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Gorman 1st 6 weeks

Study Guide for 1st SW test

QuestionAnswer
What is the center of the atom called? Nucleus
What subatomic particle determines the identity of an atom? Proton
What two subatomic particles have the same mass and are located in the nucleus Proton and Neutron
What two subatomic particles contribute to the overall charge of an atom? Protons and electrons
What particle is positively charged? Proton
What particle has a negative charge? Electron
What is the name of group 1 on the periodic table? Alkali Metals
What is the name of group 2 on the Periodic Table? Alkaline Earth Metals
If an element has 7 protons what is it? Nitrogen
Why is hydrogen placed with the alkali metal family? Hydrogen has 1 valence electron
What is the name of group 17? Halogens
What is the magic number of valence electrons an atom wants to have? 8
What is the mass number of carbon? 12
If a scientist wants to use an element like sodium but wants to use something with a higher atomic mass, which element could he pick? Potassium, rubidium, cesium, or francium
What are the characteristics for metals? Shiny, good conductors of heat and electricity, malleable, ductile
Where are metals located on the periodic table? Left and center
What are the characteristics of non-metals? Brittle, dull, usually liquid or gas, poor conductors of heat and electricity
Where are non-metals located on the periodic table? right side
What are metalloids? Elements that share characteristics with both metals and non-metals
Where are metalloids located on the periodic table? Between metals and non-metals - along stair case line
List examples of physical properties. Luster, malleable, ductile, state of matter, solubility, color, shape, texture, size, density, mass
List examples of chemical properties. Flammibility, reaction with air, reaction with water, reaction with vinegar
What has more in common - groups or periods? Groups
What do periods have in common? Same number of electron shells
What do groups/families have in common? Similar chemical and physical properties
What happens when chlorine combines with sodium? Soduim loses an electron to chlorine - they combine to form sodium chloride NaCl
Created by: hgorman