Alchemy: Basics
Alchemy: Atoms/Periodic Table
Bonding: Configuration/Ionic/Properties
Bonding: Covalent
Reactions
Essential Questions
100
What is the name of the following instrument that precisely measures liquids?
graduated cylinder
100
What is the group name for barium?
Alkaline Earth Metals
100
How many valence electrons does phosphorus have?
5 valence electrons
100
How many covalent bonds does Arsenic typically make?
3 bonds
100
How is the following chemical reaction classified?
2Na + H2O --> H2 + Na2O
Single Exchange Reaction
100
What is the defining characteristic of an element?
number of protons
200
Convert 46.9 milliliters into Liters.
.0469 Liters
200
Which of the following has the most similar reactivity to gold?
Platinum Mercury Copper Erbium
Copper
200
Identify the element by the electron configuration: 1s22s22p63s23p64s23d1
scandium
200
What is an isomer?
A molecule that has the same molecular formula as another, but a different structure.
200
How many moles are in 100 grams of Ca(OH)2?
1.85 moles
200
Name one substance that is never toxic.
There isn't any!
300
How many significant figures does 0.002400 contain?
4
300
What atomic particle was discovered first?
Electron
300
What type of bonding does C2H6O(g) have?
Molecular Covalent
300
What is the small molecule shape of PBr3?
pyramidal
300
Balance the equation:
Rb + S8 --> Rb2S
16Rb + S8 --> 8Rb2S
300
Why do elements bond (3 reasons)?
To have zero charge
To have 8 valence electrons
Attraction
400
Which of the following is NOT matter?
Air Fire Earth Water
Fire
400
How many neutrons does the most stable/abundant isotope of mercury contain?
120 or 121
(Average Mass - Atomic Number)
(200.6 - 80)
400
What is the chemical formula for sodium phosphide?
Na3P
400
Draw the Lewis Dot Structure of C2H5N.
Answers will vary
400
How many moles are in 3 Liters of .25M solution?
.75 moles
400
What does the law of conservation of matter state?
The atoms in the reactants of a chemical reaction are exactly the same as the atoms in the products of the chemical reaction.
500
What is the volume of 27 grams of aluminum if the density of aluminum is 2.7 g/mL?
10 mL
D = M/V V = M/D
500
What element is produced by the beta decay of iron?
cobalt
500
What is the name of SrCO3
strontium carbonate
500
For SeF2:
Draw the molecule.
Draw the dipole arrows for each bond.
State if the molecule is polar or nonpolar.
Teacher will show you.
500
Estimate the pH of a base if [OH-] = .0025M
pH = 11
500
Fill in the blank:
ALL of chemistry happens the way it does so that the lowest amount of ____________ is used.
Energy