Atomic Structure
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| How are elements abbreviated in chemical shorthand? | by a Symbol. One or two letter. The first letter is always a capital. If there is a second letter it is always lower case.
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| What is an Atom? | The basic building block of all matter.
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| What is an element? | A substance that contains only one type of Atom. A pure substance.
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| What are the three particles in an Atom? | Protons, Neutrons & electrons.
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| What is the electrical charge of a Proton? | Positive (+)
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| What is the electrical charge of a neutron? | Neutral (o)
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| What is the electrical charge of an electron? | Negative (-)
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| What is the nucleus of an atom? | The center. The part of the atom with the most mass.
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| What particles are in the nucleus of an atom? | Protons & Neutrons.
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| What is the meaning of the Atomic Number? | Atomic Number = # of Protons.
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| What is the meaning of the Atomic Mas #? | The Atomic Mass number = # of Protons + # of Neutrons.
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| On the Periodic Table where can you find the Atomic Number? | The large number at the top of each square.
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| On the Periodic Table where can you find the Atomic Mass number? | The Atomic Mass # in the decimal number at the bottom of each square.
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| Where are the electrons of an atom located? | Outside of the nucleus in an electron cloud.
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| Which atomic particle determines the properties of an element? | Electrons
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| How much mass do the atomic particles have? | Protons & Neutrons contain most of the mass of the atom. The electrons are so small we cannot measure their mass. Electron mass is counted as zero.
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| What is an Isotope? | An atom that has a different from normal # of neutrons.
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| What is an Ion? | An atom with an electric charge.
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| How does an atom gain an electrical charge? | It gains or loses one or more electrons.
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| How does a normal atom maintain a total neutral charge? | Equal numbers of Protons (+) and Electrons (-).
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| From the Periodic Table, how do you find the # of Neutrons in an atom? | # of Neutrons = Atomic Mass - Atomic Number. or Atomic Mass - # of Protons.
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| Do we know the exact location of electrons in the electron cloud? | No. The exact location of electrons cannot be known for certain. We can only predict the approximate & probably location of the electrons in various shell energy levels, from closest to the nucleus to further and further from the nucleus.
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| How do you find the # of Protons on the Periodic Table? | The Atomic Number is the large # at the top of each square.
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| How do you find the Atomic Mass on the Periodic Table? | The Atomic Mass is the decimal number at the bottom of each square.
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| What is a Shell Energy Level? | The approximate location of electrons in the electron cloud surrounding the atomic nucleus.
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Created by:
kastega
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