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71 72 Starter: Which of these has the greatest mass and why?
Molecules, Compounds, Elements, and bonds Molecules, Compounds, Elements, and bonds 71 72 10/19/15 10/19/15 EQ: How do properties of elements and compounds relate to Bonding? Application Notes: Glue here when done Connection: Ws: Elements and Compounds turn in when done Name some compounds that you know you use in your life Exit : Write two things that you learned today from the lesson . Starter: Which of these has the greatest mass and why? Practice: Compound: Element:
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1 Starter 2. Notes 3. Activity 4. Exit
October 192, 2015 AGENDA 8.5 D, 6.5C I will be able to recognize the difference between an element and a compound and how they are used in chemical formulas by writing, speaking, and reading during notes and an activity.
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Starter Which of these has the greatest mass and why?
3 because It has 5 protons and 6 neutrons which equals the mass of the atom
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Table of Contents Date Lecture/ Activity/ Lab Page
10/ Metals, Nonmetals, and Metalliods 10/ Comparing Elements Lab 10/6 Periodic table Graphic Organizer 10/ Coloring the periodic table 10/ Periodic Puzzles 10/ Bohr Model Challenge Wheres Al 10/ Density 10/ Density Lab 10/ Molecules, Compounds, and Elements
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Application: Atoms, Elements, Molecules, https://www. youtube
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Atoms-REMEMBER An atom is the smallest particle of an element that still has the properties of that element. All matter is made of atoms, even you.
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Atoms Atoms are structures too small for us to see, even with aid of a microscope. Because we can’t see atoms, we use models to help us study and understand them
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Atom model We often use circles to represent atoms and put them together to represent molecules. Some use a bar or a line to represent the bonds between the atoms and some don’t. N N
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Elements An element is a substance made of only one kind of atom.
Elements can be arranged to form new substances. O N O N
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Molecule Element Compound
A molecule is formed when 2 or more atoms bond together. If a molecule is made up of only 1 kind of atom we call it an element. If the molecule is made up of 2 or more kinds of atoms we call it a compound. Compound
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Molecules Atoms of elements often bond together to form molecules.
Atoms of oxygen bond together to form oxygen molecules or O2. O O O O
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Element Molecules Hydrogen molecules are formed when 2 hydrogen atoms bond together. H H Sulfur molecules are formed when 8 sulfur atoms bond together. S This molecule is made of only 1 kind of atom so it is considered an element.
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Compounds A compound is two or more elements joined together by a chemical bond. Water is an example of a compound. Each molecules is made up of 1 oxygen atom and 2 hydrogen atoms.
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Sugar Compound The simple sugar glucose is a compound made up of 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms. O C C C C C C
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Glucose Glucose is a product of photosynthesis. Atoms are rearranged to produce oxygen and glucose. O + +
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Compound Properties The properties of a compound are often very different from the elements they are made up of. For example, at room temperature hydrogen and oxygen are both gases but water is a liquid. 2 Hydrogen Oxygen “yields” Water (hydrogen oxide) +
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Covalent Bond formed when two atoms share one or more electron pairs; usually non-metals Draw picture
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A water molecule is an example of the single covalent bond between oxygen and hydrogen. Draw picture
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An IONIC BOND is an electrostatic interaction that holds together a positively charged ion (cation-losing and electron) and a negatively charged ion (anion-gaining an electron). Draw picture
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the result of the attraction of oppositely charged ions (between metal and non-metal-transfer of electrons) Draw picture
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Molecules: Elements vs. Compounds
Look at the molecule . Decide what elements make-up it up. Distinguish between Element and compound. Formula of Molecule # of atoms in molecule and elements Classification: Element or Compound Type of Bond: Ionic or Covalent H2O 2- hydrogen and oxygen compound Covalent AlPO4 1-Aluminum , 1-Phosporus 4-Oxygen Compound Ionic FI2 1-Fluorine , 2-Iodine Compound Covalent O3 3-Oxygen Element Covalent
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71 72 Starter: Which of these has the greatest mass and why?
Molecules, Compounds, Elements, and bonds Molecules, Compounds, Elements, and bonds 71 72 10/19/15 10/19/15 EQ: How do properties of elements and compounds relate to Bonding? Application Notes: Glue here when done Connection: Ws: Elements and Compounds turn in when done Name some compounds that you know you use in your life Exit : Write two things that you learned today from the lesson . Starter: Which of these has the greatest mass and why? Practice: Compound: Element:
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