Chemicals and Reactions
Equations
Compound Names
Atoms
Podcast I
Podcast II
100
C + O2 -> CO2
The substances that react together and are found on the left side of the arrow in a chemical equation are called this _______. The right side of the equation is known as the product.
What are reactants?
100
kilo = 10x
x=?
What is 3?
100
H2O
What is water or Dihydrogen monoxide?
100
The negatively-charged subatomic particle that orbits the nucleus of an atom.
What is an electron?
100
Many ships today are made out of steel which is much stronger than wood. But unfortunately, steel must be coated with a special material to prevent it from becoming this reddish brown substance.
What is rust?
100
This tool can help analyze medical images, predict disease risk, and provide other assistance to doctors and patients.
What is Artificial Intelligence or AI?
200
A chemical that increases the rate of a chemical reaction without being used in the process.
What is a catalyst?
200
milli (or m) = 10x
x=?
What is -3?
200
CO2
What is carbon dioxide?
200
Two or more atoms of the same element that have different numbers of neutrons.
What is an isotope?
200
The upward force that a fluid exerts on an object placed in it.
What is buoyancy?
200
Handwarmers are warm because of this rapid chemical reaction that produces rust.
What is oxidation?
300
A chemical reaction that releases energy (eg combustion).
What is an exothermic reaction?
300
NaCl
What is sodium chloride or table salt?
300
An atom's outermost electrons.
What are valence electrons?
300
The outermost electron in an atom's orbit. They are the electrons that interact with other atoms to form bonds.
What are valence electrons?
300
This number that ranges from 0 to 14 indicates how acidic a liquid or solution is.
What is a pH number?
400
Zn + CuSO4 -> Cu + ZnSO4
A reaction (such as the one above) in which one element or ion in a compound is replaced by a different element or ion.
What is a single displacement reaction?
400
K = oC + x
X=?
What is 273.15?
400
CH2O
What is a carbohydrate?
400
The process by which an atom loses electrons in a chemical reaction.
What is oxidation?
400
The ratio between cement and this material is important in order to create quality concrete.
What is water?
400
This chemical weapon was used during World War 1.
What is mustard gas?
500
A chemical that donates an H+.
What is an acid?
500
1 atm = x torr
X=?
What is 760?
500
NH4+
What is Ammonium?
500
An atom or group of atoms that develop an electrical charge by gaining or losing electrons.
What is an ion?
500
A positive result on a Takayama test could indicate that this liquid is present.
What is blood?
500
This rare gemstone, has chromium ions and can change color due to selective wavelength reflection.
What is Alexandrite?