Chemistry Final Flashcards
Used chemicals and herbs for medical purposes
Apothecaries
Published an organized list of the 33 known elements
Antoine Lavoisier
First to theorize matter was composed of indivisible atoms
Democritus
First to isolate an element (P) through scientific inquiry
Hennig Brand
Tried to convert invaluable materials into gold
Alchemists
Extracted elements from ore and created alloys
Metallurgy
Ratio of amount of mass per volume of space occupied
Density
Resistance to changing shape, measured on the Mohs scale
Hardness
Ability to transfer energy
Conductivity
Able to be hammered into sheets without breaking apart
Malleability
Ease in changing from solid to liquid to gas
Phase Transition
Derived from electron potential energy
Electrical
Total motion of atoms and molecules
Thermal
Stored within the protons and neutrons of atoms
Nuclear
Visible light is a type of this energy
Electromagnetic
Stored within the bonds holding atoms together
Chemical
Lighting a bunsen burner (Chemical or Physical Change?)
Chemical
Boiling water (Chemical or Physical Change?)
Physical
Rusting of metal (Chemical or Physical Change?)
Chemical
Butter melting (Chemical or Physical Change?)
Physical
Compound or Element? S8
Element
Compound or Element? MgO
Compund
Compound or Element? Fe
Element
Undefined shape and comprehensible form of matter
Gas
Defined shape and incomprehensible form of matter
Solid
Undefined shape and incomprehensible form of matter?
Liquid
Particles have minimal motion with only local vibrations
Solid
Particles move freely and do not interact with each other
Gas
Particles can move about, but still collectively interact
Liquid
Is based on qualities- ice is cold, iron is denser than H2O etc.
Qualitative
Is based on numbers- 21.1 degrees C
Quantitative
An organic chemist might be found studying the natural reactions of H2O and SO2 (T or F?)
False, because organic chemistry studies carbon.
An Inorganic chemist might take a man made form of carbohydrates (sugar) like splenda. (T or F?)
False, because inorganic chemistry studies things that are not carbon based.
A biochemist might study the interactions between lipids and proteins. (T or F?)
True,
A physical chemist might develop techniques to purify a sample of water (T or F?)
False, because they study energy of a reaction
An analytical chemist might measure the amount of arsenic
True
looks like a big measuring cup
Beaker, not quantitative
looks like a test tube
Graduated cylinder, quantitative
Looks like a shot
Buret, quantitative
(T or F?) The air we breathe (Nitrogen and Oxygen) forms a homogeneous mixture
True
(T or F?) An objects mass would be considered an extensive property of matter?
True
(T or F?) Compounds can be separated by physical methods to form elements
False
(T or F?) An ion is a type of atom which contains a different number of neutrons
False
(T or F?) Macroscopically we observe rust to form because microscopically iron atoms react with oxygen molecules
True
Rewrite the number in scientific notation and rewrite using the nearest SI prefix: 1,080,000 m
- 08 x 10^6m
1. 08Mm