Test Review

Format Test – 55 Multiple Choice Questions – 2 Matching Questions – 2 Short Answer Questions – 2 Bohr Models – 4 Ionic Bonds – 4 Covalent Bonds

Physical and Chemical Properties Is the following statement a physical or chemical property? – Uses one of the 5 senses to identify substance. Is the following statement a physical or chemical property? – Chewing Food. Is the following statement a physical or chemical property? – Baking soda reacts with vinegar. Is the following statement a physical or chemical property? – Iron reacts with oxygen and forms rust P P C CP P C C

Physical and Chemical Reactions Is the following statement a physical or chemical reaction? – Produces a new substance Is the following statement a physical or chemical reaction? – Baking bread Is the following statement a physical or chemical reaction? – Freezing water into ice cubes Is the following statement a physical or chemical reaction? – Cutting a piece of paper in half C C P PC C P P

Periodic Table How many groups are there in the periodic table? How many periods are there in the periodic table? Which type of element is on the right of the metalloids? Which type of element is on the left of the metalloids? 18 7 Non- Metal Metal

Protons, Neutrons, Electrons What is the atomic mass of Chlorine? How many protons does Chlorine have? How many electrons does Chlorine have? How many neutrons does Chlorine have? To figure out the number of neutrons you take _______________ minus _____________ Mass - Number

Bohr Model How many electrons fill the first shell? How many electrons fill the second shell? Draw the bohr model for Chlorine. 2828

Lewis Dot Diagram Draw the Lewis Dot diagram for Chlorine

Elements, Compounds, Mixtures Which consists of only one type of atom? Which one consists of 2 or more elements bonded together? Which 2 can be broken down into smaller parts? Chlorine is an example of _______________. Air is an example of _____________________. Sugar is an example of ____________________. Granite is an example of _________________. E C C & M E M C M

Counting Atoms How many atoms of each element are in - 2Ca (H 2 PO 4 ) 2 – Ca = 2 – H = 8 – P = 4 – O = 16

Ionic Bonds Why do bonds form? – To obtain a full octet Ionic bonds TRANSFER electrons Ionic bonds form between NON-METAL and METAL. Draw the ionic bond for Magnesium and Chlorine

Covalent Bonds Covalent bonds SHARE electrons Covalent bonds form between NON-METALS and NON-METALS. Draw the covalent bond for Nitrogen and Hydrogen