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WorksheetsElements, Compounds & Counting Atoms
Total questions: 60
Worksheet time: 3570secs
How many atoms of Hydrogen (H) are in this compound
(a)
How many total atoms are in the compound C2H8O ?
(a)
How many atoms are there TOTAL in:
H2SO4
(a)
How many elements are there TOTAL in:
H2SO4
(a)
Which element has the greatest number of atoms? AgNO3
Silver (Ag)
Nitrogen (N)
Oxygen (O)
Equal in number (3)
Is this an element or a compound? CaSO4
Element
Compound
How many O are in Al₂(SO₄)₃
(a)
How many atoms are in Al₂(SO₄)₃
(a)
How many atoms of Sulfur (S) are in Al₂(SO₄)₃
(a)
How many elements are in Al₂(SO₄)₃
(a)
Which chemical formula has 21 atoms.
C9H8O4
H2SO4
CH3COCH3
H2SO3
How many atoms of oxygen (O) are there in the chemical formula H2O?
(a)
How many elements are in C6H12O6?
(a)
How many atoms are in C6H12O6?
(a)
How many atoms of Iron (Fe) are in this compound?
(a)
How many atoms are in this compound?
(a)
The number of sodium (Na) atoms in Na₂CO₃
(a)
The number of atoms in Na₂CO₃
(a)
Caffeine is represented here: C8H10N4O2 ... How many atoms are present?
(a)
How many Elements are in the compound C2H8O ?
(a)
How many total atoms are in the compound C2H8O ?
(a)
How many elements are in MgCl2?
(a)
How many elements are in CO?
(a)
How many atoms are there TOTAL in:
H2SO4
(a)
Which is the correct formula for:
three hydrogen (H)
one sulfur (S)
four oxygen (O)
How many Aluminum (Al) atoms are in Al2O3?
(a)
How many elements are in this chemical formula? NaHCO3
(a)
How many elements are present in this compound?
Mg2As3COHNi2
(a)
How many atoms are present in this compound?
Mg2As3COHNi2
(a)
How many atoms of Oxygen are in Fe(NO3)3 ?
(a)
How many atoms of Nitrogen are in Fe(NO3)3 ?
(a)
How many atoms are represented in this chemical formula? Fe2O3
(a)
Which chemical formula correctly displays 1 atom of nickel and 2 atoms of Fluorine?
Ni2F
Ni2F1
Ni1F2
NiF2
NaCl is the chemical formula for salt. Is NaCl considered a compound or an element?
element
compound
both
neither
We breathe oxygen. Its chemical formula is O2. Is this formula an element or a compound?
element
compound
neither
both
C3H5(NO3)3
C = 3, H = 5, N = 3, O = 9
C = 3, H = 5, N = 1, O = 9
C = 9, H = 15, N = 3, O = 9
C = 9, H = 15, N = 1, O = 3
How many different elements are present in H2COCH2?
(a)
HCl has how many elements?
(a)
Pure Substance
Element
Compound
Both Element and Compound
Represented by a chemical symbol
Element
Compound
Both Element and Compound
Represented by a chemical formula
Element
Compound
Both Element and Compound
made of atoms
Element
Compound
Both Element and Compound
Made of 2 or more elements
Element
Compound
Both Element and Compound
Number of elements in
Cl
(a)
Number of elements in
Al
(a)
Number of atoms in
Cl
(a)
Number of atoms in
Al
(a)
H2O
element
compound
CO2
element
compound
F2
element
compound
N2
element
compound
CH4
element
compound
Al
element
compound
Cl
element
compound
Fe
element
compound
Sr
element
compound
LiF
element
compound
CO
element
compound
How many hydrogen (H) atoms are in this formula?
CH3CH2Br
(a)
