Scientific Notation and Unit Converstions
Write 450,000 in scientific notation.
What is 4.5 × 10⁵?
What is a tiny packet of light energy?
What is a photon?
Where are valence electrons located?
What is the outermost energy level?
In Bohr’s model, electrons travel in fixed ___ around the nucleus.
What are orbits (energy levels)?
Write the electron configuration for hydrogen.
What is 1s¹?
In orbital notation, what symbol represents an electron?
What is an arrow (↑ or ↓)?
What do periods on the periodic table represent?
What are rows/energy levels?
Write 3.2 × 10⁻⁴ in standard form.
What is 0.00032?
Which has the highest energy: radio, infrared, or gamma?
What is gamma?
How many valence electrons does oxygen have?
What is 6?
Which model replaced Bohr’s orbits with orbitals of probability?
What is the Quantum Mechanical Model?
Which principle says electrons fill lowest-energy orbitals first?
What is Aufbau Principle?
Draw the orbital notation for oxygen (1s² 2s² 2p⁴).
What is ↑↓ in 1s, ↑↓ in 2s, ↑↓ ↑ ↑ in 2p?
What do groups (columns) represent?
What is number of valence electrons?
If the number is smaller than 1, will the exponent be positive or negative?
What is negative?
What happens to frequency when wavelength increases?
What is it decreases?
Why are valence electrons important?
What is they are used in bonding?
What shape are s orbitals?
What is spherical?
State Hund’s Rule and Pauli Exclusion Principle in your own words.
Hund’s: one electron in each orbital before pairing. Pauli: max of 2 electrons per orbital, with opposite spins.
Where are metals located on the table?
What is to the left of the stair-step line?
Convert 9.3 × 10⁶ into standard form.
What is 9,300,000?
What is the speed of light constant (c) in m/s?
What is 3.0 × 10⁸ m/s?
How many valence electrons do all noble gases (except helium) have?
What is 8?
Why is the Quantum Mechanical Model more accurate than Bohr’s?
What is it accounts for electron probability, not fixed paths?
Write the noble gas notation for sulfur.
What is [Ne] 3s² 3p⁴?
What is the maximum number of p orbitals that are possible?
What is 3?
Give one property of nonmetals.
What is brittle/poor conductors/gain electrons in reactions?
1 km = ___ m.
What is 1000?
If wavelength = 6.0 × 10⁻⁷ m, what is the frequency? (c = λν)
What is 5.0 × 10¹⁴ Hz?
Which group has 1 valence electron and is the most reactive?
What are alkali metals?
The maximum number of electrons that may occupy the third electron energy level is ________.
What is 18?
The electron configuration of an atom shows ________.
What is the number of electrons in each electron energy level?
How many orbitals are in the p subshell?
What is 3?
Which element group contains elements that are unreactive because they have full valence shells?
What are noble gases?
Convert 5000 mg into grams.
What is 5 g?
The greater the energy of a photon, the ____________ the wavelength and the higher the _______________.
According to the quantum mechanical model, which orbital has the lowest energy?
What is 1s?
What element has the electron configuration 1s²2s²2p⁶3s²3p⁵?
What is Chlorine?
Draw the orbital notation for Neon (Ne).
What is 1s ↑↓ 2s ↑↓ 2p ↑↓ ↑↓ ↑↓?
Why do scientists use scientific notation?
What is to easily write very large or very small numbers?
When a photon is absorbed by an atom, what happens to one of its Valence electrons?
What is moves from a lower to a higher energy level?
The abbreviated electron configuration for the phosphorus atom is ________.
What is [Ne]3s²3p3?
his element has the ground-state orbital notation 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰.
What is Cadmium (Cd)?