Atomic Theory
Which scientist of atomic theory described the atom as a solid sphere with no internal structure?
Who is John Dalton
A sample of Sugar would be considered or classified as what type of matter?
What is a compound?
What would the chemical formula be for ions
Al³⁺ and P³⁻
What is AlP
What is the correct order for number of electrons each orbital can hold?
__ = s
__ = p
__ = d
__ = f
What is: 2,6,10,14
Br2O5 is considered a molecular or ionic compound?
What is molecular
P vs C ?
What kind of change is Gold being melted over time
Physical change
What information is needed in order to calculate the formula mass of a compound?
What is the count of each element and each element's mass
Which scientist of atomic theory described the atom as mostly empty space with a small nucleus?
Who is Ernest Rutherford
A sample of Iced Tea would be considered or classified as what type of matter?
What is a homogeneous mixture
What would be the chemical formula for ions
B³⁺ and Se²⁻
What is B₂Se₃
Which rule for writing electron configurations states if two electrons occupy the same orbital, they must have opposite spins?
Pauli Exchange Principle
K2CO3 is considered a molecular or ionic compound?
What is Ionic
P vs C ?
What kind of change is An Iron nail rusting as it exposed to air
Chemical change
Which of the following statements is true about elements in the same group?
They have similar ionization energies
They have similar atomic radii
They have the same electronegativity
They have the same number of valence electrons
They have the same number of valence electrons
Which scientist of atomic theory described the atom as electrons embedded in a sphere of positive charge?
Who is J.J. Thomson
A sample of Silver would be considered or classified as what type of matter?
What is an element
What would be the chemical formula for ions
Mg2+ and PO43-
What is Mg3(PO4)2
Which rule for writing electron configurations states electrons occupy the orbitals of lowest energy first?
Aufbau Principle
What is the name of compound: Br2O5?
What is Di-bromine pentoxide
P vs C?
What kind of change is Burning liquid butane when using a lighter
Chemical change
What is the abbreviated electron configuration of Calcium?
What is - [Ar] 4s2
Which of the following would best describe a anion
55 protons, 54 electrons
19 protons, 18 electrons
82 protons, 82 electrons
8 protons, 10 electrons
What is: 8 protons, 10 electrons
A sample of Pasta Salad would be considered or classified as what type of matter?
What is a heterogeneous mixture
O2- has how many protons and electrons?
8 protons
10 electrons
Which rule for writing electron configurations states electrons will fill each orbital of a sublevel one by one first, and then will double up once each orbit contains one electron?
Hund’s Rule
What is the name of compound: K2CO3?
What is Potassium Carbonate
P vs C?
What kind of change is Water evaporating as it is boiled
Physical change
Complete the following equations and determine/describe if the reaction is consistent with the law of conservation of mass.
A 35 g sample of natural gas completely reacts with 100 g of Oxygen gas to form 45 g carbon dioxide and 75 g of water.
What is - no, not consistent.
35g + 100g --> 45g + 75g
135 --> 120
Which of the following describes a Selenium (Se) ion having 34 protons, 45 neutrons, and 36 electrons
Atomic mass: 79 Charge: -2
Atomic mass: 34 Charge: +2
Atomic mass: 34 Charge: -2
4. Atomic mass: 79 Charge: +2
What is #1, Atomic mass: 79 Charge: -2
List the 3 states of matter. Describe the volume, shape and motion properties of each.
What is -
Solids - definite shape/volume - only vibrate/oscillate
Liquids - definite volume; take shape of container - can move relative to one another
Gas - take shape and volume of container - can move all around
K1+ has how many protons and electrons?
19 protons
18 electrons
Where are the valence electrons located in the electron configuration in the element Sulfur?
1s2 2s2 2p6 3s2 3p⁴
What is electrons in 3s2 3p⁴
Total of 6 valence electrons
What type of elements can make up a molecular compound?
What is a non-metal and a non-metal
Describe the difference between exothermic and endothermic reactions
What is -
Exothermic - release energy/heat
Endothermic - absorb energy/heat
Why is a prefix needed for naming a molecular compound, but not needed when naming ionic compounds?
What is - Ionic compounds will have ions with charges that will always bond in specific ratios. Molecular compounds do not have ions/charges so they share electrons and can bond in "any" ratios