Chemistry EOC Review Spring 2013
... 36. What is the energy associated with the photon in problem above? ...
... 36. What is the energy associated with the photon in problem above? ...
ELECTRONS IN ATOMS
... values. The space around the nucleus of an atom where the atom’s electrons are found is called the electron ________________. A three-dimensional region around the nucleus called an atomic __________________ describes the electron’s probable location. In general, electrons reside in principal ______ ...
... values. The space around the nucleus of an atom where the atom’s electrons are found is called the electron ________________. A three-dimensional region around the nucleus called an atomic __________________ describes the electron’s probable location. In general, electrons reside in principal ______ ...
Atoms, compounds and elements - Mrs. Tes de Luna`s Science Class
... ◦ The first part of his theory states that all matter is made of atoms, which are indivisible. ◦ The second part of the theory says all atoms of a given element are identical in mass and properties. ◦ The third part says compounds are combinations of two or more different types of atoms. ◦ The fourt ...
... ◦ The first part of his theory states that all matter is made of atoms, which are indivisible. ◦ The second part of the theory says all atoms of a given element are identical in mass and properties. ◦ The third part says compounds are combinations of two or more different types of atoms. ◦ The fourt ...
The Atomic Model
... 1913, proposed the Planetary Model of the atom. • Electrons move in definite orbits around the nucleus, like planets moving around the nucleus. Bohr proposed that each electron moves in a specific energy level. ...
... 1913, proposed the Planetary Model of the atom. • Electrons move in definite orbits around the nucleus, like planets moving around the nucleus. Bohr proposed that each electron moves in a specific energy level. ...
Chapters 6, 8
... There are ~ 11 million chemical compounds. Some of the arbitrary (common) names you may recognize (water = hydrogen oxide H2O, laughing gas = dinitrogen monoxide N2O, quicksilver = mercury Hg). One cannot memorize arbitrary names of all of them. Chemical nomenclature is the system of names for compo ...
... There are ~ 11 million chemical compounds. Some of the arbitrary (common) names you may recognize (water = hydrogen oxide H2O, laughing gas = dinitrogen monoxide N2O, quicksilver = mercury Hg). One cannot memorize arbitrary names of all of them. Chemical nomenclature is the system of names for compo ...
Chemistry Unit 2: Atomic Structure Unit Assignment #1 1. State the
... 12. How do the three isotopes of hydrogen (H–1, H–2, H–3) compare in terms of the numbers of subatomic particles in each? 13. Write the nuclear symbol for deuterium (H-2): a. Identify the atomic number b. Identify the mass number 14. Determine the number of protons, neutrons, and electrons in Co–59. ...
... 12. How do the three isotopes of hydrogen (H–1, H–2, H–3) compare in terms of the numbers of subatomic particles in each? 13. Write the nuclear symbol for deuterium (H-2): a. Identify the atomic number b. Identify the mass number 14. Determine the number of protons, neutrons, and electrons in Co–59. ...
Subatomic Particles
... balanced by a negative charge. i.e. # of protons = # of electrons Each proton has an electron to offset its charge ...
... balanced by a negative charge. i.e. # of protons = # of electrons Each proton has an electron to offset its charge ...
Chapter 5 Section 5.1 & 5.2
... energy levels • The energy levels in atoms are unequally spaced (higher energy levels are closer together) ...
... energy levels • The energy levels in atoms are unequally spaced (higher energy levels are closer together) ...
File
... Silicon- 28 must be by far the most abundant. The other two isotopes must be present in very small amounts. ...
... Silicon- 28 must be by far the most abundant. The other two isotopes must be present in very small amounts. ...
2ModelsOfAtom
... Theory: “Plum Pudding Model” Atoms are composed of smaller particles. These particles are the same for all different types of atoms. These particles are negatively charged and are called electrons. Electrons are embedded throughout the uniform sphere of positive charge to make up a neutral ...
... Theory: “Plum Pudding Model” Atoms are composed of smaller particles. These particles are the same for all different types of atoms. These particles are negatively charged and are called electrons. Electrons are embedded throughout the uniform sphere of positive charge to make up a neutral ...
Chemistry I Review - BarbaraElam-Rice
... 32) Describe the 3 intermolecular forces? Which of these forces is the strongest? weakest? 33) How are intermolecular forces different from chemical bonds? Which is stronger? 34) If the electronegativity difference between atoms is greater than 1.7, what type of bond will form? If the difference is ...
... 32) Describe the 3 intermolecular forces? Which of these forces is the strongest? weakest? 33) How are intermolecular forces different from chemical bonds? Which is stronger? 34) If the electronegativity difference between atoms is greater than 1.7, what type of bond will form? If the difference is ...
O usually has oxidation number of -2, except in peroxides where it is
... -In calcium oxide, CaO, oxide ion has a 2- charge. Its oxidation number is -2 -In H2O2, Each O is assigned the oxidation number of -1 5. Covalent Compounds: In compounds that do not contain hydrogen or oxygen, the more electronegative element is assigned the oxidation number it would have in an ioni ...
