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Chemistry Vocabulary

What is a mixture in which two or more substances are uniformly spread out? Homogenous
What are two or more types of atoms that are bonded? Compound
What is only one type of atom? ( simplest form) Element
Name a pure substance made of Hydrogen and Oxygen. H20 or water
What is a substance that is only made of one element OR elements that are bonded? Pure substance
Second most reactive family/group of metals Alkaline Earth
Non-reactive gases with 8 valence electrons noble gases
Elements along the zig-zag line or staircase. metalloids
Number of rows or periods on the periodic table 7
Number of groups or families on the periodic table 18
Only metal that is a liquid at room temperature Mercury
Numbers on the periodic table that show the average of the protons and neutrons atomic mass
Number on the periodic table that shows the number of protons and electrons in a neutral atom. atomic number
Number that is sometimes on the periodic table that tells if an atom is usually neutral or not oxidation number
Capital letter that appears in squares on the periodic table Symbol
Most reactive Alkali Metal Francium
Most reactive Halogen Flourine
When an atom has a different mass ( number of neutrons), what is it called? Isotope
When an atom loses or gains an electron and is no longer neutrally charges, what it is called? ion
State of matter most commonly found on the periodic table solids
Created by: cyberchalk



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