Symbols in a compound
Guessing Chemical Formulas
How many atoms are in the compound?
100
Which elements are in NaCl?
Sodium (Na) and Chlorine (Cl)
100
I have one hydrogen atom and one chlorine atom. What is my chemical formula? (Hint: Hydrogen goes first)
HCl
(Fun fact--this is Hydrochloric Acid)
100
How many atoms are in this compound?
Three
200
I am a substance called calcium oxide with a formula of CaO. Which elements are present in my molecule?
Calcium and oxygen
200
I have one aluminum atom and three chlorine atoms. What is my chemical formula?
a. AmCl3
b. AlCl3
c.Al1Cl3
b. AlCl3
200
How many atoms are in glucose (C6H12O6 )?
24
(Add up the numbers in the subscript)
300
Which elements are in Calcium Chloride (CaCl2)?
Calcium and chlorine
300
How many atoms are in this molecule?
3
300
How many silver atoms are in silver oxide, which has a chemical formula of Ag2O?
2
400
I am hydrogen peroxide. I have two hydrogen atoms and two oxygen atoms. What are the symbols of the elements in me?
O and H
400
What could be a possible chemical formula for hydrogen sulfide?
a. H2S
b. HS
c. HS2
a. H2S
400
How many atoms are in methane, which has a formula of CH4?
5
1 atom of Carbon
4 atoms of Hydrogen
500
TRUE OR FALSE
Sometimes the first letter of element symbols are lowercase
False
500
I am magnesium oxide. I have one magnesium atom and one oxygen atom. What could my chemical formula be?
a. MgO
b. MaOx
c. MmO
a. MgO
500
How many hydrogen and chlorine atoms are there in total?
5