Chemistry (Topic 1)
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Last updated 8:26 PM on 11/20/22
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48 Terms
1
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+
protons charge
2
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-
electrons charge
3
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0
neutrons charge
4
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1
protons mass
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negligible
electrons mass
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1
neutrons mass
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nucleus
protons location
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in shells, orbiting nucleus
electrons location
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nucleus
neutrons location
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a form of an atom with the same number of protons but different number of neutrons
what is an isotope?
11
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increasing atomic number
how is the modern periodic table arranged?
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increasing atomic mass
how was Mendeleev's periodic table arranged?
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left hand side
where are metals found on the periodic table?
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right hand side
where are non-metals found on the periodic table?
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middle
where are transition metals found on the period table?
16
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groups
what are the columns called on the periodic table?
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periods
what are the rows called on the periodic table
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gains or loses electrons
how does an element become an ion
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to be stable + have a full outer shell
why does an element become an ion
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cation
what is a positive ion called
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anion
what is a negative ion called
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loses electrons
how does an ion become positive
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gains electrons
how does an ion become negative
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how many electrons are in the outer shell
how does the group number help you know the ion it will make?
25
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lattice
what word describes the arrangement of ions in an ionic compound?
26
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strong electrostatic forces
name the force between ionic bonds
27
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ide
if a compound has 2 elements what will its name end in?
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ate
if a compound has 3 or more elements what will its name end in?
29
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high, hard to overcome the strong electrostatic forces
what is the boiling/melting point of an ionic compound? why is it this?
30
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the ions are not free to move
do ionic compounds conduct electricity? why is this?
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a metal and non-metal
what is an ionic bond formed between?
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a non-metal and a non-metal
what is a covalent bond formed between?
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a molecule
what is formed as a result of covalent bonds?
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to become stable, have a full outer shell
why do atoms share electrons?
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weak intermolecular forces?
what forces are between covalent bonds?
36
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low, not a lot of energy is needed to overcome the weak intermolecular forces
what is the boiling/melting point of a simple covalent bond? why is this?
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no, it has no free moving electrons
can a covalent bond conduct electricity? why is this?
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one or more physical forms of an element that occurs in the same physical state
what is meant by the word allotrope?
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4
how many covalent bonds per atom does diamond have?
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3
how many covalent bonds per atom does graphite have?
41
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cutting tool, it is strong
what is one use of diamond? why is this?
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electrode, free moving electrons
lubricant, layers can slide over each other
lubricant, layers can slide over each other
what is one use of graphite? why is this?
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a single layer of graphite
what is graphene?
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screen for phones, can conduct electricity so powers phones
what is one use of graphene? why is this?
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carbon
what element is a fullerene made from?
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carbon
what element is diamond, graphite and graphene made of?
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buckyball, nanotubes
what are 2 examples fullerenes?
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lubricant
what is one use of a buckyball?
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Flashcards (92)