CHEM151 exam 1 with questions and answers (100% solved)
"1" prefix - ✔✔✔-mono
"10" - ✔✔✔-deca
"2" prefix - ✔✔✔-di
"3" - ✔✔✔-tri
"4" - ✔✔✔-tetra
"5" - ✔✔✔-penta
"6" - ✔✔✔-hexa
"7" - ✔✔✔-hepta
"8" - ✔✔✔-octa
"9" - ✔✔✔-nona
1 Celsius = ? Kelvin - ✔✔✔-274.15 K
allotropes - ✔✔✔-different forms of the same element with different physical characteristics
amorphous - ✔✔✔-case where a solid's atoms or molecules do not have any long-range order.
ex.) glass and plastic
, CHEM151 exam 1 with questions and answers (100% solved)
At same temp... - ✔✔✔-All particles have the same average KE, not all have the same velocity
At the same temperature all particles have the same? - ✔✔✔-average kinetic energy
Avogadro's law - ✔✔✔-the law that states that equal volumes of gases at the same
temperature and pressure contain equal numbers of molecules
Can particles that compose compounds be separated by physical methods? - ✔✔✔-no, only
chemical methods.
Central Goals and Questions - ✔✔✔-Detection:
Does the sample contain substance X?
Identification:
What is the identity of the substance in this sample?
Separation:
How can the substances present in the sample be separated?
Quantitation:
How much of substance X is in the sample?
chromatography - ✔✔✔-A technique that is used to separate the components of a mixture
based on the tendency of each component to travel or be drawn across the surface of another
material.
composition - ✔✔✔-the makeup of something (components)
compound - ✔✔✔-a substance made up of atoms of two or more different elements joined by
chemical bonds (fixed, definite proportions)
"1" prefix - ✔✔✔-mono
"10" - ✔✔✔-deca
"2" prefix - ✔✔✔-di
"3" - ✔✔✔-tri
"4" - ✔✔✔-tetra
"5" - ✔✔✔-penta
"6" - ✔✔✔-hexa
"7" - ✔✔✔-hepta
"8" - ✔✔✔-octa
"9" - ✔✔✔-nona
1 Celsius = ? Kelvin - ✔✔✔-274.15 K
allotropes - ✔✔✔-different forms of the same element with different physical characteristics
amorphous - ✔✔✔-case where a solid's atoms or molecules do not have any long-range order.
ex.) glass and plastic
, CHEM151 exam 1 with questions and answers (100% solved)
At same temp... - ✔✔✔-All particles have the same average KE, not all have the same velocity
At the same temperature all particles have the same? - ✔✔✔-average kinetic energy
Avogadro's law - ✔✔✔-the law that states that equal volumes of gases at the same
temperature and pressure contain equal numbers of molecules
Can particles that compose compounds be separated by physical methods? - ✔✔✔-no, only
chemical methods.
Central Goals and Questions - ✔✔✔-Detection:
Does the sample contain substance X?
Identification:
What is the identity of the substance in this sample?
Separation:
How can the substances present in the sample be separated?
Quantitation:
How much of substance X is in the sample?
chromatography - ✔✔✔-A technique that is used to separate the components of a mixture
based on the tendency of each component to travel or be drawn across the surface of another
material.
composition - ✔✔✔-the makeup of something (components)
compound - ✔✔✔-a substance made up of atoms of two or more different elements joined by
chemical bonds (fixed, definite proportions)
