Periodic Trends Discovery Activity
... 1. The number of protons is the atomic number (usually above the element symbol). 2. As you go up in energy levels, you get much bigger electron orbital clouds. 3. All atoms want a full outer electron shell (this is almost always 8 valence electrons). 4. Sometimes a full set of valence electrons is ...
... 1. The number of protons is the atomic number (usually above the element symbol). 2. As you go up in energy levels, you get much bigger electron orbital clouds. 3. All atoms want a full outer electron shell (this is almost always 8 valence electrons). 4. Sometimes a full set of valence electrons is ...
Ch 3: Atoms
... atomic # (Z) - (always a whole number, smaller number on the periodic table) = # of protons in the nucleus - also indicates the # of electrons if the element is not charged atomic mass – the average mass of all of the isotopes of an element – is a number with a decimal – is always the larger number ...
... atomic # (Z) - (always a whole number, smaller number on the periodic table) = # of protons in the nucleus - also indicates the # of electrons if the element is not charged atomic mass – the average mass of all of the isotopes of an element – is a number with a decimal – is always the larger number ...
Atomic Structure ppt
... Smallest unit into which matter can be divided, while still maintaining its properties. An Element is composed of ONE type of atom. ...
... Smallest unit into which matter can be divided, while still maintaining its properties. An Element is composed of ONE type of atom. ...
The Chemistry of Biology
... • Synthesis: reactants bond together to form an entirely new molecule • A + B AB • S + O2 SO2 • 2H2 + O2 2H2O (note that equations must be balanced) • Decomposition: bonds on a single reactant molecule are permanently broken to release two or more product molecules • AB A + B • 2H2O2 2H2O ...
... • Synthesis: reactants bond together to form an entirely new molecule • A + B AB • S + O2 SO2 • 2H2 + O2 2H2O (note that equations must be balanced) • Decomposition: bonds on a single reactant molecule are permanently broken to release two or more product molecules • AB A + B • 2H2O2 2H2O ...
Chemistry 1- Final Exam Review
... ____ 67. Which of these elements does not exist as a diatomic molecule? a. C c. H b. F d. I ____ 68. At constant temperature and pressure, gas volume is directly proportional to the a. molar mass of the gas. c. density of the gas at STP. b. number of moles of gas. d. pressure of the gas ____ 69. Ca ...
... ____ 67. Which of these elements does not exist as a diatomic molecule? a. C c. H b. F d. I ____ 68. At constant temperature and pressure, gas volume is directly proportional to the a. molar mass of the gas. c. density of the gas at STP. b. number of moles of gas. d. pressure of the gas ____ 69. Ca ...
Chp 3 notes Click Here
... Atoms can gain from other atoms or lose electrons to other atoms. An atom that loses an electron has a net positive charge because there are more protons than electrons. Remember the atom started with equal numbers of protons and electrons. An atom that gains an electron has a net negative charge be ...
... Atoms can gain from other atoms or lose electrons to other atoms. An atom that loses an electron has a net positive charge because there are more protons than electrons. Remember the atom started with equal numbers of protons and electrons. An atom that gains an electron has a net negative charge be ...
What is matter made of?
... System Model ~ 1913 Said that electrons orbit the nucleus along certain paths called energy levels or orbitals. Chemical properties are determined by the electrons in the outermost orbit. ...
... System Model ~ 1913 Said that electrons orbit the nucleus along certain paths called energy levels or orbitals. Chemical properties are determined by the electrons in the outermost orbit. ...
Sample - Mocks.ie
... When an atom is given energy e.g. heated by a Bunsen burner, the electrons in the atom absorb energy (photons), jump to higher energy levels i.e. excited state. The excited state is unstable As a result, the electrons fall back to the lower energy levels As they do so, they emit energy as co ...
... When an atom is given energy e.g. heated by a Bunsen burner, the electrons in the atom absorb energy (photons), jump to higher energy levels i.e. excited state. The excited state is unstable As a result, the electrons fall back to the lower energy levels As they do so, they emit energy as co ...
File - Science 90 / Biology 20
... • Each electron in an orbit has a definite amount of energy. • The further the electron is from the nucleus, the more energy it has. • Electrons do not exist between the orbits but can move from one orbit to another. • The order of filling of electrons in the first three orbits is 2, 8, 8. • Electr ...
