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Joshua Rivera

Across
Has uniform composition throughout
Made up of one type of atom
Cannot be broken down into a simpler substance by ordinary chemical changes
Compounds and mixtures are made from approximately ___ elements
Compounds are bonded by _____ means
How many groups on the Periodic Table of Elements
Two or more substances that do not combine chemically but remain the same individual substances
Do not share same chemical properties
Example of a element
What are vertical columns called on the Periodic Table of Elements
How many rows in the Periodic Table
Mixtures are separated by ____ means
Example of a compound
The most reactive group of metals
Creator of the Periodic Table of Elements
What are horizontal rows on the Periodic Table of Elements called
They have a positive charge
They have a negative charge
Down
Share similar chemical properties
Don't have uniform composition
The most reactive group of nonmetals
Made up of two or more different types of atoms bonded together chemically
The family that does not react
Example of a mixture
They are neutral or have no charge