Atomic Structure Power Point
... is a form of an element that has the same number of protons, but different numbers of neutrons. The atomic mass on the periodic table reflects the average mass of all of the known isotopes of an element. Each isotope may have different characteristics. ...
... is a form of an element that has the same number of protons, but different numbers of neutrons. The atomic mass on the periodic table reflects the average mass of all of the known isotopes of an element. Each isotope may have different characteristics. ...
CP Chemistry First Semester Final Exam 1
... 67. What is the general classification of elements right of the zigzag line on the periodic table? 68. What is a period on the periodic table? 69. What is the family name of the group 7A elements? 70. What occupies the majority of the volume of an atom? 71-74 Determine the number of valence electron ...
... 67. What is the general classification of elements right of the zigzag line on the periodic table? 68. What is a period on the periodic table? 69. What is the family name of the group 7A elements? 70. What occupies the majority of the volume of an atom? 71-74 Determine the number of valence electron ...
Atoms and the
... The complete symbol for an atom or ion consists of the elemental symbol surrounded by subscripts and superscripts. a) The leading superscript (upper left) is the mass number. This is also the number of nucleons; a nucleon is a proton or a neutron. b) The leading subscript (lower left) is the atomic ...
... The complete symbol for an atom or ion consists of the elemental symbol surrounded by subscripts and superscripts. a) The leading superscript (upper left) is the mass number. This is also the number of nucleons; a nucleon is a proton or a neutron. b) The leading subscript (lower left) is the atomic ...
Atoms and the
... The complete symbol for an atom or ion consists of the elemental symbol surrounded by subscripts and superscripts. a) The leading superscript (upper left) is the mass number. This is also the number of nucleons; a nucleon is a proton or a neutron. b) The leading subscript (lower left) is the atomic ...
... The complete symbol for an atom or ion consists of the elemental symbol surrounded by subscripts and superscripts. a) The leading superscript (upper left) is the mass number. This is also the number of nucleons; a nucleon is a proton or a neutron. b) The leading subscript (lower left) is the atomic ...
Glossary of Terms Used in Articles about the Hydrogen Economy at
... according to periodic law. This grouping places atoms that have the same number of electrons in the outer shell in the same “period.” Then, all elements are arranged by increasing atomic number, creating groups that are meaningful to scientists. R. T. Sanderson submitted a modern definition of perio ...
... according to periodic law. This grouping places atoms that have the same number of electrons in the outer shell in the same “period.” Then, all elements are arranged by increasing atomic number, creating groups that are meaningful to scientists. R. T. Sanderson submitted a modern definition of perio ...
Basic structure of atoms
... Electron cloud • Electrons move very rapidly in complicated paths called orbitals. • Because of this motion, they appear to form a cloud. – Negative charge -1 – Mass: 9.1 x10-28 grams – Symbols include e-, -1e0 ...
... Electron cloud • Electrons move very rapidly in complicated paths called orbitals. • Because of this motion, they appear to form a cloud. – Negative charge -1 – Mass: 9.1 x10-28 grams – Symbols include e-, -1e0 ...
Test #5 Review
... Which force holds the nucleus together? the strong force Which force holds the electrons around the nucleus? the electromagnetic force Define mass number. number of protons + number of neutrons ...
... Which force holds the nucleus together? the strong force Which force holds the electrons around the nucleus? the electromagnetic force Define mass number. number of protons + number of neutrons ...
1 - M*W
... d) B & C 34) Halogens, like fluorine, are very reactive because a) They want to gain an electron to complete their outer energy level b) They want to lose an electron to complete their outer energy level c) They want to gain a proton in their nucleus d) They want to lose a proton from their nucleus ...
... d) B & C 34) Halogens, like fluorine, are very reactive because a) They want to gain an electron to complete their outer energy level b) They want to lose an electron to complete their outer energy level c) They want to gain a proton in their nucleus d) They want to lose a proton from their nucleus ...
Exam #2
... (a) Electron affinities decrease going down the group (from smaller to larger elements). (b) Ionization energies decrease going down the group (from smaller to larger elements). (c) Chemical reactivity decreases going down the group (from smaller to larger elements). (d) The second ionization energy ...
... (a) Electron affinities decrease going down the group (from smaller to larger elements). (b) Ionization energies decrease going down the group (from smaller to larger elements). (c) Chemical reactivity decreases going down the group (from smaller to larger elements). (d) The second ionization energy ...
Atomic number
... atomic masses & discovered a repeating pattern of properties or characteristics. ***There were some gaps in masses so he placed question marks in their spots. Later, elements were discovered to fill in these gaps. His predictions about elements, their masses & properties proved to be true.*** Henry ...
... atomic masses & discovered a repeating pattern of properties or characteristics. ***There were some gaps in masses so he placed question marks in their spots. Later, elements were discovered to fill in these gaps. His predictions about elements, their masses & properties proved to be true.*** Henry ...
Chapter 8
... Electron affinity is the negative of the energy change that occurs when an electron is accepted by an atom in the gaseous state to form an anion. X (g) + e- ...
... Electron affinity is the negative of the energy change that occurs when an electron is accepted by an atom in the gaseous state to form an anion. X (g) + e- ...