... -In calcium oxide, CaO, oxide ion has a 2- charge. Its oxidation number is -2 -In H2O2, Each O is assigned the oxidation number of -1 5. Covalent Compounds: In compounds that do not contain hydrogen or oxygen, the more electronegative element is assigned the oxidation number it would have in an ioni ...
001_014_CMC_SN_SE_878755.qxd
... List the main points of Dalton’s atomic theory. All matter is composed of extremely small particles called 1. ______________________________________________________ atoms. ______________________________________________________ All atoms of a given element are identical in size, mass, and 2. ________ ...
... List the main points of Dalton’s atomic theory. All matter is composed of extremely small particles called 1. ______________________________________________________ atoms. ______________________________________________________ All atoms of a given element are identical in size, mass, and 2. ________ ...
Here
... 1. A mixture of elements that have metallic properties 2. Substitutional alloy – different metal cations of similar size are combined 3. Interstitial alloy – smaller atoms fill the holes in the metal lattice ...
... 1. A mixture of elements that have metallic properties 2. Substitutional alloy – different metal cations of similar size are combined 3. Interstitial alloy – smaller atoms fill the holes in the metal lattice ...
Concepts to know for the Unit 3 test
... Concepts to know for the Unit 3 test: 1. Summarize the major experimental evidence that led to the development of various atomic models, both historical and current. 2. Evaluate the limitations of using models to describe atoms. a. Aristotle: a. WRONG, four elements – earth, air, water, fire b. Demo ...
... Concepts to know for the Unit 3 test: 1. Summarize the major experimental evidence that led to the development of various atomic models, both historical and current. 2. Evaluate the limitations of using models to describe atoms. a. Aristotle: a. WRONG, four elements – earth, air, water, fire b. Demo ...
Regular Chemistry - 1st Semester Final Practice Exam
... A) In a physical change, matter does not change its composition. B) Phase changes are always physical changes. C) Chemical reactions are chemical changes. D) In a chemical change, matter changes its composition. E) All of the above statements are true. 34) What is the value of 335 K on the Celsius t ...
... A) In a physical change, matter does not change its composition. B) Phase changes are always physical changes. C) Chemical reactions are chemical changes. D) In a chemical change, matter changes its composition. E) All of the above statements are true. 34) What is the value of 335 K on the Celsius t ...
CHEM121 Lecture Ch5 student
... hydrazine (N2H4) and dinitrogen tetraoxide are liquids that ignite to form nitrogen gas and water vapor ...
... hydrazine (N2H4) and dinitrogen tetraoxide are liquids that ignite to form nitrogen gas and water vapor ...
Constructing an Atom We`re going sub-atomic!
... depends if an Atom is negatively charged or positively charge. – So if it has more protons then electrons then it will be _________________? – If it has more Electrons then Proton then it will be ...
... depends if an Atom is negatively charged or positively charge. – So if it has more protons then electrons then it will be _________________? – If it has more Electrons then Proton then it will be ...
Chapter 4 ppt.
... arrangement of elements in which the elements are separated into groups based on a set of repeating properties The periodic table allows you to easily compare the properties of one element to another ...
... arrangement of elements in which the elements are separated into groups based on a set of repeating properties The periodic table allows you to easily compare the properties of one element to another ...
Atomic Mass
... Protons (+): They have a positive charge. Atomic mass = 1 amu # of Protons = Atomic Number Neutrons (n): They have a neutral charge. Atomic mass = 1 amu # of Neutrons = (Atomic Mass) – (Atomic #) Electrons (-): They have a negative charge. Very small mass & are located in different energy level shel ...
... Protons (+): They have a positive charge. Atomic mass = 1 amu # of Protons = Atomic Number Neutrons (n): They have a neutral charge. Atomic mass = 1 amu # of Neutrons = (Atomic Mass) – (Atomic #) Electrons (-): They have a negative charge. Very small mass & are located in different energy level shel ...
unit 3 - structure, history of the atom, density
... Electrodes are small pieces of metal through which electrical current is input. In this case, the electrodes are embedded in the ends of a sealed glass tube and electricity is input through the cathode. The (-) negative electrode is called the cathode; (+) positive electrode is called the anode Befo ...
... Electrodes are small pieces of metal through which electrical current is input. In this case, the electrodes are embedded in the ends of a sealed glass tube and electricity is input through the cathode. The (-) negative electrode is called the cathode; (+) positive electrode is called the anode Befo ...
ch14 lecture 7e
... Trends for the Period 2 Elements • Atomic size generally decreases across the period. • Ionization energy and electronegativity increase across the period. • Metallic character decreases across the period. – The type of bonding exhibited changes with metallic character. ...
... Trends for the Period 2 Elements • Atomic size generally decreases across the period. • Ionization energy and electronegativity increase across the period. • Metallic character decreases across the period. – The type of bonding exhibited changes with metallic character. ...
Unit 2 – Atomic Theory
... Element Symbol with mass number and atomic number Can also be the element name dash mass number Mass Number ...
... Element Symbol with mass number and atomic number Can also be the element name dash mass number Mass Number ...