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In terms of subatomic particles, electrons are positive, neutrons are negative, and protons are neutral.
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Valence electrons are those found in the innermost energy level of an atom.
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The first energy level of an atom can hold a maximum of 8 electrons.
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The atomic number of nitrogen is 7 and this gives the number of protons or neutrons in a neutral atom.
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Carbon atoms have an atomic number = 6 and a valence = 4.
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| True / False |
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Lewis diagrams show only valence electrons of an atom and not all electrons in all energy levels.
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Valence electrons are the electrons involved in chemical bonding.
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An ionic bond is formed when ions such as Na+ and Cl- share electrons equally.
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All of the following molecules have non-polar covalent bonds: H-H, Cl-Cl, H2O.
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According to the 2n2 equation, the 3rd energy level can hold a maximum of 18 electrons.
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| True / False |
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The isotope Carbon-14 has 2 more protons than Carbon-12.
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Hydrogen bonds can form between: H and O, H and N.
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-NH2 is called an amino group.
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CH3-OH would be an example of an aldehyde.
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Hydrocarbons only contain the elements: C, H, and O.
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| True / False |
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H+ ions are released by acids such as NaOH.
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OH- ions are released by bases and they increase the pH of a solution.
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A neutralization reaction is one in which an acid and a base react to produce a salt and alcohol.
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The greater the electronegativity difference between 2 atoms, the more likely the chemical bond formed will be ionic.
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CH3-O-CH3 is di-ethyl ether.
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