Unit 1&2: Science&Atom
Unit 1 Question 1
Convert 0.450 to scientific Notation
4.5 * 10-1
What arranged the periodic table by Atomic Number?
a) Mendeleev b) Rutherford
c) Thomson d) Moseley
d
Unit 4 Q31
How many Orbitals does the f-block have? How many Electrons?
7 Orbitals, 14 Electrons
How do Intermolecular forces differ from Intramolecular forces?
Give two examples of Intramolecular forces
Inter: Between Molecules
Intra: Within Molecules
Two Ex of Intra:
1.Ionic Bond 2. Covalent Bond
Unit 8 Q67
What is the difference in an aqueous solution and precipitate?
Aqueous: Something dissolved in water. Like Table salt in water
Precipitate: Compound that WAS dissolved becomes solid. Like Copper in our lab last week.
Unit 1 Question 4
Indicate the number of Sig Figs for
a) 3400 b)0.0010120
Remember Atlantic and Pacific!
a)2 b)5
What is the most Reactive Metal? Most Reactive Non-Metal?
Metal: Fr
Non-Metal: F
Unit 4 Q35
Identify the Following element given the electron configuration:
[Kr]5s24d2
Kr
True or False:
Elements that Form ionic bonds transfer electrons while in covalent bonds, electrons are shared.
True
Unit 8 Question 69
2H2 + O2 --> 2H2O
If 5g of H2 reacts with 5g of O2, how much water is produced?
10g
Conservation of Mass:Mass Cannot be created or destroyed.
Unit 1 Question 9
The Temperature of a beaker of water is 25 Degrees Celsius.
Multiple Readings are taken with an electronic thermometer: 22.1, 22.2, 23.0, 22.5, 22.4, 22.6, 22.0
Is the thermometer Accurate or Precise? Or Both
Precise, Not Accurate
What is the LEAST electronegative element?
Fr
Remember, electronegativity is an atoms ability to STEAL an electron. F has highest, Fr is lowest
Unit 4 Q29
As Frequency decreases, wavelength ____________ and energy ____________
Wavelength Increases
Energy Decreases
What is the for the following compound?
P4O10
a) Phosphorous Oxide b)tetraphosphorous decaoxide c)Phosphorous (IV) Oxide
d) Phosphorous (X) Oxide
B
Two Non-Metals, so covalent. PREFIXES
Unit 8 Q71
Balance the Following Chem Equation
__Na2SO4(aq) + ____SrCl2 (aq)
→ ___NaCl (aq) + ____ SrSO4 (s)
What type of reaction? What is formed?
Na2SO4(aq) +SrCl2 (aq)
→ 2NaCl (aq) + SrSO4 (s)
Double Replacement
Precipitate is formed aq-->s
How many protons, neutrons, and electrons do the following isotopes Have?
a) O-17 b) 14761Pm
b) 61p, 61e, 87n
Unit 3 Q25
Balance the Nuclear Equation
23592U --> 23190Th + _______
What kind of decay is it?
42He Alpha Decay
Write the electron configuration AND orbital diagram for Sulfur Ion S2-
Remember, 2- charge means has two extra electrons
Which of the following is the correct Chemical Formula for FeCl3
a) Iron Chloride b) Iron Trichloride
c) Iron (III) Chloride d) Iron (I) Chloride
C
Ionic.... NEVER PREFIXES
REMEMBER, FOR TRANSITION METALS, YOU NEED ROMAN NUMERAL.
ROMAN NUMERAL=CHARGE OF TRANSITION METALS
Unit 8 Q71
Balance the following Chem Equation:
___Fe + ____O2 --> ____Fe2O3
What type of Reaction?
Synthesis
4Fe + 3O2 --> 2Fe2O3
Unit 2 Question 12
What two things of Dalton's Theory is were wrong?
1. Atoms are Indivisible (we know now they have subatomic particles: P,N,E)
2. Atoms of the same element are identical. (We know now we can have Isotopes AKA diff # of Neutrons)
Unit 3 Question 25
Balance the following Nuclear Equation:
23993Np --> 23994Pu + _________
What kind of decay is it?
23993Np --> 23994Pu + 0-1e
Beta
Unit 4 Q33
Write the Noble Gas Configuration for Ba
What is the name of this compound: CaO
a) Calcium Oxide b) Calcium Monoxide
c) Calcium (I) Oxide d) Calcium (II) Oxide
A
Ionic: NO PREFIXES
No transition Metal, so do not need Roman Num
Unit 8 Q70
Predict Products AND balance the combustion of Methane (CH4)
CH4 + 2O2 --> CO2 + 2H2O
Combustion always have oxygen in reactants
If hydrocarbon Combustion, then CO2 and H20 in Products