Chemical Reactions
What law is present when we are doing Chemical Reactions?
The Law of Conservation of Mass & The Law of Conservation of Energy
Name the following :
MnO4 ^1-
When going from grams to atoms, what number is needed?
Avogadro's Number = 6.022 x 10^23
1
Free 100 points🙂
What is your SI Leader's (Jonny) favorite thing to do in Chemistry?
Naming !
What are the symbols used to identify the states of matter in a reaction?
(aq) - aqueous
(g) - gas
(l) - liquid
(s) - solid
Name the following:
NH4Br
Ammonium Bromide
Household sugar has the molecular formula C12H22O11. What is the mass percent of C in it?
42.1%
2
-100 points
Where can you go for help studying for Exam 2?
The LRC and Office Hours with either your Professor or your SI Leader
Which one of the following is a chemical change, NOT a physical change: splitting wood, melting ice, burning wood
Burning wood
Name the following :
Fe(ClO2)3
Iron (III) Chlorite
How many grams are in 0.885 moles of Manganese ?
48.6 grams
3
+400 points
Who is Jonny's favorite Musical Artist?
- SZA, Mac Ayres, Frank Ocean, Tyler the Creator, Sade, Tyla, Clairo, H.E.R, Erykah Badu, or Steve Lacy?
All of the above!
What is it called when the Chemical Equation has the same number of atoms on both sides?
A Balanced Equation
Name the following :
Sulfurous Acid
H2SO3
What is the Mass percent of Carbon in 100g of Malachite
( Cu₂CO₃(OH)₂ )
approx. 9.9%
4
-400 points
What is your SI Leader's Major?
(2x points if you can guess what his original major was)
Biology PreMed
Original Major : Business Management
Na2CO3 (aq) + KOH (aq) ->
Na2CO3 (aq) + KOH (aq) -> NaOH (aq)+ K2CO3 (s)
Name the following :
Chromium (III) Nitrate
Cr(NO3)3
The mass percent of silicon in computer chip is 4.21%. What mass of chips is required
to be able to extract of 215 g of silicon?
5.11 x 10^3 grams
5
swap points with the group with the lowest points
What is your SI Leader's dream job?
To work as a Dermatologist