
CCEA Chemistry Unit 1 Definitions
Flashcard
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
Jillian Rooney
Used 2+ times
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72 questions
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1.
FLASHCARD QUESTION
Front
Atom
Back
A central positively charged nucleus containing protons and neutrons (most of the mass) surrounded by orbiting electrons in shells.
2.
FLASHCARD QUESTION
Front
Atomic number
Back
The number of protons in an atom.
3.
FLASHCARD QUESTION
Front
Atomic mass
Back
The total number of protons and neutrons in an atom.
4.
FLASHCARD QUESTION
Front
Isotope
Back
Atoms of an element with the same atomic number but a different mass number, indicating a different number of neutrons.
5.
FLASHCARD QUESTION
Front
Compound
Back
Two or more elements chemically combined.
6.
FLASHCARD QUESTION
Front
Ion
Back
A charged particle formed when an atom gains or loses electrons.
7.
FLASHCARD QUESTION
Front
Molecular ion
Back
A charged particle containing more than one atom.
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