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Chemistry Vocab.

Unit 1, Section 2

Element A unique substance that cannot be broken down into simpler substances through chemical processes
Compound A pure substance that is a chemical combination of two or more elements in a fixed ratio.
Chemical Formula A combination of symbols and subscripts that indicates the number and types of elements in a compound.
Phase The physical form a substance is in, such as solid, liquid, or gas. Phase is greatly influenced by temperature.
Aqueous A substance is aqueous when it is dissolved in water.
Law of Conservation of Mass The law states that mass cannot be gained or lost in a chemical reaction, matter cannot be created or destroyed
Atomic Mass The mass of a single atom (or isotope) of an element
Atomic Number The consecutive whole numbers associated with the elements on the periodic table.The atomic number is equal to the number of proton in the atomic nucleus of an element.
Transition Elements Elements in group
Lanthanides and Actinides The two rows of 14 elements each that are placed separately at the bottom of the periodic table
Metals Excellent conductors, which are shiny and flexibale which are found on the left
Non-Metals Poor conductors which are dull and brittle and found on the right side
Metalloids The elements between the metals and non-metals. They are found along the stair-step line.
Created by: LanaB



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