Compounds And Elements Question Preview (ID: 41346)
Compounds And Elements.
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NaCl is the chemical formula for which of the following?
a) Carbon Dioxide
b) Water
c) Table Salt
d) Potassium Chloride
H2O is the chemical formula for which of the following?
a) Carbon Dioxide
b) Water
c) Table Salt
d) Potassium Chloride
Au is an element. We know this because...
a) It has one capital letter
b) there are two letters
c) That is false. It's a compound.
d) None of the above
What is CO2 classified as?
a) element
b) compound
c)
d)
O4 is classified as?
a) element
b) compound
c)
d)
When determining if something is an element or a compound, the easiest thing to do is what?
a) Look for numbers
b) Count the total amount of letters
c) There is no difference between an element and compound.
d) Look for more than one capital letter.
In O4, the 4 tells you what?
a) How many different elements there are.
b) How many atoms of an element are in the molecule.
c) How many compounds there are.
d) How many electrons there are.
C6H12O6 is the chemical formula for glucose. How many elements make up glucose?
a) 3
b) 24
c) 6
d) 12
The chemical formula for chalk is CaCO3. How many elements make up chalk?
a) 1
b) 5
c) 4
d) 3
The chemical formula for baking soda is NaHCO3. How many elements make up baking soda?
a) 3
b) 4
c) 5
d) 8
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