Isotopes and Ions
Flashcard
•
Science
•
6th - 8th Grade
•
Hard
Barbara White
FREE Resource
Student preview
16 questions
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1.
FLASHCARD QUESTION
Front
Element Noun
[el-uh-muhnt]
Back
Element
A pure substance consisting of only one type of atom, distinguished by its unique atomic number.
Example: This diagram shows a single atom of the element Sodium, with its nucleus (Na) and electrons arranged in shells (2, 8, 1).
2.
FLASHCARD QUESTION
Front
Atom Noun
[at-uhm]
Back
Atom
The smallest particle of an element that retains the chemical properties of that element.
Example: An atom consists of a central nucleus (containing protons and neutrons) surrounded by electrons orbiting in shells. The number of each particle determines the atom's properties.
3.
FLASHCARD QUESTION
Front
Proton Noun
[proh-ton]
Back
Proton
A stable, positively charged subatomic particle found in the nucleus of an atom that determines the atomic number.
Example: This diagram shows a proton, the positively charged particle, at the center of a simple hydrogen atom, which also has one orbiting electron.
4.
FLASHCARD QUESTION
Front
Neutron Noun
[noo-tron]
Back
Neutron
A subatomic particle with no electrical charge, located in the nucleus of an atom alongside protons.
Example: This diagram shows a neutron as a neutral particle found inside the atom's central nucleus, alongside protons, with electrons orbiting outside.
5.
FLASHCARD QUESTION
Front
Electron Noun
[ih-lek-tron]
Back
Electron
A stable, negatively charged subatomic particle that occupies orbitals surrounding the atom's nucleus.
Example: This diagram shows a negatively charged electron orbiting the central nucleus of an atom, which contains positively charged protons and neutral neutrons.
6.
FLASHCARD QUESTION
Front
Nucleus Noun
[noo-klee-uhs]
Back
Nucleus
The dense, positively charged central region of an atom, composed of protons and neutrons.
Example: The nucleus is the central part of an atom, containing positively charged protons and neutral neutrons, as shown in this Lithium atom model.
7.
FLASHCARD QUESTION
Front
Atomic Number Noun
[uh-tom-ik nuhm-ber]
Back
Atomic Number
The number of protons in an atom's nucleus, which uniquely identifies a chemical element.
Example: This diagram of an oxygen atom shows the nucleus contains 8 protons, which defines its atomic number as 8.
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