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Elements and Compounds
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Fe is the _____________ for Iron.
Symbol
The symbol for an element can be found on the ______________ ______________.
Periodic Table
An_______________________ cannot be broken down into any other substance.
Element
What did Dmitri Mendeleev do?
Arranged elements into the periodic table.
Is the picture a solid, liquid, or gas?
gas
Does the picture show a solid, liquid, or gas?
solid
Does the picture show a sollid, liquid, or gas?
liquid
Mixtures can be easily __________.
Separated
A ______________ is a combination of many different elements not chemically combined
Mixture
H2O has one____ and two _____.
O H
To count the number of elements in a molecule you count the number of _______________ letters.
Capital
A ________________ is a pure substance formed when one or more elements have chemically combined to form a new substance. Ex. NaCl Salt
Compound
An ____________________ is a pure substance that cannot be broken down into any other substance. Ex. Gold Au
Element
The smallest particle in a chemical element or compound is called a __________________.
atom
A _____ _____ has a definite and unchanging composition.
Pure substance
Matter can be solid, __________, or gas.
Liquid
__________ is everything around you.
Matter