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Draw a Bohr Model of Oxygen
An atom that does NOT have 8 electrons in the outer shell and tries to combine with other atoms is __________ reactive
Lewis Dot Diagram of Hydrogen
Total Number of electrons: H
Force that holds atoms togetherChemical Bond
When atoms share electrons equally to fill their outermost energy levels, the form:Nonpolar Covalent
Total Number of electrons: Carbon6
Lewis Dot Diagram of Carbon
Lewis Dot Diagram of Oxygen
Number of protons is known as _____Atomic number
Total Number of electrons: Nitrogen7
Draw a Bohr Model of Nitrogen
How many electrons would Carbon gain or lose?4
BONUS: Write the chemical formula3 minutes: the following atoms use and IONIC BOND. Show how the atoms will bond & write the charge for each ion: K + Cl BONUS: Write the chemical formula
Two or more atoms combined by a chemical bond:compound
Number of Protons in Sulfur16
How many valence electrons does Nitrogen have?5
When atoms share electrons unequally to fill their valence shell, the form this type of bond:Polar Covalent
Atom has 8 electrons or full outer shellStable
Mass of electron is known as:Atomic mass
How many electrons would nitrogen gain or lose?3 gained
BONUS: Write the chemical formula3 minutes: the following atoms use and COVALENT BOND. Show how the atoms will bond & write the charge for each ion: O + O BONUS: Write the chemical formula
How many electrons does Sulfur have?16
Lewis Dot Diagram of Sulfur
Draw the Bohr Model for Phosphorous (2 mins)
Pure Substance made of 1 type of AtomElement
Anything that takes up space and has massMatter
How main electrons would Sulfur gain or lose?2 gained
Lewis Dot Diagram of Nitrogen
How many electrons would Hydrogen gain/or lose?1
Smallest part of matter with properties of the elementatom
Electrons on outer energy levelValence Electron
Lewis Dot Diagram of Phosphorous
How many electrons would oxygen gain or lose?2 gained
The following atoms bond POLAR COVALENTLY. Show how the atoms bond: H20
Draw a Bohr Model of Sulfur
What are the SIX most common elements for life?CHNOPS
What are the FOUR most common elements?Carbon Hydrogen Nitrogen Oxygen
Ionic and Covalent Bonding 1. Bonding Atoms with unfilled valence shells are considered unstable. Atoms will try to fill their outer shells by bonding.
Ch. 2: “Chemistry of Life”
Chapter 2: Chemistry.
Biology 107 Chemical Context of Life August 30, 2002.
Biology 107 Chemical Context of Life August 29, 2003.
Chemistry of Life Biology Chapter 2.
Chapter 4 The Chemical Basis of Life. Matter Matter = any material substance with Mass & Volume.
Ionic Bonding & Covalent Bonding. Ionic Bonding Ionic Bonding – TRANSFER of electrons Metals + Nonmetals = Ionic Bond.
Tech Notes: Why Atoms Combine Molecule and Compound: Two or more atoms chemically combined Have completely different properties than those of the.
Class Starter Look at the different substances and write down which substances you think are composed of elements and which are composed of compounds.
2.1 Atoms, Ions, and Molecules KEY CONCEPT All living things are based on atoms and their interactions.
Atoms, Elements, & Compounds Biology II D. Mitchell.
Bohr Models and Lewis Dot Structures. Atoms ** Basic unit of matter Consists of: Electrons, Protons, & Neutrons.
Combined elements –Compounds = unique properties from the elements that make them up. –NaCl for example Na = shiny, soft, silvery, metal that reacts violently.
Chemistry of Life. Composition of Matter anything that occupies space and has mass Matter is the quantity of matter an object has Mass Mass vs. Weight.
Objective: To describe how atoms bond together to form compounds using valence electrons Journal: ◦ How many protons, neutrons and electrons are in.
Lewis Structures and Chemical Bonding. Valence Electrons The electrons that exist in the outermost electron shell of an atom We can determine the number.
Chemical Bonding Joining atoms together to make compounds.
Chemistry. Matter All living things are made of matter Cannot be created or destroyed.
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