Matter and Measurements
What is matter?
Has mass and volume
What is the structural difference between isotopes?
Neutrons
When frequency increases, Energy _______
decreases
True or False
When ionization energy increases, atomic radius increases
False
Write the formula for copper (I) oxide
Cu2O
List 1 difference between an ionic and covalent bond.
Teacher will confirm
What is the molar mass of calcium oxide?
56.08 g/mol
What type of reaction is the following
Al4C3 + H2O → CH4 + Al(OH)3
Double displacement
What state of matter has a definite volume but not shape
Liquid
How many protons does Vanadium4+ have
23
How many electrons can a d orbital fill?
10 electrons
Why are the noble gasses stable?
Their orbitals are completely filled up
What type of bond is P2O5
Covalent bond
What is the bond angle for NCl3
109.5
The empirical formula of a substance is CH2O. The molar mass is 180. g/mol. What is the molecular formula?
C6H12O6
Balance the equation
Fe2O3 → Fe + O2
2Fe2O3 → 4Fe + 3O2
What is the difference between a pure substance and compound?
Compound is two or more atoms bonded togthor. Pure substance has a fixed composition, it can be either a compound or an element
How many neutrons does Platinum -190 have
112 neutrons
Write the noble gas configuration of Indium (In)
[Kr] 5s24d105p1
List the following elements from largest to smallest electron affinity
Tungsten (W), Sulfur(S), Francium(Fr), and Mercury(Hg)
Sulfur > Mercury> Tungsten > Francium
Write the name for Cr2(SO4)3
chromium(III) sulfate
What intermolecular forces does H2CO have?
LDF
H-bond
Dipole-dipole
How many moles are in 81.5 g of vanadium (III) sulfate.
0.209 moles
Balance
C7H10N + O2 → CO2 + H2O + NO2
2C7H10N + 21O2 → 14CO2 + 10H2O + 2NO2
The density of gold is 19.3 g/cm3. If I have 0.715 kg of gold, what is its volume?
37.0 cm3
How many electrons will I have if
Mass number = 193
Charge = 9+
#neutrons = 116
68 electrons
What is the energy of light if its wavelength is
4.87 x 10-5 m
4.08 x 10-21 J
Which has the smaller atomic radius
K+ or Ca2+
Calcium
What would this structures name be? P2O5
diphosphorus pentoxide
What are the IMF's between ammonia and SO2?
H-bond, LDF
What is the percent composition of water in copper(II) chloride di hydrate
CuCl2 * 2H2O
21.14%
Balance the equation
Ca3(PO4)2 + SiO2 +C → CaSiO3 + P4 + CO
2Ca3(PO4)2 + 6SiO2 +10C → 6CaSiO3 + P4 + 10CO
A cesium block has a mass of 25.7 g and volume of 13.7 mL. If placed in water (density of 1 kg/L), will the block float or sink?
Sink and then explode!
Naturally occurring Boron is 80.20% boron -11 (atomic mass = 11.01 u) and 19.80% of some other isotopic form of boron.
What is the atomic mass of the second isotope in order for the average atomic weight to equal 10.81u
10.01 u
Write the electron configuration of Lead (IV) (Pb4+)
1s22s22p63s23p64s23d104p65s24d105p64f145d10
As electrons are being removed from an atom, will the ionization increase or decrease with each subsequent electron being pulled? Explain your answer
Increase, as electrons are removed the nucleus can pull the remaining electrons closer. This requires more energy to remove another electron
Write the formula for manganese (VII) arsenide
Mn3As7
Draw the lewis structure for ozone (O3). Include formal charges and resonance if present
Teacher will confirm
Phenyl magnesium bromide is used as a Grignard reagent in organic synthesis.
Determine its molecular formula if its molar mass is 181.313 g/mol.
It contains 39.7458 % C, 2.77956% H, 13.4050% Mg, 44.0697% Br.
C6H5MgBr
Write the equation. Make sure you have subscripts and is balanced
Iron metal reacts with liquid water to produce solid iron(III) oxide and hydrogen gas
3Fe(s) + 4H2O(l) → Fe3O4 (s) + 4H2 (g)