Physical and Chemical Properties
Give 3 examples of physical properties.
Texture, color, boiling/melting point/ phase at RT, etc.
You heat water, and it begins to boil.
What is Physical?
These pure substances are pretty identifiable since they are on the Periodic Table.
What are elements?
Energy is neither created nor destroyed, only transformed from one form to the next.
What is The Law of Conservation of Energy?
This separation technique involves using a porous membrane to separate particles by size.
What is filtration?
This describes a property that changes with the amount of the substance present.
What is extensive?
A steak is massacred, as a new chef overcooks it to well done.
What is Chemical?
Air, Lemonade, Bronze, and Saltwater are all examples of this classification of matter.
What are mixtures?
This state of matter is characterized by having the most kinetic and potential energy.
What is Gas?
Chromatography separates what substances by polarity and particle size?
What are pigments?
This describes the capacity for a substance to initiate a chemical change with another.
What is reactivity?
Carbon-14 decays to Nitrogen-14.
What is Nuclear?
These substances follow the Law of Definite Proportions.
What are compounds?
This is a process or reaction that releases energy.
What is exothermic?
This separation technique is ideal for liquids with significantly different boiling points.
What is Distillation?
This is a solid formed in the process of a chemical reaction.
What is a precipitate?
A pencil is snapped in half, and it leaves a sawdust scent behind.
What is Physical?
Calculate the percent composition of 13.6 g carbon in 50 g of a CO2 sample.
What is 30%?
Identify the enthalpy change for an exothermic and endothermic reaction, respectively.
What is negative and positive?
Crystallization can be achieved through evaporation of this level of saturation of a solution.
What is super saturated?
List the 3 agents of chemical change.
What are Catalyst/Enzymes, Increase heat/temperature, Increase Surface Area?
The sun fuses together Helium from smashing Hydrogen together at incredibly high temperatures.
What is Nuclear?
Calculate the percent composition of carbon in CO2.
What is 27.27%?
Convert 342.24 J to kcals.
What is 0.081797 kcals?
Separation techniques can only be used for these types of bonds among substances.
What are Physical?