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18 Cards in this Set
- Front
- Back
- 3rd side (hint)
Atom
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The smallest particle of an element
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Any element on the periodic table is an atom. Ex- Ca (calcium)
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Atomic mass
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The mass of an atom in atomic mass units; the average mass of the atoms of an element
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The atomic mass of an element is the number of protons added to the number of neutrons.
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Atomic mass unit
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One twelfth the mass of the C-12 atom
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Atomic mass units are the way we measure elements mass. Carbon has 12 atomic mass units (amu).
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Atomic number
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The number of protons in the nucleus of an atom
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Carbon has an atomic number of 6. Therefore, it has 6 protons.
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Atomic symbol
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The mass number, atomic number , and charge is provided.
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The mass number of carbon is 12 which is on the top and 6 which is the atomic number on the bottom with a C next to it.
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Chemical symbol
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A notation using one to three letters to represent an element
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The chemical symbol of carbon is C.
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Electron
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An elementary particle with unit negative charge
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There is one negatively charged atom in a hydrogen element.
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Group
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The elements of a vertical column in the periodic table
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Cobalt, nickel, and copper are all part of the transition metal group on the periodic table.
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Isotope
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One of two or more atoms having the same number of Protons but different numbers of neutrons
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Carbon-12 is a molecule and carbon -14 the isotope has the same number of protons but different number if neutrons.
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Mass number
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The total number of protons and neutrons in an atom
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The mass number of helium is 4. Which means the protons added to the neutrons would equal 4.
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Metal
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An element that tends to lose electrons in chemical reactions
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Aluminum is metal on the periodic table
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Metalloid
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An element that has properties characteristic of a metal and a nonmetal
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Silicon and arsenic are both examples of metalloids on the periodic table.
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Neutron
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A neutral subatomic particle
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Neutral, uncharged particle in the nucleus of an atom.
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Non metal
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An element that tends to gain electrons in chemical reactions
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Carbon, nitrogen, and helium are elements on the periodic table that are non metals.
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Nucleus
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Positively charged central core of an atom, consisting of protons and neutrons
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The nucleus is made up of protons and neutrons.
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Periods
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Horizontal row on the periodic table
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There are seven periods on a periodic table.
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Proton
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Positive nucleon
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A proton is a positively charged particle that helps make up the nucleus.
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Subatomic particle
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A particle smaller than an atom
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Subatomic particles are usually found when atoms are split.
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