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:  

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.

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

Table of Contents Date Lecture/ Activity/ Lab Page 10/2 Metals, Nonmetals, and Metalliods 53-54 10/5 Comparing Elements Lab 55-56 10/6 Periodic table Graphic Organizer 57-58 10/7 Coloring the periodic table 59-60 10/8 Periodic Puzzles 61-62 10/12 Bohr Model Challenge 63-64 10-13-14 Wheres Al 65-66 10/15 Density 67-68 10/16 Density Lab 69-70 10/19 Molecules, Compounds, and Elements 71-72

Application: Atoms, Elements, Molecules, https://www. youtube

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.

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

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

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

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

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.

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 C C C C C C

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

Covalent Bond formed when two atoms share one or more electron pairs; usually non-metals Draw picture

                                                                          A water molecule is an example of the single covalent bond between oxygen and hydrogen. Draw picture

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

the result of the attraction of oppositely charged ions (between metal and non-metal-transfer of electrons) Draw picture

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

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: