Nature of Atoms Atomic Structure Atomic number Atomic mass
... ◦ Cl atom gains an electron to become Cl– ◦ Opposite charges attract so that Na+ and Cl– remain associated as an ionic compound ...
... ◦ Cl atom gains an electron to become Cl– ◦ Opposite charges attract so that Na+ and Cl– remain associated as an ionic compound ...
Review 2 (Chapters 3,5, 10,11)
... Writing Formulas for Ionic Compounds A. Ionic compounds always contain positive and negative ions B. Formula units form neutral specie Compounds held by covalent bonds -12.6-12.7Covalent Bond -Molecular compounds formed between two or more nonmetals - Attractive forces maximum at bond position - Sha ...
... Writing Formulas for Ionic Compounds A. Ionic compounds always contain positive and negative ions B. Formula units form neutral specie Compounds held by covalent bonds -12.6-12.7Covalent Bond -Molecular compounds formed between two or more nonmetals - Attractive forces maximum at bond position - Sha ...
matter crct/final exam review
... 41. Why do atoms share valence electrons or transfer valence electrons? 42. What is the difference between a compound and an element? ...
... 41. Why do atoms share valence electrons or transfer valence electrons? 42. What is the difference between a compound and an element? ...
Activity: Molecular Geometry
... Realize, then, that the 4 electron pairs around the central atom in H2O and in CH4 are not much different, except that some are unbonded (lone) in H2O. This accounts for the differences in shape and bond angle, since LONE PAIRS REPEL just like bonding pairs; in fact, they repel even more than bondin ...
... Realize, then, that the 4 electron pairs around the central atom in H2O and in CH4 are not much different, except that some are unbonded (lone) in H2O. This accounts for the differences in shape and bond angle, since LONE PAIRS REPEL just like bonding pairs; in fact, they repel even more than bondin ...
Review for Midyear - 1 KEY - Ms. Robbins` PNHS Science Classes
... HS-PS1-1. Use the periodic table as a model to predict the relative properties of main group elements, including ionization energy and relative sizes of atoms and ions, based on the patterns of electrons in the outermost energy level of each element. Use the patterns of valence electron configuratio ...
... HS-PS1-1. Use the periodic table as a model to predict the relative properties of main group elements, including ionization energy and relative sizes of atoms and ions, based on the patterns of electrons in the outermost energy level of each element. Use the patterns of valence electron configuratio ...
Lab Activity: Molecular Model Building
... 2. Make a model of the molecule. Use the short gray plastic connecting rods for single bonds and lone pairs of electrons. Use the longer flexible connecting rods for double and triple bonds. (2 for a double bond; 3 for a triple bond) Use the following colored spheres: ...
... 2. Make a model of the molecule. Use the short gray plastic connecting rods for single bonds and lone pairs of electrons. Use the longer flexible connecting rods for double and triple bonds. (2 for a double bond; 3 for a triple bond) Use the following colored spheres: ...
Periodic Trends
... atoms. Let’s take Na and Cl for example. They are both on n=3. But Cl has 17 protons pulling on n=3 and Na only has 11 protons pulling on n=3. Cl is smaller because it’s nuclear charge is greater. That fact is very important for the trends. Once we can see that the nonmetals tend to be smaller with ...
... atoms. Let’s take Na and Cl for example. They are both on n=3. But Cl has 17 protons pulling on n=3 and Na only has 11 protons pulling on n=3. Cl is smaller because it’s nuclear charge is greater. That fact is very important for the trends. Once we can see that the nonmetals tend to be smaller with ...
1Molecule Shapes
... molecule is assembled, click and drag the screen to spin the atom around. Click on the “Show bond angles.” Use the following key: ...
... molecule is assembled, click and drag the screen to spin the atom around. Click on the “Show bond angles.” Use the following key: ...
Bonding - Berkeley City College
... • Formal charge is apparent charge on an atom in a Lewis formula; it is determined as follows: • Formal charge = (Atom’s group #) – (# of lone-pair electrons on the atom) – (# of covalent bonds the atom forms) ...
... • Formal charge is apparent charge on an atom in a Lewis formula; it is determined as follows: • Formal charge = (Atom’s group #) – (# of lone-pair electrons on the atom) – (# of covalent bonds the atom forms) ...
key to sample questions test 2
... h. Which of the following ions is most likely to be stable. (Hint: consider the Lewis structures) NH NH2 NH3 NH4 i. Which of the following molecules has a Lewis structure similar to that of N2? H2 O2 CO ...
