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Chemisty 6th Grade

Ms. Caron

QuestionAnswer
Definition of Atom A tiny building block the basic unit of a chemical element.
Definition of Nucleus The core of an atom contains protons and neutrons
Definition of Proton Positively charged particle found in nucleus
Definition of Electron Negatively charged particle that orbits nucleus
Definition of Neutron a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen. A particle found in the nucleus has a neutral charge
Definition of Group * A vertical way to locate an element • Chemistry a combination of atoms having a recognizable identity in a number of compounds.
Definition of Metals a solid material that is typically hard, shiny, conduct heat, energy, with good electrical current and thermal conductivity (e.g., iron, gold, silver, copper, and aluminum, and alloys such as brass and steel)
Definition of Non-Metals Dull, don't conduct heat, energy or electrical current
Definition of Metalloids Properties of metals and nonmetals
Definition of Period A horizontal way of locating an element
Definition of a Mixture Easy to separate, created through physical change, retains the properties of substances it is made of - Trail Mix, raisins. Made up of elements, compounds or both
Definition of Compound Hard to separate, created by chemical change, does not retain the properties of the substance that make it up - example:salt. Made up of just elements.
Examples of Compound A pure substance that is made up of 2 or more elements joined together that are chemically bonded. Examples: Table salt, water, vinegar, baking soda, carbon dioxide
Examples of Chemical Change A reaction between 2 or more substances that produces one or more new substances with different properties.Examples of chemical properties are: heat of combustion, reactivity with water, PH, and electromotive force.
Examples of Physical Change Matter does not change the matter into another kind of matter.Examples are: color, smell, freezing point, boiling point, melting point, and density. Note that measuring each of these properties will not alter the basic nature of the substance.
Physical Changes color smell texture size shape state
Chemical Property examples Flammability: ability for something to burn Reactivity: when a new substance is produced
List 3 characteristics of a Compound 1. Hard to Separate 2. Created by chemical change 3. Does not retain the properties of substance that make it up
List 3 characteristics of a Mixture 1. easy to separate 2. created through physical change 3. retains the properties of substances it is made up of
List examples of common compounds Table Salt, Water, Vinegar, Baking Soda, Carbon Dioxide
Describe how the properties of a compound, like rust or table salt, are different from the properties of elements they are made from
Definition of molecule two or more atoms bonded together
Definition of compound to or more elements held together
Describe how the periodic table is organized
Be able to draw and label an atom and describe it's components
Be able to calculate densities of various items Volume=Length x width x height (cm3)
Created by: Ethan7
 

 



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