I need you to answers each question in chemistry and EXPLAIN IT WHY.1Which of the following is a nonmetal? aNeptunium bZirconium cMagnesium dPhosphorus2Boron has luster but it has a poor electrical conductivitywhat type of an element it is? ametal bnonmetal bmetalloid dhalogen3Which of the following changes is chemical rather than physical? awater is boiled bwood is burned cglass is shattered daluminum foil is crumpled4which of the following has the highest ionization energy? aHe bNe cAr dKr5Which of the following ionic compounds is used as antiseptic and germicide? asodium chloride bcobalt chloride csilver nitrate dpotassium iodide6Which of the following has a V-shaped molecular geometry? aSO2 bBeCl2 cBCl3 dCH4
It can be used but I wouldn'tFirst off the cookies will stick and when you take them off the foil will ripSecondly it is not stableHow will you take it out of the oven? Do you have a broil pan? At the very least you could put the foil over thatspray it with PAM or something and then use that for stability.
No, I do it all the time.if you wanna save time and conveinience (whatever) spray the sheet pans first, let the cookies dry and they'll slide right off.
u'll have to use a lot of foil - maybe 3 layers of it so it won't tear up and ruin everything.
no too thin everthing will burn you could use a casserole pan if its metal or a pizza pan
1Periodic trends: Nonmetals are at the right side of the periodic table, Metalloids include B, Si, Ge, As, Sb, Te, and Po (forms a diagonal line)The rest are metals (including the lanthanoids and actinoids series)2Boron is a metalloid (as stated above)Metalloids share characteristics of both metals (luster) and nonmetals (poor electrical conductivity)3Wood is burnedC and D are obviously physical, because glass is still glass if it's broken, and aluminum foil is still aluminumChemical changes occur when a reaction takes place (in this case, substances in carbon change their chemical make-up when burnt)Water that is boiled becomes water vapor, but is still composed of water molecules4Ionization trendsHighest ionization energy is at the top-right, lowest at the bottom-leftThis is because of electron orbitals- elements near the top-right have high ionization energies (harder to pry an electron off it) because it's almost completed its octet to become a stable noble gas (every element's dream)Noble gases have the highest ionization energy because they are already content and stableSo, Helium5Silver nitrateThis one I'm not too sure about, but I just plugged into google and found itI suppose the ions Ag+ and NO3- make it hard for bacteria to survive, or somethingAll I know is that it's not A- who ever heard of sprinkling salt on a wound? 6Well, obviously C and D are out, because there's no plausible way to form a V-shape with thoseleaves you with BeCl2 and SO2This is tricky, because Be can only have two electron pairs (just gotta memorize that)Therefore, BeCl2 would be linearThat leaves SO2, whose lone electron pairs cause it to bend into a V-shape.
