Quarter 3 Examination Flashcards
- A homogeneous mixture of two or more substances.
- Categorized as a homogeneous mixture because its components are indistinguishable from one another
Solution
the one being dissolved
Solute
the dissolving medium
Solvent
A solution which can dissolve further amount of solute at a particular temperature
Unsaturated
A solution which can not dissolve further amount of solute at a particular temperature
Saturated
It has dissolved more amount of solute than can be dissolved by solvent
Super saturated
Pertains to the maximum amount of solute dissolved in a given amount of solvent at a specific temperature and pressure
Solubility
Means that the amount of solute is relatively high
Concentrated
Means that the amount of solute is relatively low
Diluted
is the ratio of the mass of a solute to the mass of the solution, multiplied by 100.
mass of solute
OVER
mass of solution x 100
Percent by mass
is the ratio of volume (mL) of a liquid solute to the volume of solution,multiplied by 100.
volume of solute
OVER
volume of solution x 100
Percent by volume
refers the amount of mole of solute per kilogram of solvent. It is given by a number followed by an italic lower case m. For example, a 5 m aqueous solution contains 5 mol of glucose (C,H,0.) per kilogram of water.
Molality
refers the number of moles of solute per liter of solution. It is calculated by didviding the number of moles of solute by the volume of solution in liters.
Molarity
is used to determine the quantity or amount or a substance in a solution
Titration
the lowering of vapor pressure
Raoult’s law
is defined as “energy motion”
Kinetic energy
is considered as the “energy at rest”
Potential Energy
state the energy is neither created nor destroyed, but is converted from one form to another
Law of Conservation of Energy
include mechanical energy, which result from physical work; radiant or light energy
Forms of Energy
is defined as the transfer of thermal energy
Heat
Referring to the particular area of interests (within the circle)
System
Everything outside the area of interests (outside the circle but whitin the box)
Surroundings
Allow the transfer of mass and energy
Open System
Do not allow the transfer of mass and energy.
Isolated system
Allow the flow of energy but not mass
Closed system
Process of transferring heat from the system to the surroundings
Exothermic
If the flow of heat is from the surroundings to the system
Endothermic
- Identified that chemical reactions can
be studied in terms of the flow of energy, part of higher field - Provides a better view on the energetics reaction
Thermodynamics
Is associated with the transformation of reactants to product
Heat of reaction
The balanced equation showing the associated heat of reaction
Thermochemical equation
States that enthalpy change ( H) is independent of the number of steps involved in a reaction.
Hess’s Law
Is the measurement of the heat released or absorbed during a physical or chemical process.
Calorimetry
Contains water and/or other materials which can absorb heat
Calorimeter
The branch of chemistry that deals with the rate of chemical reaction
Chemical Kinetics
Can be defined as the change in concentration per unit time
Rate of reaction
The reliance of the reaction rate concentration of the reactants can be expressed through an equation
Rate law
Pertains to amount of time that a reactant needs to decrease by half from its initial concentration
Half life
Which states that chemical reactions occur as a result of collisions between reacting molecules
Collision theory
To initiate the reaction, molecules of the reactants must meet a minimum amount of kinetic
Activation Energy
Pertains to the physical and chemical properties of the reactants, including their states, bond type and strength
Nature of Reactants
Substance that speeds up the reaction rate being used up in the process
Catalyst
Made from non-carbon containing compounds or elements
Inorganic Catalysts
Carbon-containing compounds, also known enzymes
Biological Catalysts
Different phase from reactants
Heterogeneous
Same phase
Homogeneous