Chemical Bonding
What happens to electrons when an ionic bond forms?
One atom transfers electrons to another atom.
What is the electron configuration of Na (atomic #11)?
1s² 2s² 2p⁶ 3s¹
How many electrons go in the 1st shell of a Bohr model?
2
On a tectonic map, what do arrows pointing toward each other represent?
Convergent boundaries.
A reaction that absorbs heat and feels cold to the touch is called what?
Endothermic.
What is a covalent bond?
A bond where atoms share electrons.
What is the electron configuration of O (atomic #8)?
1s² 2s² 2p⁴
Draw a Bohr diagram for Nitrogen (7 electrons) how many go in each shell?
2 in the first shell, 5 in the second shell.
On a tectonic map, what do arrows pointing away from each other represent?
Divergent boundaries.
Convert 5,000 mL to liters.
5 L
What is the formula for an ionic compound made from Mg²⁺ and Cl⁻?
MgCl₂
Give the noble gas configuration for Ca (atomic #20).
[Ar] 4s²
Write the isotope notation for Carbon-14.
¹⁴₆C
In the Oreo lab, what did pulling the cookie halves apart model?
A divergent plate boundary.
A block has a mass of 30 g and a volume of 15 mL. What is its density?
2 g/mL
How many total shared electrons are in a double bond?
4 shared electrons.
Give the noble gas configuration for Cl (atomic #17).
[Ne] 3s² 3p⁵
Temperature increases while pressure stays constant. What happens to the volume?
Volume increases.
What type of crust is thicker but less dense: continental or oceanic?
Continental crust.
What type of heat transfer moves wildfire heat through rising hot air (currents)?
Convection.
Write the ion for sulfur AFTER gaining 2 electrons.
S²⁻
This orbital diagram violates which principle?
“2 electrons in the same orbital with the same spin.”
Pauli Exclusion Principle
According to Boyle’s Law, what happens to volume when pressure increases?
Volume decreases (inverse relationship).
Is density an intrinsic or extrinsic property of matter?
Intrinsic property.
When a solid melts into a liquid, does its kinetic energy increase or decrease?
It increases.