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Molecular Models
Molecular Models

... Molecules, though larger than their constituent atoms, are still staggeringly small. Some of the molecules in nature composed of tens of thousands of atoms are visible only with sophisticated tools such as the electron microscope. It is a wonder that so much is known about the sizes, shapes, and arr ...
NM Strand
NM Strand

... 1. The label on a popular brand of “one-a-day” vitamins says there are 15mg of zinc per tablet. How many grams of zinc are in one tablet? 2. If an atom loses an electron, it becomes a(n) 3. What elements exist as diatomic molecules? 4. What is 1,230 in scientific notation? 5. A salt solution has a c ...
Structure of the Atom
Structure of the Atom

... – A rock has a mass of 5 grams. When placed in a graduated cylinder filled to 10mL, the water rises to 12 mL. What is the density of the rock? – A platinum bar measures 5.0 cm long, 4.0 cm wide, and 1.5 cm thick. It has a mass of 700.0 grams. What is the density of the platinum bar? ...
Final exam 2007
Final exam 2007

... 6. (7) How many L of oxygen, measured at 0 oC and 1.00 atm, are required for the complete combustion of 5.00 g of ethane (C2H6)? ...
atomic mass - ImlerBiology
atomic mass - ImlerBiology

... The number of protons and electrons in most atoms are equal giving the atom a net charge of zero. Periodic Table – the periodic table of elements is used to group elements according to their characteristics. Each element has a number and a symbol. ...
4.Chemical bonding and Molecular Structure
4.Chemical bonding and Molecular Structure

Atom - Alvin ISD
Atom - Alvin ISD

Integrated Science 3
Integrated Science 3

... Matching: Write the letter of the term on the blank line that best answers each question. Answers may be used once, more than once or not at all, only one answer per blank. A) Covalent bond E) Oxygen family I) Halogens _____48. _____49. _____50. _____51. _____52. ...
Living Chemistry Atoms, Molecules and Compounds
Living Chemistry Atoms, Molecules and Compounds

... a. Substances made of only one kind of atom b. Periodic Table represents the known elements and their symbols (Some symbols don’t “make sense” unless you are familiar with their Greek and Latin origins) 2. Compounds a. Made up of two or more elements b. Biological compounds are made mostly of: carbo ...
Chapter 2 PowerPoint
Chapter 2 PowerPoint

... • Key to the chemical behavior of an atom lies in the number and arrangement of its electrons in their orbitals • Bohr model – electrons in discrete orbits • Modern physics defines orbital as area around a nucleus where an electron is most likely to be found • No orbital can contain more than two el ...
chapt02_lecture from text
chapt02_lecture from text

... • Key to the chemical behavior of an atom lies in the number and arrangement of its electrons in their orbitals • Bohr model – electrons in discrete orbits • Modern physics defines orbital as area around a nucleus where an electron is most likely to be found • No orbital can contain more than two el ...
Document
Document

... Covalent compounds are made of molecules, are held together by covalent bonds, share electrons, and are composed of 2 or more non-metals. They also have a lower difference of electronegativity between their atoms. Both types of compounds result from atoms desiring a full octet. ...
I. Chemistry
I. Chemistry

... therefore holds a maximum of 2 electrons. It is called the 1s orbital and it is spherical The second energy level contains a maximum of 4 orbitals. A spherical 2s and 3 dumbbell shaped orbitals in the X, Y, and Z axis called the P1, P2 and P3 orbitals ...
Atom (A) or Ion
Atom (A) or Ion

... A substance has 6 protons, 8 neutrons, and 6 electrons. Decide if each statement is true or false. If false, explain. 17. This substance is nitrogen. 18. This substance is carbon. 19. This substance is an ion. 20. This substance is an isotope of carbon-12 (12C) 21. The Atomic Theory was first stated ...
Atom (A) or Ion (I)
Atom (A) or Ion (I)

... A substance has 6 protons, 8 neutrons, and 6 electrons. Decide if each statement is true or false. If false, explain. 17. This substance is nitrogen. 18. This substance is carbon. 19. This substance is an ion. 20. This substance is an isotope of carbon-12 (12C) 21. The Atomic Theory was first stated ...
Atom (A) or Ion (I)
Atom (A) or Ion (I)

... A substance has 6 protons, 8 neutrons, and 6 electrons. Decide if each statement is true or false. If false, explain. 17. This substance is nitrogen. 18. This substance is carbon. 19. This substance is an ion. 20. This substance is an isotope of carbon-12 (12C) 21. The Atomic Theory was first stated ...
Atomic theory
Atomic theory

... The study of chemistry begins with the basic unit of matter, the atom. The Greek word atomos, which means unable to cut was first used to refer to matter by the Greek philosopher Democritus nearly 2500 years ago. Democritus asked a question.........how small can things be broken down to???? ...
Atom (A) or Ion (I)
Atom (A) or Ion (I)

... This type of bond results from transfer of electrons. This type of bond results from a sharing electrons. This is a bond between two ions. This type of bond would result from the bonding of an element from the far left of the periodic table bonding with an element from the far right. ...
Covalent Bonding
Covalent Bonding

... Group 1 and 17 elements are always at ends Atoms that are less numerous are usually in the middle Hydrogen always forms one single bond Oxygen has two bonding electrons and two lone pairs Nitrogen has three bonding electron and one lone pair Group 13 elements have three bonding electrons and z ...
Honors Chemistry
Honors Chemistry

... 1. Determine the common ion that each element would form and write its complete electron configuration: a. Rb ...
Infrared Spectroscopy
Infrared Spectroscopy

... 1. bonds are composed of the same element (having two atoms with similar electronegativity is not similar enough), or 2. polar covalent bonds are arranged symmetrically. Note that you need to consider all resonance structures when evaluating symmetry. ...
File - Ingolstadt Academy
File - Ingolstadt Academy

...  Dimensional analysis  Instruments that measure mass, volume, pressure, etc. (lab stuff!)  The Scientific Method Atomic Structure: ...
4 CovalentBonds new - Mr-Durands
4 CovalentBonds new - Mr-Durands

... Why the confusion? • Well it turns out that Water is a Molecule that bonds covalently. That means it doesn’t transfer electrons like the compounds we studied before. Water bonds by SHARING electrons. This means that we have to have a totally different way to name these compounds. ...
The structure of Matter
The structure of Matter

... O Atoms will form either IONIC or COVALENT bonds. O The way that an atom bonds determines many of its properties. ...
Unit 2 Review for Test
Unit 2 Review for Test

... Chemical reactions are important for cell growth and maintenance. Chemical reactions are important in the production of new elements. Chemical reactions are important for energy storage and use. Chemical reactions are important for cell development. 20. Define: ion. 21. Choose the best response: Cov ...
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Hypervalent molecule

A hypervalent molecule (the phenomenon is sometimes colloquially known as expanded octet) is a molecule that contains one or more main group elements formally bearing more than eight electrons in their valence shells. Phosphorus pentachloride (PCl5), sulfur hexafluoride (SF6), chlorine trifluoride (ClF3), and the triiodide (I3−) ion are examples of hypervalent molecules.
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