Show:
lab stuff
symbols and nomenclature
pure substances and their
properties
It's a Gas
periodic table
100
Made of heat-resistant porcelain or iron and consisting of a cup-like vessel and lid, this is used to hold small amounts of chemicals during heating at high temperatures.
What is a crucible?
100
This term is used to refer to two compounds with same numbers of atoms of each species bonded in different arrangment.
What are isomers?
100
A lavender flame is produced for salts of this Group I metal.
What is potassium?
100
Among Noble Gases, this species has the fastest diffusion rate.
What is helium?
100
Elements of this Group number are the stars of the "IONIZATION ENERGY SWEEPSTAKES" (highest values in their periods).
What is Group 18 (Noble Gases)?
200
This precision chemical flask is used for preparing solutions with specific molar concentrations.
What is a volumetric flask?
200
This is the chemical formula for calcium nitrate.
What is Ca(NO3)2
200
Next to Mercury metal, this metal has the lowest melting point: It will melt in your hand, but is a shiny solid at room temperature.
What is Gallium, element #31?
200
At pressure = 2 atm and T = 273 K, the volume of 0.5 mols of H2 gas is this number of liters.
What is 22.4?
200
Neutral, ground-state atoms of this element have 8 electrons in quantum level 3 and 2 electrons in quantum level 4.
What is Calcium?
300
Use this apparatus if chemicals somehow find their way into your eyes (despite the fact that you always wear your safety goggles).
What is the eye wash station?
300
This "functional group" is present in molecules of many flavor and fragrance molecules.
What is an ester, or an R-OR structure?
300
These are the three allotropes of elemental carbon.
What are bucky balls, diamond, and graphite?
300
Pressure exerted by a gas will increase if more gas is added to the vessel, if the vessel volume is decreased, and if THIS occurs.
What is an increase in temperature?
300
The electronegativity of this element is highest.
What is fluorine.
400
Chocolate candy was prepared in our lab using this very high-tech complex instrument that resembled a little frying pan.
What is a "heat mediating unit"? LOL
400
Sodium carbonate decahydrate has this chemical formula.
What is Na2CO3 (dot) 10H2O
400
Diamond is not thermodynamically stable material, and it spontaneously converts to graphite. However, THIS factor lends legitimacy to the diamond industry's claim that: "Diamonds are forever."
What is kinetic stability (what are kinetics of reaction changing diamond to graphite)?
400
Of the Group 17 elements, only these two are gases under conditions of standard temperature and pressure.
What are fluorine and chlorine?
400
The most reactive metal in Group I.
What is Francium?
500
The technique used to determine the molar concentration for an unknown acid and using a colored indicator is called THIS.
What is titration?
500
Olive oil contains mainly mono-unsaturated fats, meaning the carbon chains that make up these fats have THIS structural property.
What is at least one double bond?
500
Sodium metal is oxidized when it contacts water, forming Na2O and doing THIS to the pH of the system.
What is raising the pH?
500
THIS substance is the real gas that most closely approximates an ideal gas.
What is helium?
500
Relative to other common halogens, THIS describes Iodine's reactivity.
What is lower reactivity?