potions and poisons - macombso.org
TRANSCRIPT
Safety First
Students must wear:
◦ Closed shoes with socks
◦ Long pants
◦ Lab coat or lab apron with long sleeve shirt
◦ Indirect vent or unvented chemical splash
proof goggles.
◦ Long hair (shoulder length or longer) must be
tied back.
◦ Visorgogs are permitted
Recommended Lab Equipment for Div B
❖Very long list at
https://www.soinc.org/sites/default/files/uploade
d_files/RecommendedLabEquip_DivB_121718.
❖Graduated cylinders, beakers, test tubes etc
What Students May Bring/team
1 page of notes (8.5X11”) with information on
both sides
2 Calculators
writing instruments
The Competition
Written Exam (60 %)
◦ Typical chemistry topics
◦ Household chemicals
◦ Toxic living organisms
◦ Environmental toxins: iron, copper, and
mercury
Lab (40%)
◦ Minimum of one lab activity
Chemistry
Ionic and covalent bonds
Mixtures, solutions and compounds
Techniques to separate components of a
mixture
Physical and chemical changes
Balancing chemical equations
Effect of dilution on toxicity
Poisons
There are many poisons around the house that middle school students should know about.
You should not mix cleaning products and understand why
Middle school students should understand that drugs undergo reactions that cause them to either become ineffective or poisonous.
Middle school students should understand that cleaning products should not be consumed
Household chemicals
Ammonia (ammonium hydroxide, NH4OH)
Hydrogen peroxide (H2O2)
Rubbing alcohol [isopropanol,
(CH3)2CHOH]
Bleach (sodium hypochlorite, NaOCl)
Epsom salt (magnesium sulfate, MgSO4)
Vinegar (acetic acid, CH3CO2H)
Calcium supplements (Ca2+)
Iron supplements (ferrous, Fe2+)
https://www.nsf.gov/news/special_reports/c
hemistrynow/chem_cleaners.jsp
https://www.poison.org/
http://www.goodhousekeeping.com/home/cl
eaning/tips/a32773/cleaning-products-never-
mix/
Toxic Living Organisms
Recognize the organism
Found in what location?
Toxicity?
What is the identity of the toxin?
Mode of action of the toxin?
Treatment if any?
Poison ivy (Toxicodendron radicans)
Wild Carrot (Daucus carota)
Autumn Skullcap (Galerina
marginata)
Henbane (Hyoscyamus niger)
Oak (Quercus sp)
Timber Rattlesnake (Crotalus
horridus)
Eastern Coral Snake (Micrurus fulvius)
Cotton Mouth Snake (Agkistrodon
piscivorus)
Brown recluse Spider (loxosceles
recluse)
Black Widow Spider (Latrodectus
mactans)
Poisons
There are also poisons in our environment that middle school students need to understand
Middle School students should understand that metal ions can get into drinking water from chemical spills
Middle School students should understand that many organic molecules are also dangerous
Middle School students should understand that how dangerous something is will depend on its concentration and how to dilute.
Environmental Toxins
Iron
Copper
Mercury
Students should be able to answer
questions about the types of heavy metals
that might be found in drinking water or
soil.
How and Why this might happen?
Potions In this part of the event we are going to
focus on aspects of chemistry that might
seem like “MAGIC”!!!!!
Middle School students can understand
a lot of the concepts without having to
understand all of the chemistry
LAB ACTIVITIES
Chromatography
Separation of a mixture
Serial dilution
Determination of pH
Conductivity testing (ionic vs. covalent
bonding)
Physical and chemical changes
Rate of a chemical reaction
Evidence of a Chemical Reaction
Temperature change
Color change
Production of a gas
Formation of a precipitate
Students should be able to balance a simple
chemical equation where the reactants and
products are already given.
https://middleschoolscience.com/2017/03/05/balancing-equations-a-
hands-on-activity/
Potions mixing two reactants together results in a
drastic change in color
mixing two liquids together forms a solid
mixing two liquids together a gas is given
off
mixing two liquids together heat is given
off or taken it
mixing two liquids can produce an
immediate reaction, a delayed reaction, or
a reversible reaction
Potions Students will be able to mix
reagents together and on the basis
of what happens, they should be
able to classify the reaction as:
No reaction
Precipitate reaction
Drastic color change
Gas release
Heat release/heat intake
Delayed reaction
Hydration/dehydration
Acid/Base titrations
Potions
Separating chemicals that have been
mixed would also have seemed like
“MAGIC” in the middle ages
Students may be asked to separate
components of a mixture.