- Catalyst
... Isotopes of an element differ in the number of neutrons, and thus in mass number, but not in chemical behavior (much). A sample of the element is treated as though its atoms have an average mass. 4. Compounds are formed by the chemical combination of two or more elements in specific ratios, as origi ...
... Isotopes of an element differ in the number of neutrons, and thus in mass number, but not in chemical behavior (much). A sample of the element is treated as though its atoms have an average mass. 4. Compounds are formed by the chemical combination of two or more elements in specific ratios, as origi ...
Chapter 3 Section 2 Notes
... number of protons and electrons increases by one Elements in the same period DO NOT have similar properties; in fact, they change greatly across the row The first element in a period is always an extremely active solid. The last element in a period, is always an inactive gas. ...
... number of protons and electrons increases by one Elements in the same period DO NOT have similar properties; in fact, they change greatly across the row The first element in a period is always an extremely active solid. The last element in a period, is always an inactive gas. ...
The Periodic Table
... Aluminum is a representative element. Copper is a transition metal. Na is an _______________________ Mg is an _______________________ F is a ________________________ Ne is a ______________________ Ag is a ______________________ ...
... Aluminum is a representative element. Copper is a transition metal. Na is an _______________________ Mg is an _______________________ F is a ________________________ Ne is a ______________________ Ag is a ______________________ ...
Ionization Energy
... in the nucleus. The periodic table is also arranged in groups which are vertical columns of elements, and periods, which are the horizontal rows of elements. Each element has ionization energy, which is the energy it takes for an electron to be removed from the atom. The scatter plot above shows the ...
... in the nucleus. The periodic table is also arranged in groups which are vertical columns of elements, and periods, which are the horizontal rows of elements. Each element has ionization energy, which is the energy it takes for an electron to be removed from the atom. The scatter plot above shows the ...
Historical development of the nature of matter Democritus (~460
... Valence electrons ⇒ those electrons in the outermost shell (highest value of n) of an atom ♦ For representative elements this is the same as its group number ♦ For transition metals it is more complicated (not discussed until Chem 422) Octet Rule⇒ atoms tend to ionize or combine such that they achie ...
... Valence electrons ⇒ those electrons in the outermost shell (highest value of n) of an atom ♦ For representative elements this is the same as its group number ♦ For transition metals it is more complicated (not discussed until Chem 422) Octet Rule⇒ atoms tend to ionize or combine such that they achie ...
10.2 – District 2: Periodic Table and Trends Key Points Notes The
... Group Number Common Properties Alkali Metals Transition Metals Alkaline Earth Metals Halogens Noble Gases List the common properties of metals: ...
... Group Number Common Properties Alkali Metals Transition Metals Alkaline Earth Metals Halogens Noble Gases List the common properties of metals: ...
7.1 The Periodic Table
... • Physical properties include color, texture, density, brittleness, and state (solid, liquid, or gas). • Melting point, boiling point, and specific heat are also physical properties. ...
... • Physical properties include color, texture, density, brittleness, and state (solid, liquid, or gas). • Melting point, boiling point, and specific heat are also physical properties. ...
Give the name and symbol for the element found in
... stretching and twisting, and are solids at room temperature (b) Nonmetals Physical properties of nonmetals include: no luster, poor conductors, low densities, low melting points, low boiling points, and they may be solid, liquid, or gas at room temperature. (c) Metalloids or semimetals Metalloids ha ...
... stretching and twisting, and are solids at room temperature (b) Nonmetals Physical properties of nonmetals include: no luster, poor conductors, low densities, low melting points, low boiling points, and they may be solid, liquid, or gas at room temperature. (c) Metalloids or semimetals Metalloids ha ...
File
... o The metals in groups 3-12 are called ________________________: elements that form a bridge between the elements in the left and right sides of the table. One property is their ability to form compounds with _________________________ Iron or Chromium is added for green colored glass ...
... o The metals in groups 3-12 are called ________________________: elements that form a bridge between the elements in the left and right sides of the table. One property is their ability to form compounds with _________________________ Iron or Chromium is added for green colored glass ...
Periodicity
... • is arranged in rows (across) in order of increasing energy levels of valence electrons (called periods). The period number represents the energy level for that row. • is arranged in columns (down) in order of similar orbitals for the valence electrons (called groups). • The elements are represente ...
... • is arranged in rows (across) in order of increasing energy levels of valence electrons (called periods). The period number represents the energy level for that row. • is arranged in columns (down) in order of similar orbitals for the valence electrons (called groups). • The elements are represente ...
Oxygen - Hingham
... Five electrons in the outermost energy level. As (5 Valence Electrons) Sb They physical and chemical properties that are strikingly Bi different. N and P make up fertilizer. ...
