Top 10k strings from Structure, Bonding and Properties (1982)(Calpac Educational Software).z80 in <root> / bin / z80 / software / Sinclair Spectrum Collection TOSEC.exe / Sinclair ZX Spectrum - Utilities & Educational / Sinclair ZX Spectrum - Utilities & Educational - [Z80] (TOSEC-v2007-01-01) /
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7 o$="true ":
6 t$="false":
4 t$="true ":
3 o$="false":
3 e$="not correct":
2 t$="true "
2 o$="true "
1 s$="true "
1 s$="false"
1 r$="not correct"
1 r$="correct "
1 overall charge
1 mass number
1 have different masses.":
1 f$="true "
1 delocalised
1 atomic number
1 as a consequence of
1 annot explain
1 Second statement
1 Question ";n''"
1 Melting points/degrees Celsius:
1 Is the second statement true?
1 Is the 2nd statement a correct explanation of the 1st?
1 First Statement"
1 ;"Type y or n.
1 ;"Type e for explanation/comment otherwise press the ENTER key."
1 ;"Type 1, 2 or 3."
1 ;"Press the ENTER key to continue."
1 ;"Is the first statement true?"
1 ;"2"''"Such substances usually dissolvewell in organic solvents."''"The iodine molecules are attrac-ted to the solvent molecules by van der Waals forces, and so theiodine dissolves.":
1 ;"1. A revision tutorial"''" 2. A simple test"''" 3. A copy of the questions"'"
1 ;" Structure, Bonding and
1 ."''"Therefore graphite
1 )+("Well done."
1 )+("Very good."
1 )+("Good."
1 ("Excellent."
1 ''''" Structure, Bonding and
1 '"You correctly answered ";s;" out"'"of 10 questions."''
1 & Educational Software
1 "correct "
1 "Your very low score indicates a poor understanding of this topic"
1 "Your answer was wrong."
1 "You were wrong."
1 "You were wrong. "''l$
1 "You need to spend more time on this topic."
1 "You need to read through your notes and text-book again,"'"and then re-run this program."
1 "Well done, you were right.":
1 "Well done, you were right."
1 "Two different elements cannot have the same atomic number."''"The atomic number of neon is 10,and that of sodium is 11.":
1 "There are no common solid"'"
1 "The sodium ion and the neon atomhave the same electron"'"configurations":
1 "The sodium ion and the neon atomhave the same atomic number":
1 "The only solid elements which"'"conduct electricity are metals":
1 "The nitrogen atom has only threeelectrons in the outer shell":
1 "The nitrogen atom can form threecovalent bonds":
1 "The magnesium atom has 12"'"protons in the nucleus, and 12 extra-nuclear electrons."''"Its electron configuration is 2,8,2"''"The two outer shell electrons are easily given up."''"This results in the formation of an ion with two positive"'"charges."
1 "The magnesium atom forms an ion with two positive charges":
1 "The magnesium atom forms an ion with two positive charges"'"
1 "The iodine atom has one less"'"outer shell electron than the"'"following rare gas":
1 "The covalent bonds between the atoms of non-metals are rather weak":
1 "The chlorine atom easily loses one electron to give a rare gas electron configuration":
1 "The chloride ion has a single negative charge.":
1 "The Halogens (fluorine,"'"chlorine, bromine and iodine) all form ions with a single"'"negative charge."'''" -
1 "Solid sodium chloride consists of sodium ions and chloride ionsheld together by electrostatic attraction."''"The regular arrangement of ions is called an ionic crystal"'"lattice.":
1 "Solid sodium chloride conducts electricity":
1 "Sodium configuration: 2,8,1"''"Neon configuration: 2,8"''"Sodium easily loses its one"'"outer shell electron to give a configuration of 2,8 - the same as that of neon."''
1 "Sodium chloride is an ionic"'"solid at room temperature and pressure":
1 "Oxygen is a gas at room"'"temperature and pressure":
1 "Oxygen consists of small,"'"diatomic molecules:"''," O"'," 2"''"The forces of attraction betweenthese molecules are very weak."''"As a result, oxygen is a gas at room temperature and pressure.":
1 "Oxygen can form both ionic and covalent bonds":
1 "Oxygen (2,6) can get a rare gas electron configuration by:"'''"(1) Gaining two electrons to"'"form the oxide ion as in"'"magnesium oxide."''"(2) Forming two covalent bonds as in water.":
1 "Non-metals which exist as small molecules do have low melting points (e.g. nitrogen and"'"chlorine)."''"However, non-metals with giant covalent lattice structures havevery high melting points"'"(e.g. carbon and silicon)."''"
