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WorksheetsStoichiometry: Chemistry for Massive Creatures
Total questions: 20
Worksheet time: 10mins
Chemistry helps us understand the biggest stuff in the universe by helping us understand ___
the most massive
the tiniest
the most colorful
the least plentiful
What is the molecular formula for sucrose, the common table sugar put in tea?
C12H22O11
C11H6O12
C12H6O6
C6H11O6
The science of measuring chemicals that go into and come out of any given reaction is called ___
meteorology
atomic mass measuring
molar metrology
stoichiometry
The average atomic mass of all of the naturally occurring isotopes of a given element is called ___
the isotope number
stoichiometry
relative atomic mass
the basic atomic mass unit
All of the natural carbon on Earth occurs as one of three isotopes, each with ___
a mass of 12.01
six neutrons
six protons
12 protons
The relative atomic mass of carbon is ___
1/12 of an amu
1 amu
12 amu
12.01 amu
Since 1961, a single amu has been defined as the mass of ___
a hydrogen atom
1/16th of an oxygen atom
1/12th of an atom of carbon-12
1/18th of an atom of oxygen-18
In what year were isotopes discovered?
1812
1869
1912
1961
What is the relative atomic mass of oxygen?
8 amu
16 amu
17 amu
18 amu
In chemistry, the mole is defined as the number of atoms in ___
1 gram of hydrogen 1
12 grams of carbon-12
an average adult star-nosed mole
16 grams of oxygen-16
How many atoms are in 12 grams of carbon-12?
6.022 x 1023 atoms
3.022 x 1026 atoms
2.602 x 1032 atoms
6.202 x 1020 atoms
The number 6.022 x 1023 is known as ___
Avocado's constant
Avogadro's number
Dalton's digit
the Lavoisier numeral
A dozen roses is twelve roses, but a mole of roses is ___
144 roses
2.066 x 1023 roses
6.022 x 1023 roses
3.062 x 1032 roses
One mole of oxygen atoms contains 6.022 x 1023 atoms, and it weighs ___
12 amu
16 amu
12 grams
16 grams
One mole of hydrogen weighs 1.008 g, a mole of iron weighs ___
12.01 g
16.00 g
26 g
55.85 g
The mass, in grams, of one mole of a substance is known as its ___
atomic mass unit
molar mass
relative atomic mass
stoichiometric weight
Our bodies use sucrose by combining it with oxygen to create energy plus ___
C6H12O6 and H20
O2 and H20
CO2 and C6H12O6
CO2 and H20
When writing a reaction out as an equation the number of atoms of each element has to ___
be larger on the reactant side
be exactly the same on both sides
be larger on the product side
include the element carbon
How many molecules of oxygen are required to burn one molecule of sucrose?
1
5
11
12
In order to burn 5 grams of sugar, Hank calculated that he would need to inhale about ___
5 breaths
35 breaths
350 breaths
530 breaths
