Periodic_Table
... Some Important Nonmetals • Carbon – important element for making up living organisms • Noble Gases – group 18 – very nonreactive. Have full outer shells. ...
... Some Important Nonmetals • Carbon – important element for making up living organisms • Noble Gases – group 18 – very nonreactive. Have full outer shells. ...
Chapter 4 Study Guide Section 4.1 What was Dalton`s Atomic
... 2. Which element’s configuration ends with 4p3? Section 4.5 1. As you move from left to right across the periodic table, the atomic number by one. ...
... 2. Which element’s configuration ends with 4p3? Section 4.5 1. As you move from left to right across the periodic table, the atomic number by one. ...
Using your periodic table (9/30-10/6) File
... 1.Ions are a result of electrons being ________. 2. A positive charged element has ______ electrons & is called a ______. 3. A negative charged element has _____ electrons & is called a _____. 4. Draw the Bohr models of Na + Cl NaCl and show how electrons are transferred. Which part of the reactio ...
... 1.Ions are a result of electrons being ________. 2. A positive charged element has ______ electrons & is called a ______. 3. A negative charged element has _____ electrons & is called a _____. 4. Draw the Bohr models of Na + Cl NaCl and show how electrons are transferred. Which part of the reactio ...
Chapter 4
... Metals: solid (except mercury), shiny, conductors of electricity and heat, ductile, malleable ...
... Metals: solid (except mercury), shiny, conductors of electricity and heat, ductile, malleable ...
19. Define the law of multiple proportions. Elements form
... 19. Define the law of multiple proportions. Elements form compounds in simple whole number ratios 20. What do isotopes of the same element have in common and what is different? Isotopes have the same number of protons, electrons and atomic number Isotopes have a different mass number and number of n ...
... 19. Define the law of multiple proportions. Elements form compounds in simple whole number ratios 20. What do isotopes of the same element have in common and what is different? Isotopes have the same number of protons, electrons and atomic number Isotopes have a different mass number and number of n ...
Worksheet - Models of the Atom - Teacher
... 7. On the back of this sheet, construct a timeline of the models of the atom. Include the names of the six models and important discoveries that led to each. (See Changing Atomic Models Notes.) 8. Draw pictures representing the models of Thomson and Rutherford. ...
... 7. On the back of this sheet, construct a timeline of the models of the atom. Include the names of the six models and important discoveries that led to each. (See Changing Atomic Models Notes.) 8. Draw pictures representing the models of Thomson and Rutherford. ...
Elements - Heartland
... Only 1 in 8000 alpha particles is scattered. Scattering occurs when an alpha particle encounters a gold nuclei. A nucleus is very small and contains both the protons and the neutrons. Thus, it contains almost all of the mass of an atom. This very dense center is surrounded by the electron cloud, whi ...
... Only 1 in 8000 alpha particles is scattered. Scattering occurs when an alpha particle encounters a gold nuclei. A nucleus is very small and contains both the protons and the neutrons. Thus, it contains almost all of the mass of an atom. This very dense center is surrounded by the electron cloud, whi ...
Chapter 4 Atomic Structure I. History of the Atom A. Democritus (400
... 1. Ground state: All the electrons in an atom have the lowest possible energy a. Stable 2. Excited state: An electron moves to an orbital of higher energy a. Less stable Chapter 5 Periodic Table I. Organizing the elements A. Mendeleev’s Periodic Table 1. Arranged in rows by increasing atomic mass 2. ...
... 1. Ground state: All the electrons in an atom have the lowest possible energy a. Stable 2. Excited state: An electron moves to an orbital of higher energy a. Less stable Chapter 5 Periodic Table I. Organizing the elements A. Mendeleev’s Periodic Table 1. Arranged in rows by increasing atomic mass 2. ...
Note taker: ATOMS AND THE PERIODIC TABLE
... •Atoms are composed of a positively charged nucleus surrounded by an electron cloud. –________________ (99% of atom’s mass): uncharged neutrons and positively charged protons. –______________________________: negatively charged electrons in constant motion creating a ...
... •Atoms are composed of a positively charged nucleus surrounded by an electron cloud. –________________ (99% of atom’s mass): uncharged neutrons and positively charged protons. –______________________________: negatively charged electrons in constant motion creating a ...
effective nuclear charge
... atom or ion measure of attraction of atom for the added e energy is released when e- added the more negative the EA, the greater the attraction of the atom for an e ex: Cl(g) + e- Cl-(g) ΔE= -349kJ/mol ...
... atom or ion measure of attraction of atom for the added e energy is released when e- added the more negative the EA, the greater the attraction of the atom for an e ex: Cl(g) + e- Cl-(g) ΔE= -349kJ/mol ...
Atoms_and_Elements
... • Elements are arranged in order of atomic number. • Elements with similar properties are in the same column • Elements on the left side of the table, except hydrogen, are metals • Elements on far right are nonmetals. • Metalloids have properties of both metals and nonmetals. ...
