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Atomic Structure

QuestionAnswer
What are the 2 particles found in the nucleus of an atom? Protons and Neutrons
What particle in an atom changes the Element when you add or take them away? Protons
What particles contribute to the mass number of an atom? Protons and Neutrons
What particles add negative charge to an atom? Electrons
What particles add positive charge to an atom? Protons
What is the name of the center of an atom where the Protons and Neutrons are held? Nucleus
An _______________ has either gained or lost electrons. Ion
If you add an extra electron to an atom it's charge becomes more.... Negative
If you add an extra proton to an atom it's charge becomes more... Positive
The number of protons present in an atom affects: The Element, charge, and mass number
The _________________________ tells you the number of protons in one atom of an element. Atomic Number
The _________________________________ of an element is the average mass of an element's naturally occurring atom or isotopes. Atomic Mass
The mass number of an element is the total number of ____________________ and __________________ in the nucleus of the atom. Protons and Neutrons
You can calculate the number of neutrons in an atom by subtracting the number of _______________________ from the mass number. Protons
_________________________________ are atoms that have the same number of protons but a different number of neutrons. Isotopes
Oxygen-18 has 8 protons, 10 neutrons, and 8 electrons. It also can have 8 protons, 8 neutrons, and 8 electrons. Oxygen-18 is an example of an: Isotope
An Oxygen ion with 8 protons, 8 neutrons, and 10 electrons - will have a _______________ charge. Negative
An Oxygen ion with 8 protons, 8 neutrons, and 8 electrons - will have a _______________ charge. Neutral
An Oxygen ion with 8 protons, 8 neutrons, and 7 electrons - will have a _______________ charge. Positive
A __________________________ is when 2 or more elements are chemically bonded together. Compound
A _______________________ is when atoms or molecules are just physically mixed together. Mixture
Created by: Mrs.Accetta
 

 



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