Identifying Elements
Symbols in a compound
Guessing Chemical Formulas
Counting Atoms
Random
100
I found a paper that said C3H8O. What are elements that make this compound?
Carbon
Hydrogen and
oxygen
100
I have hydrogen, oxygen , and chlorine in my compound. What are the symbols of each of the elements present in the compound?
H, O, Cl
100
i have one hydrogen atom and chlorine atom what would be my chemical formula
HCl
100
How many atoms are in this compound
Three
100
I am nitrogen dioxide, I have one nitrogen atom and two oxygen atoms what is my chemical formula?
a. N1O2
b.NOx2
c. NO2
c. NO2
200
What are the elements present in a water molecule?
hydrogen
oxygen
200
I am a substance called calcium oxide with a formula of CaO.
a. Which elements are present in my compound?
b. How many atoms of each present in the compound?
a. Calcium and oxygen
b. 1 Calcium and 1 oxygen
200
I have one aluminum atom and three chlorine atoms which would be my chemical formula
a. AmCl3
b. AlCl3
c.Al1Cl3
b. AlCl3
200
How many atoms would be in glucose ( C6H12O6 )
24
200
How many atoms does this molecule have in total
ETHANOL (C₂H₆O)
9 atoms
300
Which elements are present in the chemical formula of acetone
Oxygen
Hydrogen
Carbon
300
which two elements and how many of them, are in this element?
Calcium and chlorine. 1 Calcium and 2 Chlorines
300
How many atoms are in this picture
3
300
How many silver atoms are in silver oxide (AG2O)?
2
300
The simplest structural unit made of more than one atom can be an element or a compound.
Molecule
400
What elements are present in this molecule
silver
nitrogen
oxygen
400
I am hydrogen peroxide, with a chemical formula of H2O2. How many atoms of Hydrogen and Oxygen are found in this molecule?
2 Hydrogen and 2 oxygen atoms.
400
What could be a possible chemical formula for hydrogen sulfide
a. H2S
b. HS
c. HS2
a. H2S
400
How many atoms would be in methane, which has a formula of CH4
5
400
What do you call the number after a chemical symbol which tells you the number of atoms of that element? (The "2" in H20)
Subscript
500
which elements are present in common table salt?
sodium and chlorine
500
TRUE OR FALSE
The first letter of every element symbol can sometimes be lowercase
False
500
I am magnesium oxide. What could be my chemical formula?
a. MgO
b. MaO2
c. Mg2O
c. MnO
a. MgO
500
How many hydrogen and chlorine atoms are there in total?
5
500
What do you call the number in front of a chemical formula that tells you the number of molecules in a substance? (the "2" in 2NaCl)
Coefficient