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Chemistry Chapter 4

Summative Assessment

QuestionAnswer
Chemistry The study of stuff (matter)
Matter Anything that has a mass and takes up space
Atom The building block of matter
Nucleus The center of the atom and what holds the protons and neutrons
Proton A positive charge
Neutron No charge
Electron A negative charge
Energy Levels ( electron shells)
Molecule
The periodic table an organized chart that is made up of all the atoms
Atomic number The number of protons in an atom
Atomic Mass The average mass of one atom
Atomic Symbol A one or two letter symbol of an atom
Element A material that is made up from only one atom
Periods The rows in a periodic table
Groups/Families The columns in a periodic table
Valence shell The outermost shell
Valence electron Electrons in the valence shell
Stable atom An atom that has a full valence shell
Unstable atom An atom that's valence shell is not full
covalent bond When
What is the maximum amount of electrons in level 1? 2
What is the maximum amount of electrons in level 2? 8
What is the maximum amount of electrons in level 3? 8
What does the atomic number represent? How many protons there are
What attracts and what repels? Opposite charges attract and like charges repel.
Created by: Ebeers
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