Definitions
The study of matter and its physical and chemical changes is known as
Chemistry
What is the smallest complete unit of an element?
Atom
On the pH scale, numbers less than 7 indicate that the solution is ___________
Acidic
True or false: Catalysts will shift a reaction to the left or right
False
Stronger IMFs lead to ________________ boiling points
Higher
This process intakes carbon dioxide and water, and outputs glucose and breathable oxygen
Photosynthesis
Carbon
Neutrons have a charge of _______ and a mass of _____ amu
Zero (0); One (1)
Acids and bases are both this type of substance, which can conduct charge in solution
Electrolyte
When a solution contains exactly the maximum amount of solute it is _____________
Saturated
Ionic compounds have this type of structure when solid
Lattice/Crystal
Exothermic reactions will feel _______ to the touch and will have _______ values for heat of reaction
Hot; negative
An element's ability to hold onto its electrons is defined as
Ionization energy
What type of subatomic particles can be found in the nucleus?
Protons and Neutrons
Why is pure water considered a neutral substance?
The amount of hydronium and hydroxide are equal and the pH is 7
________________'s principle can be used to predict which way a reaction will shift when a stress is added
Le Chatelier
Nonpolar molecules experience this type of weak IMF
London Dispersion Forces
A good way to tell the difference between CO2 and O2 gas is to test it using
A flame/burning splint
When electrons fall from excited to ground state and give off light it is called
The photoelectric effect
An element's period on the periodic table matches its number of
PELs/Occupied Energy Levels
When an acid is is placed in water, hydronium concentration _________ and the pH __________
Increases; decreases
The energy needed to start a reaction is called
Activation energy
Molecules with unequally shared electrons contain this type of bond
Polar covalent
The math symbol Δ means "___________" and is always found by subtracting __________ - ________
"Change"; final - initial
Using mole coefficients to compare two things is a branch of chemistry (and math) called
Stoichiometry
Valence Electrons
Behaviorally, an acid can always __________, while a base can ____________
Donate an H+; Accept an H+
Six things that can affect the speed of a reaction are
Molecules with uneven distributions of shared electrons experience this "magnet-like" force
Dipole-dipole attractions
Creating one of these spectra could help you identify an unknown element
Bright-line spectrum