10/09/13 Starter: Paste Starter Here Practice: 1.Compound: 2.Element: 10/09/13 57 58 Molecules, Compounds and Elements Application Notes: Glue here when.

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Presentation transcript:

10/09/13 Starter: Paste Starter Here Practice: 1.Compound: 2.Element: 10/09/ Molecules, Compounds and Elements Application Notes: Glue here when done Connection: Ws: Elements and Compounds turn in when done Exit : Name some compounds that you know you use in your life

October 9, 2013 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. 1 Starter 2. Notes 3. Activity 4. Exit

DateLecture/ Activity/ Lab Page 9/25 Metal, Nonmetals, and Metalloids /26 Where’s Al? /27 Element Wanted Poster /30 Bohr Model Challenge /1 Periodic Table Notes/Puzzles /2 Periodic Table Chart /3 Test Review /8 Test Corrections /9 Molecules, Compounds, and Elements Table of Contents

Application: Atoms, Elements, Molecules, Compounds

Atoms 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.

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

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 NN

Elements An element is a substance made of only one kind of atom. Elements can be arranged to form new substances. NN N O O O O N

Molecule 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 Element

Molecules Atoms of elements often bond together to form molecules. Atoms of oxygen bond together to form oxygen molecules or O 2. O O O O O O OO

Element Molecules Hydrogen molecules are formed when 2 hydrogen atoms bond together. H H HH Sulfur molecules are formed when 8 sulfur atoms bond together. This molecule is made of only 1 kind of atom so it is considered an element. S S S S S S S S

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.

Sugar Compound The simple sugar glucose is a compound made up of 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms. O O O O O O C C C C C C

Glucose Glucose is a product of photosynthesis. Atoms are rearranged to produce oxygen and glucose. ++ O O O O O O O O O O O O +

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)

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 H2OH2O2- hydrogen and oxygencompound NO1-Nitrogen, 1-OxygenCompound FI 2 1-Fluorine, 2-IodineCompound O3O3 3-OxygenElement

10/09/13 Starter: Paste Starter Here Practice: 1.Compound: 2.Element: 10/09/ Molecules, Compounds and Elements Application Notes: Glue here when done Connection: Ws: Elements and Compounds turn in when done Exit : Name some compounds that you know you use in your life