How Is a compound different from a mixture?
it is made of one substance
It cannot be made of organic materials
It cannot be broken down
It cannot be separated by a physical change
I don't know
This formula shows the chemical reaction that occurs when the body breaks
down sugar. The products are carbon dioxide and water.
C6H12O6
+ 6O2
6CO2+ 6H2O
How many carbon atoms are needed in this reaction?
1
2
6
12
I don't know
The chemical formula for baking soda is NaHCO3
. How many sodium (Na) atoms are there in one molecule of baking soda?
1
2
3***
4
Which chemical formula shows 2 atoms of iron (Fe) and 3 atoms of oxygen (O)?
FeO3
Fe2O
Fe2O3****
Fe3O2
Please help me, I'm usually well at Science but right now I'm sick, I have a headache,and I'm having a lot of trouble on these questions.
Thanks,
~Anonymous
2 answers