Guess Who?
Sharing is Caring
Opposites Attract
Holy Mole-y!
Surprise me
100
I have 3 electron shells, 7 valence electrons and am often used as a disinfectant
What is Chlorine
100
Define a covalent bond
A bond between non-metals that involve sharing 1 or more pairs of electrons
100
Why don't noble gases attract and bond with other elements?
Because they have a full valence shell and are stable
100
A mole is also called __________'s number, after the Italian mathematician who's principle founded
What is Avogadro's number
100
What portion of a nickel coin is made of nickel? (within 5%)
What is 25%
200
I am the heaviest element that is naturally a gas and non-reactive
What is Radon
200
C12H22O11 is known by this chemical name
What is Sucrose (or Sugar!)
200
What is the negatively charge ion non-metals form?
What is anion
200
What is the molar mass of CO2?
12+16+16= 48 g /mol
200
97% of rare earth metals, used for strong magnets and laser beams, are extracted in what country
What is China?
300
I am the most reactant non-metal
What is Flourine
300
Diagram CH2O
Carbon double bonded to Oxygen and single bonded to Hydrogen
300
Work out the chemical formula for Lithium + Oxygen
What is Li2O
300
How many earth's would it take to have a mole's worth of sand? (assuming earth contains 2.0 x 10^20 grains of sand)
What is 3 x 103 Earths (or 3000 Earths!)
300
What day and year was Demetri Mendeleev born?
What is February 8, 1834
400
I am the most abundant element, accounting for 90% of the atoms in the universe
What is Hydrogen
400
Name at least 4 (of the 7) elements that are found as diatomic molecules, or bonded to themselves, when in their elemental state
What are H2, N2, O2, F2, Cl2, Br2, I2?
400
What is the name for positively charged ions?
What are cations
400
How many molecules of H2O are in 300grams of water?
Molar mass = 18g/mol
300/18=16.67 moles
16.67 x 6.02 x 10^23=
1.004 x 1025 molecules of water
400
Describe the difference between a transfat and an unsaturated fat in terms of the molecular structure
Trans fats have hydrogen's on opposite sides of the carbon double bond, while unsaturated fats have hydrogen on the same sides of the double bond
500
I am the most reactive metal
What is Francium
500
Which element forms the linking chain of most organic molecules, forming single, double, triple or even quadruple bonds?
Carbon
500
Diagram the compound formed by magnesium and nitrogen
Magnesium (3 shells, 2 valence electron, +2 charge), Nitrogen (2 shells, 5 valence electrons, -3 charge)
Mg3N2
500
If you had a mole's worth of pennies and distributed it to is evenly to each of the 8 billion people on earth, how much money in dollars would each person receive?
(6.02 x 1023 pennies)/(8 x 109) = 0.7525 x 1014 pennies
= 7.525 x 1011 dollars
=$752,500,000,000 per person
500
Of the 118 elements in the Periodic Table, how many occur in nature found in the earth's crust and oceans?
What is 92 elements? (the elements in green below)