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Chp. 4-6, 10 IPS 9th

Vocab for end of 1st semester

TermDefinition
Periodic Table Organized chart of elements, similar properties in vertical groups
Nobel Gas Unreactive gases, last column of periodic table
Filter Used to separate insoluble solids from liquids
Solvent Substance (liquid) that dissolves something else (solid)
Mixtures Two or more substances mixed yet retain their original properties, Can be separated by their properties
Pure Substance (Elements or Compounds)-- can’t be put together or broke apart by ordinary methods.
Law of Constant Proportions Elements combine in a fixed mass ratio when forming compounds.
Compounds Pure substances that are combinations of two or more elements with unique characteristic properties Can be broke down.
Elements Pure substance that can’t be broken down even when reacted with acids, electricity etc.
Density Mass divided by Volume (g/cm3)
Significant Digits All known numbers in a measurement plus one estimated digit.
Alkali Metals Found in first column on periodic table, very reactive metals.
Law of Conservation of Mass Mass does not change in a closed system even in a chemical reaction.
Created by: bdudek
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