... Five electrons in the outermost energy level. As (5 Valence Electrons) Sb They physical and chemical properties that are strikingly Bi different. N and P make up fertilizer. ...
The Periodic Table
... Each group has characteristic properties that are directly related to electron configuration & especially the number of valence electrons ...
... Each group has characteristic properties that are directly related to electron configuration & especially the number of valence electrons ...
The Periodic Table
... increasing atomic numbers. By doing this he saw fewer irregularities Moseley’s periodic table is what is used today. ...
... increasing atomic numbers. By doing this he saw fewer irregularities Moseley’s periodic table is what is used today. ...
Atomic Number and Mass
... The number of protons in the nucleus. It is the number of protons that identifies the element. ...
... The number of protons in the nucleus. It is the number of protons that identifies the element. ...
Elements of the Periodic Table
... but its high cost has kept it from becoming commercially viable allowing it to compete with nitrous oxide. It is 44% more potent as an anesthetic than nitrous oxide. A very common noble gas, as a matter of fact the second most abundant element in the universe is Helium. Helium represents about 24% o ...
... but its high cost has kept it from becoming commercially viable allowing it to compete with nitrous oxide. It is 44% more potent as an anesthetic than nitrous oxide. A very common noble gas, as a matter of fact the second most abundant element in the universe is Helium. Helium represents about 24% o ...
Chapter Test B
... atomic radius ion Group 1, Period 7, s block All three groups of elements are metals. Alkali and alkaline-earth metals are so reactive that they are not found in nature as free elements. Transition elements are generally less reactive. Some are so unreactive that they do not form compounds easily an ...
... atomic radius ion Group 1, Period 7, s block All three groups of elements are metals. Alkali and alkaline-earth metals are so reactive that they are not found in nature as free elements. Transition elements are generally less reactive. Some are so unreactive that they do not form compounds easily an ...
Learning Targets
... 5. Draw a Bohr Model of an atom, given its atomic notation 6. Identify the number of valence electrons from a diagram or Bohr Model B. Isotopes and Relative Atomic Mass 1. Explain and illustrate the concept of isotopes 2. Explain the concept of relative atomic mass 3. Calculate the atomic mass of an ...
... 5. Draw a Bohr Model of an atom, given its atomic notation 6. Identify the number of valence electrons from a diagram or Bohr Model B. Isotopes and Relative Atomic Mass 1. Explain and illustrate the concept of isotopes 2. Explain the concept of relative atomic mass 3. Calculate the atomic mass of an ...
How Atoms Differ (Section 4.3) part 1
... nuclear charge, so the atom is neutral? • So how many electrons • Atomic number = number of protons = number of electrons • How many electons are in an atom of: – Hydrogen? – Lead? – Chlorine? ...
... nuclear charge, so the atom is neutral? • So how many electrons • Atomic number = number of protons = number of electrons • How many electons are in an atom of: – Hydrogen? – Lead? – Chlorine? ...
Periodic Relationships Among the Elements
... is this specifically referring to and how likely will it happen? 3. The first six Ionization energies (kJ/mol) are listed sequentially for Aluminum. Make two observations from the data. ...
... is this specifically referring to and how likely will it happen? 3. The first six Ionization energies (kJ/mol) are listed sequentially for Aluminum. Make two observations from the data. ...
File
... ·Good conductors of thermal energy. Nonmetals ·Nonmetals are found to the right of the zigzag ·Nonmetals have a high # of valence electrons ·More than half are gases at room temperature ·not malleable ·not ductile ·poor conductors of heat and electricity ·not shiny Metalloids ·Metalloids a ...
... ·Good conductors of thermal energy. Nonmetals ·Nonmetals are found to the right of the zigzag ·Nonmetals have a high # of valence electrons ·More than half are gases at room temperature ·not malleable ·not ductile ·poor conductors of heat and electricity ·not shiny Metalloids ·Metalloids a ...
File
... Know the names and symbols of the first 20 elements. What are the rows of the Periodic Table called? What do they show? What are the columns of the Periodic Table called? What do they show? How are elements in the columns related? ...
... Know the names and symbols of the first 20 elements. What are the rows of the Periodic Table called? What do they show? What are the columns of the Periodic Table called? What do they show? How are elements in the columns related? ...
Chapter 5 Organizing The Elements
... • Elements are divided into those that occur naturally and those that do not • Ex. Elements with an atomic number of 93 or above DO NOT OCCUR NATURALLY • 1-92 occur naturally ...
... • Elements are divided into those that occur naturally and those that do not • Ex. Elements with an atomic number of 93 or above DO NOT OCCUR NATURALLY • 1-92 occur naturally ...