Archive for October, 2009

Chemistry Test Tomrrow I Really Need Help Finding A Really Easy Cheating Way To Write Chemical Formulas Help?

Monday, October 26th, 2009

I have a chemistry test tomrrow and need help i dont know how to write chemical formulas iv went on some sites and they dont help i need a cheating or easy ways to write chemiccal formulas a way thats easy i really need help.

Which Of The Following Chemical Formulas Represent Ionic Compounds ?

Tuesday, October 20th, 2009

Which of the following chemical formulas represent ionic compounds ?
a) SF6
b) CaO
c) CCl4
d) NH3
e) H2O
f) Al2(SO4)3
There could be more than one answers here.

How Do You Write Chemical Formulas Based On Chemical Names?

Wednesday, October 14th, 2009

I’m not sure how to take the chemical name and change it into the chemical formula. I don’t know how convalent and ionic bonding add into the mix, and the periodic table really confuses me!
Here’s a couple examples:
1.magnesium carbide
2.aluminum chloride hexahydrate
3.carbonic acid

How Do I Find Chemical Formulas?

Thursday, October 8th, 2009

For example ‘Hydrochloric acid’ how would i determine its chemical formula?
any links regarding chemical formulas would be of help.
also other questions: what is a polyatomic ion? and in the chemical formula Cu(No3)2 – why doesn’t Cu have 2 atoms?

Naming And Writing Chemical Formulas For Ionic And Molecular Compounds?

Monday, October 5th, 2009

I’m not sure how to come up with correct examples. So if you can help me please…
name and write the chemical formulas for simple ionic and molecular compounds including those that contain the polyatomic ions: ammonium, carbonate, hydroxide, nitrate, phosphate and sulfate.
THANK YOU!

How Are The Chemical Formulas Of Photosynthesis And Cellular Respiration Similar Or Different? ?

Friday, October 2nd, 2009

a The two formulas are opposites of each other.
b The chemicals involved in each process are different.
c Glucose is the starting molecule for both processes.
d The two formulas are identical.