... • Elements are arranged in order of atomic number. • Elements with similar properties are in the same column • Elements on the left side of the table, except hydrogen, are metals • Elements on far right are nonmetals. • Metalloids have properties of both metals and nonmetals. ...
Chemistry and elements 1. The rows of the periodic table are called
... d. All of the above 12. The atomic mass of an element is: a. Protons + Neutrons b. Protons + Electrons c. Neutrons + Electrons d. Just protons 15. Inside the atom’s nucleus are the: a. Protons and electrons b. Neutrons and electrons c. Protons and Neutrons d. Just the electrons 18. O is the atomic s ...
... d. All of the above 12. The atomic mass of an element is: a. Protons + Neutrons b. Protons + Electrons c. Neutrons + Electrons d. Just protons 15. Inside the atom’s nucleus are the: a. Protons and electrons b. Neutrons and electrons c. Protons and Neutrons d. Just the electrons 18. O is the atomic s ...
Guided Notes: The Atom
... Millikan-oil drop experiment; found quantity of charge on an _________: carries exactly _____________ of charge, and mass is 1/1840 the mass of a proton Rutherford-1910; __________________ experiment; model of the atom- discovered nucleus and that the atom is mostly empty space ...
... Millikan-oil drop experiment; found quantity of charge on an _________: carries exactly _____________ of charge, and mass is 1/1840 the mass of a proton Rutherford-1910; __________________ experiment; model of the atom- discovered nucleus and that the atom is mostly empty space ...
chapter_17_atomic_structure_review
... passed through.(like charges repel) • Rutherford discovered the nucleus as a result of his experiment ...
... passed through.(like charges repel) • Rutherford discovered the nucleus as a result of his experiment ...
Isotopes and Shell Diagrams
... pudding model because it displayed the electrons going around the nucleus in an orbit and not in just a big blob. ...
... pudding model because it displayed the electrons going around the nucleus in an orbit and not in just a big blob. ...
Atomic Number
... -Elements within the same group have similar properties EX. Au, Ag, Cu -Each horizontal row is called a ____________________ -Properties of the elements gradually change when you move through a period -Elements get smaller when you move from _________________ to ______________. ...
... -Elements within the same group have similar properties EX. Au, Ag, Cu -Each horizontal row is called a ____________________ -Properties of the elements gradually change when you move through a period -Elements get smaller when you move from _________________ to ______________. ...
Chemistry Review Answers
... Example: C always represents Carbon, Na always represents Sodium, Fe always represents Iron Valence Electrons- An electron in an outer shell of an atom that can participate in forming chemical bonds with other need 8 for stability. Example: Nobles Gases have all eight and are reluctant to bond Ions- ...
... Example: C always represents Carbon, Na always represents Sodium, Fe always represents Iron Valence Electrons- An electron in an outer shell of an atom that can participate in forming chemical bonds with other need 8 for stability. Example: Nobles Gases have all eight and are reluctant to bond Ions- ...
File - Cynthia Campbell
... characteristics are determined, in large part, by the number of electrons in the outermost shell of its atoms. As with the number of protons, the number of electrons increases by one as you move across the table from left to right, top to bottom. Atoms of elements in the left-hand column have one el ...
... characteristics are determined, in large part, by the number of electrons in the outermost shell of its atoms. As with the number of protons, the number of electrons increases by one as you move across the table from left to right, top to bottom. Atoms of elements in the left-hand column have one el ...
The Periodic Table of Elements
... • The elements in the 2nd column are called the alkaline earth metals and each has 2 valence electrons. • The elements in the 7th column are called the halogens and each has 7 valence electrons. • Finally, the elements in the 8th column are known as the inert or noble gases. They have a full octet o ...
... • The elements in the 2nd column are called the alkaline earth metals and each has 2 valence electrons. • The elements in the 7th column are called the halogens and each has 7 valence electrons. • Finally, the elements in the 8th column are known as the inert or noble gases. They have a full octet o ...
Notes - Organization of Matter
... • Compounds are pure substances that are composed of two or more atoms that are chemically combined • Compounds can only be changed into simpler substances called elements by chemical changes ...
... • Compounds are pure substances that are composed of two or more atoms that are chemically combined • Compounds can only be changed into simpler substances called elements by chemical changes ...
Modern Atomic Theory - hrsbstaff.ednet.ns.ca
... •All elements are composed of atoms. •All atoms of the same element are identical – in particular they have the same mass. •The atoms of one kind of element are different from the atoms of all other elements - in particular the atoms of one element have a different mass than those of other elements. ...
... •All elements are composed of atoms. •All atoms of the same element are identical – in particular they have the same mass. •The atoms of one kind of element are different from the atoms of all other elements - in particular the atoms of one element have a different mass than those of other elements. ...