, chemists ...
File
... behaviour of atoms and their chemical and physical properties in forming new compounds. ...
... behaviour of atoms and their chemical and physical properties in forming new compounds. ...
Chapter 2 - Chemistry
... Deductions from Dalton s Atomic Theory Explains: 1.) difference between element and compound 2.) Law of Mass Conservation - states that total mass remains constant during a chemical reaction 3.) Law of Definite Proportions - compound is type of matter containing atoms of two or more elements is defi ...
... Deductions from Dalton s Atomic Theory Explains: 1.) difference between element and compound 2.) Law of Mass Conservation - states that total mass remains constant during a chemical reaction 3.) Law of Definite Proportions - compound is type of matter containing atoms of two or more elements is defi ...
Activity 2 - SSS Chemistry
... to lower orbits, they give off the energy in the form of ____________________________. The amount of energy released in each jump corresponds to a certain _________________ of light. The pattern of different colours of light given off is called the ________________ for that element and can be seen t ...
... to lower orbits, they give off the energy in the form of ____________________________. The amount of energy released in each jump corresponds to a certain _________________ of light. The pattern of different colours of light given off is called the ________________ for that element and can be seen t ...
Early Atomic Theories
... Match the Three Fundamental Laws to their descriptions. (4 marks) I) The Law of __________________________ The total mass of reactants and products are equal in a closed system because matter cannot be created or destroyed. E.g. The mass of all of the contents in a reaction is constant in a rea ...
... Match the Three Fundamental Laws to their descriptions. (4 marks) I) The Law of __________________________ The total mass of reactants and products are equal in a closed system because matter cannot be created or destroyed. E.g. The mass of all of the contents in a reaction is constant in a rea ...
Atomic Theory - World of Teaching
... Change in the nucleus of an atom Loss of an Alpha, Beta, or ...
... Change in the nucleus of an atom Loss of an Alpha, Beta, or ...
Atomic Structure Notes Packet
... John Dalton (1766-1844): used Democritus’s ideas and proposed the first atomic theory in 1803 based on experimentation, which included the following ideas: All ____________ consist of tiny indivisible particles called atoms. Atoms of the same element are ____________, different from those of any oth ...
... John Dalton (1766-1844): used Democritus’s ideas and proposed the first atomic theory in 1803 based on experimentation, which included the following ideas: All ____________ consist of tiny indivisible particles called atoms. Atoms of the same element are ____________, different from those of any oth ...
Chemistry A - Montgomery County Public Schools
... describe the characteristics of protons, neutrons and electrons in terms of location, charge and mass. illustrate the structure of the atom by using the Bohr model, including the charge, relative mass and location of the sub-atomic particles. use atomic mass, atomic number, and charge to ident ...
... describe the characteristics of protons, neutrons and electrons in terms of location, charge and mass. illustrate the structure of the atom by using the Bohr model, including the charge, relative mass and location of the sub-atomic particles. use atomic mass, atomic number, and charge to ident ...
atom
... evidence for energy levels • Explain how the electron cloud model represents the behavior and locations of electron in atoms • Distinguish the ground state from excited states of an atom based on electron configurations ...
... evidence for energy levels • Explain how the electron cloud model represents the behavior and locations of electron in atoms • Distinguish the ground state from excited states of an atom based on electron configurations ...
Atomic Theory Notes
... Why aren’t electrons accounted for in the calculation of the atomic mass? • Electrons are small! • It takes almost 2,000 electrons to equal the mass of one proton or neutron • Electrons are assumed to have a mass of 0 amu ...
... Why aren’t electrons accounted for in the calculation of the atomic mass? • Electrons are small! • It takes almost 2,000 electrons to equal the mass of one proton or neutron • Electrons are assumed to have a mass of 0 amu ...
Atoms, Ions, and the Periodic Table
... Questions about Rutherford’s experiment: I. If gold atoms were solid spheres stacked together with no space between them, what would you expect would happen to particles shot at them. Explain your reasoning. The He nucleus would have been deflected straight back because it would have a much larger, ...
... Questions about Rutherford’s experiment: I. If gold atoms were solid spheres stacked together with no space between them, what would you expect would happen to particles shot at them. Explain your reasoning. The He nucleus would have been deflected straight back because it would have a much larger, ...
Chapter 4 Worksheet 1
... move around the nucleus of an atom I. An atom that has lost or gained electrons ...
... move around the nucleus of an atom I. An atom that has lost or gained electrons ...
Matter
... elements—air, earth, fire, and water. Not until much later did scientists begin to realize that matter was composed of many different elements. ...
... elements—air, earth, fire, and water. Not until much later did scientists begin to realize that matter was composed of many different elements. ...
Atoms, Molecules and Ions
... element combine, a given compound always has the same number of elements and atoms ...
... element combine, a given compound always has the same number of elements and atoms ...
Chemistry - Beck-Shop
... Table is shown in the appendix on page 401 and explained, much more fully, in chapter 9.) ឣ All matter is composed of extremely small particles (atoms). About 100 years ago, the accepted model for atoms included the assumptions that (i) atoms were tiny particles, which could not be divided further n ...
... Table is shown in the appendix on page 401 and explained, much more fully, in chapter 9.) ឣ All matter is composed of extremely small particles (atoms). About 100 years ago, the accepted model for atoms included the assumptions that (i) atoms were tiny particles, which could not be divided further n ...
1 - Intro to Electrochemistry
... Its oxidation number _____________________ (more on this later) Example: Cu(s) Cu2+ + 2 eReduction During reduction, a substance ____________ electrons during a chemical reaction The oxidation number of the substance being reduced is ______________ in the ...
... Its oxidation number _____________________ (more on this later) Example: Cu(s) Cu2+ + 2 eReduction During reduction, a substance ____________ electrons during a chemical reaction The oxidation number of the substance being reduced is ______________ in the ...
