Chemical Reactions
Periodic Table
Intro to Chemistry
Math in Chemistry
Random
100
The law stating that matter is neither created nor destroyed
What is the Law of Conservation of Matter?
100
The number of protons in one atom of gold (Au)
What is 79?
100
The number of millimeters in one meter
What is 1000?
100
The number of carbon atoms in one molecule of glucose
What is 6?
100
A description of a covalent bond
What is a type of bond where atoms share valence electrons (usually formed between two non-metals)?
200
Forming table salt from sodium and chlorine is an example of this type of chemical reaction
Na + Cl --> NaCl
What is a synthesis reaction?
200
One example of a noble gas
What are (any one of the following): Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn), and element 118 (named Oganesson, symbol Og)
200
A property that does not change with the amount of the sample
What is an intensive property?
200
The number of items in one mole
What is 6.02 x 1023?
200
The meaning of ΔT
What is the change in temperature over time?
300
The breakdown of hydrogen peroxide into water and oxygen is an example of this type of chemical reaction
2H2O2 --> O2 + 2H2O
What is a decomposition reaction?
300
The names of two elements that each have four valence electrons
What are (any two of the following): Carbon (C), Silicon (Si), Germanium (Ge), Tin (Sn), Lead (Pb), or Flerovium (Fl)?
300
The smallest unit of an element which retains the properties of that element
What is an atom?
300
The balanced equation for photosynthesis
CO2 + H2O → C6H12O6 + O2
What is:
6CO2 + 6H2O → C6H12O6 + 6O2
300
The number of energy shells in one atom of calcium
What is 4?
400
The type of reaction that can be represented by this equation:
AB + CD --> AD + CB
What is a double replacement reaction?
400
The most electronegative element
What is fluorine?
400
The process by which liquid becomes a gas
What is evaporation?
400
The number of moles of oxygen in 15.999 grams
What is 1 mole?
400
The type of chemical reaction in which ΔH is positive
What is an endothermic reaction?
500
The direction chemical equilibrium shifts when pressure on a reversible reaction is increased
What is towards the side of the reaction with fewer moles of gas?
500
A Bohr model and a Lewis dot diagram of Sodium
500
The density of this rectangular block
What is 1.7 g/cm3?
500
The number of grams in one mole of water
(Hint-Find the molar mass!)
What is 18.01 g?
500
Of the following elements, the one that has the greatest electronegativity: fluorine (element 9), francium (element 87), cobalt (element 27), iron (element 26)
What is fluorine?