2nd Semester Review
... 6. What causes a substance to change from one state to another?_______________________________ 7. Write physical or chemical change for each of the following: Water evaporating burning toast Fireworks exploding ice melting ...
... 6. What causes a substance to change from one state to another?_______________________________ 7. Write physical or chemical change for each of the following: Water evaporating burning toast Fireworks exploding ice melting ...
What does an elements atomic # tell us about the element?
... Smallest part of a compound that still has all the properties of that compound Compound can have properties entirely unlike the elements of which it is made ...
... Smallest part of a compound that still has all the properties of that compound Compound can have properties entirely unlike the elements of which it is made ...
Physical Science Notes–Ch. 17-Glencoe
... He looked at the _____________________________________of the elements surrounding these blank spaces. ...
... He looked at the _____________________________________of the elements surrounding these blank spaces. ...
Atoms: The Building Blocks of Matter
... ▫ atomic mass units ▫ masses so small, came up with scale that is relative ▫ amu = mass of 1/12 mass of carbon-12 atom • Average atomic masses ▫ # on periodic table ▫ Decimals averages ...
... ▫ atomic mass units ▫ masses so small, came up with scale that is relative ▫ amu = mass of 1/12 mass of carbon-12 atom • Average atomic masses ▫ # on periodic table ▫ Decimals averages ...
Atomic Structure/Electrons
... 10. He discovered the electron and developed the “plum pudding” model. B 11. His five postulates make up atomic theory. A 12. His gold foil experiment led to his discovery of the nucleus. C 13. He developed the planetary model of the atom, which described the light spectrum. D 14. What is the shape ...
... 10. He discovered the electron and developed the “plum pudding” model. B 11. His five postulates make up atomic theory. A 12. His gold foil experiment led to his discovery of the nucleus. C 13. He developed the planetary model of the atom, which described the light spectrum. D 14. What is the shape ...
Year 11 Chemistry Balancing Equations
... Looking over your electron configurations, are there any elements above that have similar valence electron configurations to those of other elements? If so, list below the elements that are similar (in terms of valence electrons) and state the similarity for each of the groups. ...
... Looking over your electron configurations, are there any elements above that have similar valence electron configurations to those of other elements? If so, list below the elements that are similar (in terms of valence electrons) and state the similarity for each of the groups. ...
chapters 1-4
... Atom – smallest building block; molecule – combination of two or more atoms. Can be an element or compound. ...
... Atom – smallest building block; molecule – combination of two or more atoms. Can be an element or compound. ...
Section 4.3 Notes
... 1. Describe periodic trends in the ionization energy, atomic radius, and electronegativity. 2. Relate the periodic trends to the atomic structures of the elements. 3. Describe periodic trends in ionic size, electron affinity, and melting and boiling points, and relate them to periodic trends in the ...
... 1. Describe periodic trends in the ionization energy, atomic radius, and electronegativity. 2. Relate the periodic trends to the atomic structures of the elements. 3. Describe periodic trends in ionic size, electron affinity, and melting and boiling points, and relate them to periodic trends in the ...
Answers
... chemical properties, as they only have the same number of outermost shell electrons, not the same number of electrons. [1] (e) Sodium melted into a silvery ball [1] which moved about very quickly on the water surface, [1] producing a hissing sound [1] before finally disappearing completely [1]. (f) ...
... chemical properties, as they only have the same number of outermost shell electrons, not the same number of electrons. [1] (e) Sodium melted into a silvery ball [1] which moved about very quickly on the water surface, [1] producing a hissing sound [1] before finally disappearing completely [1]. (f) ...
File - Fern Creek Chemistry
... Name:_____________________________ Date:______________________ Pd:_____ ...
... Name:_____________________________ Date:______________________ Pd:_____ ...
Structure-Prop of Matter session
... Carbon-14 and Carbon-13 atoms’ are not as stable as carbon-12 and easily break down. If an isotope has too many or too few neutrons compared to the number of protons, it is unstable and will undergo radioactive decay. These radioactive isotopes become different elements in an effort to become more s ...
... Carbon-14 and Carbon-13 atoms’ are not as stable as carbon-12 and easily break down. If an isotope has too many or too few neutrons compared to the number of protons, it is unstable and will undergo radioactive decay. These radioactive isotopes become different elements in an effort to become more s ...
File - Science With BLT
... 1. The periodic law allows some properties of an element to be predicted based on its a. position in the periodic table. c. symbol. b. number of isotopes. d. color. 2. The periodic law states that a. no two electrons with the same spin can be found in the same place in an atom. b. the physical and c ...
... 1. The periodic law allows some properties of an element to be predicted based on its a. position in the periodic table. c. symbol. b. number of isotopes. d. color. 2. The periodic law states that a. no two electrons with the same spin can be found in the same place in an atom. b. the physical and c ...
Goal 1 Study Guide
... c. aluminum d. fluorine e. calcium f. nitrogen 14. An electron configuration can be effective for describing the number of energy levels and the number of valence electrons for all of the elements. In the quantum mechanical model, what is the maximum number of electrons allowed in each of the first ...
... c. aluminum d. fluorine e. calcium f. nitrogen 14. An electron configuration can be effective for describing the number of energy levels and the number of valence electrons for all of the elements. In the quantum mechanical model, what is the maximum number of electrons allowed in each of the first ...