Units
metric unit of mass
the gram
What is this?
H2(g)
hydrogen gas
the left side of a chemical equation contains the compounds present at the beginning before the reaction has begun
reactants
Pick up broken glass with...
broom and dust pan
6.02 x 1023 number of things is called a....
mole
H2 + 3H2 => 2NH3
Which is the coefficient in this equation?
The big 3 and big 2
What is this?
CO2(g)
carbon dioxide gas
the right side of a chemical equation contains the new compounds after the reaction is over
products
protect your eyes with...
safety goggles
one carbon atom has a mass of 12 atomic mass units.
A mole of carbon atoms would weigh....
12 grams
A balanced chemical equation compares the amounts of reactants and products not in grams, but in a unit called the....
mole
What is this?
H2O(s)
solid water also known as ice
on the Periodic Table, oxygen has a mass of 16. What would a mole of oxygen gas (O2) weigh?
O2 contains 2 atoms of oxygen
16 + 16 = 32 grams per mole
the burners we used in lab contained a flammable liquid called...
alcohol
The room is filled with smoke! Where is the switch to activate the ventilation system?
near the door clearly marked
According to our math, we should have made 12 grams of product, but when we tried it in real life, we only made 3 grams of product. What was our percent yield?
actual yield / theoretical yield x 100
3 / 12 = .25 = 25%
What is this?
CaCO3
calcium carbonate
also known as limestone, chalk, TUMS, Alka-Seltzer
The _______________in a chemical reaction is a reactant that is totally consumed when the chemical reaction is completed.
limiting reagent
we protect our clothes from chemicals by wearing...
lab aprons
The study of the relationships between reactants and products in a chemical reaction is called...
stoichiometry
What unit belongs in the blank space?
The molar mass of
carbon dioxide is 44.0 _____per ______
grams per mole
What is this?
NaCl(aq)
table salt dissolved in water
(sodium chloride aqueous)
S8 + 12O2 => 8SO3
12 oxygen gas molecules are needed to produce 8 SO3 molecules. The relationship between the 12 and the 8 is called a _____ ___________
mole ratio
acid splashed in your face! Immediately run to the....
eye wash station
To light up the burners in the chem lab, we used a steel device called a....
sparker tool