1 "No, You were wrong.":
1 "Nitrogen is in Group 5B of the Periodic Table, It has
1 "Nitrogen has the electron"'"configuration 2,5."''"If it gains a share in three"'"more electrons, it will have a configuration like that of neon (2,8)."'"It can do this by forming three covalent bonds, as in the"'"ammonia molecule:"'
1 "Most carbon atoms have 6 protonsand 6 neutrons in the nucleus (6+6 gives a
1 "Magnesium is in Group 2A of the periodic table":
1 "Magnesium is in Group 2A of the Periodic Table because it has similar physical and chemical properties to the other elementsin the group."''"The Group 2A elements are:"''"
1 "Iodine is an element in Group 7Bof the Periodic Table."''"It has seven outer shell"'"electrons - one less than the rare gas xenon, which has eight.":
1 "Iodine exists as small covalent molecules (I )."'
1 "Iodine dissolves well in organicsolvents":
1 "In graphite the carbon atoms arecovalently bonded together in sheets."''"Each carbon atom uses three"'"electrons to form normal"'"covalent bonds to its neighbours"''"The forth outer shell electron of each carbon atom is free to move and carry an electric"'"current - it is
1 "Graphite is a non-conductor of electricity":
1 "Good, your answer was right."
1 "Good, you were right."''l$
1 "Each element has its own atomic number."''"All carbon atoms have 6 protons in the nucleus and 6 electrons outside it."''"Therefore all carbon atoms"'"have an atomic number of 6.":
1 "Do you want:";
1 "Do you want to run the program again?"
1 "Do you want to go through the questions in which you made"'"mistakes?"
1 "Covalent bonds are
1 "Chlorine (2,8,7)
1 "Both statements are true, and the 2nd is a correct explanationof the 1st."'l$'
1 "Atoms of different isotopes of an element have different"'"masses."''"Although all carbon atoms have 6 protons, they can have"'"different numbers of neutrons.":
1 "Although both statements are"'"true, there is no simple"'"connection between them."'''"Iodine dissolves well in organicsolvents"'"
1 "All non-metals have low melting points.":
1 "All metallic elements contain mobile electrons which act as charge carriers."''"Graphite is a form of the
1 "All atoms of carbon have the"'"same mass":
1 "All atoms of carbon have the"'"same atomic number":
1 "''''"The magnesium ion still has"'"12 protons in the nucleus, but it only has 10 electrons."''''" charge on protons +12"'" charge on electrons -10"''"
1 "''"its atoms can attain more stableelectron configurations by"'"either gaining or sharing"'"electrons.":
1 "'"the inter-molecular attractions between the iodine molecules andthe solvent molecules can over- come the weak forces which hold the iodine molecules together inthe iodine crystal.":
1 "'"nitrogen -210"'"chlorine -101"'"carbon
1 "'"its atomic structure and"'"electron configuration."'''"The Periodic Table is simply a list of the elements arranged in a special way."''"A list cannot
1 " The second statement was ";t$;" ":
1 " The first statement was ";o$;" ":
1 why an"'"ion has two positive charges.":
1 which conduct"'"electricity."''"This is because solid compounds do not contain
1 themolecules, chlorine is a gas at room temperature and pressure.":
1 oxygen forms both ionic and covalent bonds."'''"Oxygen forms both ionic and"'"covalent bonds"''"
1 outer shell electrons."'''"Nitrogen configuration: 2,5":
1 one"'"electron giving a configuration like that of argon(2,8,8)."'''"
1 on your printer?";
1 of 12).These are atoms of the isotope carbon-12."''"Some carbon atoms contain"'"6 protons and
1 neutrons"'"(6+8 gives a mass number of 14).These are atoms of the isotope carbon-14."''"This means that carbon atoms
1 is not the reason why
1 is equal to"'"the number of protons in the"'"nucleus of the atom."''"It is also equal to the number of electrons around the nucleus of the neutral atom.":
1 f$="false"
1 charge"'"carriers."''"However, sodium chloride does conduct electricity when melted or dissolved in water."''"This is because its ions are"'"then free to move and carry"'"charge.":
1 bonds."''"The chlorine molecule consists of two atoms strongly held"'"together by a covalent bond."''"However, as there are only weak van der Waals forces
1 a"'"conductor of electricity.":
1 a gas at rtp,but this c
1 The fact that
1 Sr strontium
1 Ra radium
1 Properties."''"
1 Properties."
1 Please type y
1 Mg magnesium
1 J J WARREN 1982
1 Ca calcium
1 Be beryllium
1 Ba barium
1 BSc ARCS Cert Ed
1 3727 (sublimes)"'"silicon 1410":
1 1982 J J Warren
1 -"'" Cl + e
1 -"'" Na
1 metal carbon."''"Although graphite has a giant covalent lattice structure, it does have mobile electrons. It is a fairly good conductor of electricity."''"So at least one non-metallic"'"element conducts electricity.":
1 Na + e"''" 2,8,1
1 Mg + 2e"'"
1 Cl"''"2,8,7