2.3 Elements and Compounds Flashcards
Flashcard
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Easy
Greer Yacavone
Used 7+ times
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26 questions
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1.
FLASHCARD QUESTION
Front
a pure substance that cannot be separated into simpler substances by physical or chemical means.
Back
element
2.
FLASHCARD QUESTION
Front
consists of one or two letters; the first letter is always capitalized, and the remaining letter is always lowercase.
Back
chemical symbol
ex: Na for sodium
3.
FLASHCARD QUESTION
Front
organizes the elements into a grid of horizontal rows called periods and vertical columns called groups or families.
Back
The periodic table
4.
FLASHCARD QUESTION
Front
Elements that have similar chemical and physical properties. The are the columns on the periodic table.
Back
groups (aka Families)
5.
FLASHCARD QUESTION
Front
Why is the periodic table called 'periodic'?
Back
The table is called periodic because the pattern of similar properties repeats from period to period.
6.
FLASHCARD QUESTION
Front
a substance made up of two or more different elements that are combined chemically in a fixed ratio.
Back
compound
7.
FLASHCARD QUESTION
Front
can be broken down into simpler substances by chemical means, often requiring external energy such as heat or electricity.
Back
compound
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