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Chemical Building Blocks, Section 1-3
Particles of Matter
10
Chemistry
7th Grade
12/15/2009

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Cards

Term
What is the smallest particle of an element?
Definition
an atom
Term
In Greek, what does “atom” mean?
Definition
uncuttable
Term
Can atoms be broken down into smaller pieces?
Definition
No
Term
All atoms are exactly alike if you are talking about which atoms?
Definition
atoms that make up the same element
Term
When 2 or more DIFFERENT elements combine, what do they form?
Definition
a compound
Term
Do any of the elements have the same mass?
Definition
NO, each element has a different mass.
Term
The masses of the elements in a compound...
Definition
are in a CONSTANT ratio
Term
Define “molecule.”
Definition
when 2 or more atoms are joined together; the smallest unit of a compound
Term
Define “chemical bond.”
Definition
a force that holds atoms together
Term
Name the tool that shows what atoms look like.
Definition
A scanning tunneling microscope
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