How many covalent bonds does each carbon atom in diamond form?23452How many covalent bonds does each carbon atom in graphite form?53423Why can graphite conduct electricity?Because it is a metalBecause it has delocalised electrons that can move along between its layersBecause it has a very high melting pointBecause all the electrons are fixed in place within the covalent bonds4Why can diamond not conduct electricity?Because all the electrons are delocalisedBecause all the electrons are fixed in place within the covalent bondsBecause it has a very high melting pointBecause it is not a metal5Why do diamond and graphite have such high melting points?Because they are so bigBecause they have very strong intermolecular bondsBecause they have delocalised electronsBecause they have very strong covalent bonds6Which statement best explains why graphite is soft?The covalent bonds are easy to breakIt can conduct electricityIt has a rigid structureThe layers of carbon atoms can slide over each other

Despite being composed entirely of carbon atoms, diamond and graphite exhibit distinct structures and properties due to their unique atomic ______ its tetrahedral structure where each carbon atom bonds to four others, diamond emerges as the hardest known material, while in contrast, graphite, comprised of layers of carbon atoms linked in hexagonal patterns but weakly bonded to other layers, displays both hardness and slipperiness, making it an ideal choice for pencil lead.15 Mark For Review15Which choice completes the text so that it conforms to the conventions of Standard English?A) arrangements withB) arrangements, withC) arrangements. WithD) arrangements and with

Identify which feature of graphene is responsible for its high electrical conductivity?2D structureStrong covalent bondsNon-polar bondsDelocalised electronsReport feedback or error

How many bonds can a carbon atom form?A.4B.1C.3D.2

Why are graphite and diamond so different from each other, even though they are made of the same element? (choose the best answer)They were found at different locationsThey are made of different components The atoms are arranged differently

6. Diamond is a bad conductor of electricity because:A. It has a tight structure B. It has a high densityC. It has no free electrons D. It is transparent to light7. Mixture containing 0.01 mole/300cm3 of NH4Cl and 0.1 mole/400cm3 of NH4OHhaving pKb = 5 has pH of:A. 4.00 B. 4.12C. 9.88 D. 10.008. 5g of urea (M.wt = 60) is dissolved in 250 cm3 of its solution. Concentration ofsolution will be:A. 5 % w/w B. 5 % v/wC. 0.34 M D. 0.34m