Unit 1
Define Ionization Energy.
The amount of energy required to remove an electron.
Predict the products (chemical formula) of:
iron (III) + nickel (II) chlorate -->
Fe(ClO3)3 + Ni
What is the study of stoichiometry?
Stoichiometry is the branch of chemistry that allows us to associate realistic numbers with chemical quantities.
What is the molar mass of hydosulfuric acid?
H2S --> 34.09 g/mol
How much is a ream of paper?
500 sheets.
Define Effective Nuclear Charge (Zeff).
The attraction between the positive nucleus and the negative outer electrons.
Predict the products (chemical formulas) for: magnesium chloride + ammonium phosphate --> ?
Mg3(PO4)2 + NH4Cl
6.022 X 1023 molecules
Rubidium has two common isotopes, Rb-85 and Rb-87. If the abundance of Rb-85 is 72.2% and the abundance of Rb-87 is 27.8%, what is the average atomic mass of rubidium? Consider significant figures.
86 amu
What is ornithology?
The study of birds.
What are the products and states of an incomplete combustion reaction?
gaseous carbon dioxide, gaseous carbon monoxide, gaseous water and solid carbon
What is the molar mass of Al(OH)3? Round to one significant figure.
78.01 --> 80 amu
HClO2 --> 68.46 g/mol
If you mix all colours of LIGHT, do you get black, white or a rainbow?
White.
What is the correct name for H3PO2 (aq)?
hypophosphorous acid
Which of the following are solid products: (NH4)3PO4, AgBr, NH4OH, Mg(OH)2, Ca(OH)2?
AgBr, Mg(OH)2
How many nitrogen atoms are in 2.5 moles of nitrogen gas?
3.0 x 1024 nitrogen atoms
The half-life of chromium-51 is 28 days. If the original sample contains 510 grams, how much chromium would remain after 56 days?
127.5 g --> 130 g
What survives impacting Earth's surface: a meteorite, a meteor, or an asteroid?
Meteorite.
image correct.
Which of the following would have a net ionic reaction:
a) NaCl + AgNO3 -->
b) HClO3 + KOH --->
c) NH4OH + H2S -->
d) Na2CO3 + NiCl2 -->
all of the above
What is the mass of in 25.3 litres of water?
20.4 grams
How many atoms of hydrogen (in water) are produced if 2 grams of liquid methane are completely burned (combustion)? Consider significant figures.
3 X 1024 atoms of hydrogen
Name THREE NHL teams whose team name contains 3 consonants in a row. For example, the Toronto Maple Leafs, the Maple Leafs is their team name.