... h. Which of the following ions is most likely to be stable. (Hint: consider the Lewis structures) NH NH2 NH3 NH4 i. Which of the following molecules has a Lewis structure similar to that of N2? H2 O2 CO ...
Solvent Properties Of Water File - District 196 e
... Why can we make so many aqueous solutions? • H2O is known as the “universal solvent” because it can dissolve or be miscible with most ionic and polar substances ***Remember the “Like” dissolves “like” rule ...
... Why can we make so many aqueous solutions? • H2O is known as the “universal solvent” because it can dissolve or be miscible with most ionic and polar substances ***Remember the “Like” dissolves “like” rule ...
An atom is an indivisible particle. is chemically indivisible. is the
... An electrically charged atom is called ...
... An electrically charged atom is called ...
bonding and geometry
... Occurs when there are more than one possible structures for a molecule Refers to bonding in molecules or ions that cannot be correctly represented by a single Lewis structure Example: CO2 To indicate resonance, a double-headed arrow is placed between a molecule’s resonance structures ...
... Occurs when there are more than one possible structures for a molecule Refers to bonding in molecules or ions that cannot be correctly represented by a single Lewis structure Example: CO2 To indicate resonance, a double-headed arrow is placed between a molecule’s resonance structures ...
Ch. 4: Atoms and the Periodic Table – Study Guide
... Dalton’s atomic theory stated that every element was made of atoms that could not be subdivided, atoms of the same element are exactly alike, and atoms can join to form molecules. According to Bohr’s model of the atom, electrons behave like planets orbiting the sun. According to the modern atomic th ...
... Dalton’s atomic theory stated that every element was made of atoms that could not be subdivided, atoms of the same element are exactly alike, and atoms can join to form molecules. According to Bohr’s model of the atom, electrons behave like planets orbiting the sun. According to the modern atomic th ...
biology biology - Napa Valley College
... Each atom wants their outer shell filled. Hydrogen only has one electron in its shell – wants two, so it can form one bond. Carbon has four electrons in outer shell, wants eight, so it can form four bonds. ...
... Each atom wants their outer shell filled. Hydrogen only has one electron in its shell – wants two, so it can form one bond. Carbon has four electrons in outer shell, wants eight, so it can form four bonds. ...
Chemistry - Napa Valley College
... Each atom wants their outer shell filled. Hydrogen only has one electron in its shell – wants two, so it can form one bond. Carbon has four electrons in outer shell, wants eight, so it can form four bonds. ...
... Each atom wants their outer shell filled. Hydrogen only has one electron in its shell – wants two, so it can form one bond. Carbon has four electrons in outer shell, wants eight, so it can form four bonds. ...
Covalent Bonding-compounds & Structures
... –Why? B/c of empty d-orbitals –The atom with the expanded octet is usually the central atom. ...
... –Why? B/c of empty d-orbitals –The atom with the expanded octet is usually the central atom. ...
Chapter 9 Molecular Geometry and Bonding Theories
... bonding n the molecule, the bonding electrons have been totally associated with the two atoms that form the bond they are localised. What about the bonding situation in benzene, the nitrate ion, the carbonate ion? In benzene, the C-C bonds are formed from the sp2 hybrid orbitals. The unhybridise ...
... bonding n the molecule, the bonding electrons have been totally associated with the two atoms that form the bond they are localised. What about the bonding situation in benzene, the nitrate ion, the carbonate ion? In benzene, the C-C bonds are formed from the sp2 hybrid orbitals. The unhybridise ...
Atoms, Molecules, and Ions
... Each element is composed of extremely small particles called atoms. All atoms of a given element are identical; the atoms of different elements are different and have different properties. Atoms of an element are not changed into different types of atoms by chemical changes; atoms are neither create ...
... Each element is composed of extremely small particles called atoms. All atoms of a given element are identical; the atoms of different elements are different and have different properties. Atoms of an element are not changed into different types of atoms by chemical changes; atoms are neither create ...
CHAPTER 2 The Chemical Context of Life Elements and
... sodium (Na) is transferred to a Chlorine (Cl) atom. Two charged species call ions are formed, one positive ion (Na+) and one negative ion (Cl-). The positive and negative ions attract and form an ionic compound (NaCl). ...
... sodium (Na) is transferred to a Chlorine (Cl) atom. Two charged species call ions are formed, one positive ion (Na+) and one negative ion (Cl-). The positive and negative ions attract and form an ionic compound (NaCl). ...