... • Each electron in an orbit has a definite amount of energy. • The further the electron is from the nucleus, the more energy it has. • Electrons do not exist between the orbits but can move from one orbit to another. • The order of filling of electrons in the first three orbits is 2, 8, 8. • Electr ...
Notes ch 3.2 - Douglas County
... • JJ Thompson :( (Plum Pudding Model, 1904) =ball of positive charge with electrons throughout ...
... • JJ Thompson :( (Plum Pudding Model, 1904) =ball of positive charge with electrons throughout ...
Chapter 2
... John Dalton and the Atomic Theory of Matter • 1. All matter is composed of extremely small particles called atoms. • 2. All atoms of a given element are alike and differ from the atoms of any other element. • 3. Compounds are formed when atoms of different elements combine in fixed proportions. • 4 ...
... John Dalton and the Atomic Theory of Matter • 1. All matter is composed of extremely small particles called atoms. • 2. All atoms of a given element are alike and differ from the atoms of any other element. • 3. Compounds are formed when atoms of different elements combine in fixed proportions. • 4 ...
Chapter 2 Atoms, Molecules, and Ions
... The Atomic Theory of Matter • Democritus (460–370 bce) and other early Greek philosophers described the material world as made up of tiny, indivisible particles that they called atomos, meaning “indivisible” or “uncuttable.” • Plato and Aristotle did not embrace the atomic ideas of Leucippus and De ...
... The Atomic Theory of Matter • Democritus (460–370 bce) and other early Greek philosophers described the material world as made up of tiny, indivisible particles that they called atomos, meaning “indivisible” or “uncuttable.” • Plato and Aristotle did not embrace the atomic ideas of Leucippus and De ...
Atomic Structure Notes Blank
... If ______________ are added to or subtracted from a neutral atom, the resulting particle is called: ION # of protons ______ # of electrons Electrons have a ______________ charge so: - ______________ a______________ charge produces a ______________ion - ______________ = # of e-______# of p’s - ____ ...
... If ______________ are added to or subtracted from a neutral atom, the resulting particle is called: ION # of protons ______ # of electrons Electrons have a ______________ charge so: - ______________ a______________ charge produces a ______________ion - ______________ = # of e-______# of p’s - ____ ...
atom atomic symbol atomic number # protons atomic mass
... (Use the large colored marshmallows for protons) Number of Neutrons = Atomic Mass – Atomic Number (Use the large white marshmallows for neutrons) Number of Electrons = Number of Protons (Use the small colored marshmallows for electrons) ...
... (Use the large colored marshmallows for protons) Number of Neutrons = Atomic Mass – Atomic Number (Use the large white marshmallows for neutrons) Number of Electrons = Number of Protons (Use the small colored marshmallows for electrons) ...
Chem102_ch03_atoms_and_the_periodic_table
... Electrons in the highest occupied energy level are the greatest stable distance from the nucleus. These outermost electrons are known as valence electrons. Shell is a principal energy level defined by a given value of n, where n can be 1,2,3,4 etc… and is capable of holding 2n2 electrons. An orbital ...
... Electrons in the highest occupied energy level are the greatest stable distance from the nucleus. These outermost electrons are known as valence electrons. Shell is a principal energy level defined by a given value of n, where n can be 1,2,3,4 etc… and is capable of holding 2n2 electrons. An orbital ...
Atoms Family - The Science Queen
... The term matter describes all of the physical substances around us: your table, your body, a pencil, water, and so forth ...
... The term matter describes all of the physical substances around us: your table, your body, a pencil, water, and so forth ...
Chemistry EOC Review 2015 Name Per ___ This review is part of
... Describe trends in properties (e.g., ionization energy or reactivity as a function of location on the periodic table, boiling point of organic liquids as a function of molecular weight). Atomic radius is one-half of the distance between the center of identical atoms that are not bonded together. Ion ...
... Describe trends in properties (e.g., ionization energy or reactivity as a function of location on the periodic table, boiling point of organic liquids as a function of molecular weight). Atomic radius is one-half of the distance between the center of identical atoms that are not bonded together. Ion ...