Identify a Compound
H2O
Water
Reactants
2H2 + O2 -> 2H2O
Synthesis
Name an acid and a base.
Acid: lemon juice, stomach acid, battery acid, vinegar, soda, coffee, etc.
Base: bleach, ammonia, soap, etc.
If the theoretical yield of a reaction is 50g and you get 48.8 grams, what is a reasonable conclusion?
That you might have spilled some or some chemicals were stuck to the tools, etc.
What disease is often caused by radiation?
Cancer
CO
Carbon Monoxide
In a chemical reaction, the substances that are produced.
Products
2NH3 -> N2 + 3H2
Decomposition
What part of the pH scale is acidic and what part is basic?
0-7 acid
7-14 base
What is the law of conservation of mass?
Matter cannot be created or destroyed.
Why are they called nuclear reactions?
They affect the nucleus of the atom.
KI
Potassium Iodide
If two chemicals are mixed and it suddenly gets super cold and bubbles are made, did a chemical reaction happen?
Yes
C6H12 + 9O2 -> 6CO2 + 6H2O
Combustion
What do acids and bases taste like?
Acids are Sour
Bases are Bitter
How many atoms are in this molecule:
Fe(BrO3)2
9
If carbon-14 has a half-life of 5000 years, and you have a bone sample that has 25% of the expected carbon-14, how old is it?
10,000 years old.
If a compound only has hydrogen and carbon in it, it is a...
Hydrocarbon (oil/natural gas)
If two chemicals are mixed and nothing new appears...
2AgNO3 + Cu -> Cu(NO3)2 + 2Ag
Single Displacement
What does a buffer do?
Keeps the pH the same.
What is the molecular mass of O2?
(you can round)
32 g/mol
What is a form of harmless radiation you are often exposed to?
Light, Cellphones, Microwaves, etc.
FeSO4
Iron (II) Sulfate
If a reaction is exothermic, that means...
It gets hot.
2RbNO3 + BeF2 -> Be(NO3)2 + 2RbF
Double Displacement
What do acids and bases release into solution?
Acids release protons and bases release hydroxide ions.
What is the molecular mass of Potassium Iodide?
166 g/mol
What kind of nuclear reaction do we use to generate power and what kind is used in stars?
Nuclear Power - Fission
Stars - Fusion
AlPO4
Aluminum Phosphate
N2 + H2 -->
NH3
Ammonia
What 4 things will you see in a combustion equation?
1. Fuel (hydrocarbon)
2. Oxygen
3. Produces Water
4. Produces CO2
When an acid and a base react, they produce these two things.
water and a salt.
BALANCE THIS EQUATION AT THE BOARD
Nitrogen + Hydrogen = Ammonia
N2 + 3H2 -> 2NH3
Where are you exposed to ionizing radiation every day?
Radon coming up from the ground.