CHEM 120 FINAL EXAM REVIEW
• homogeneous mixture
Answer: uniform mixture which contains only one phase
• solution
Answer: another word for homogeneous mixture, but usually refers to a liquid
mixture
• compound mixtures
Answer: The following are characteristics of:
-pure substance
-2+ elements chemically combined
-final compound does NOT have properties of original
-cannot be separated by physical methods
• homogeneous mixtures
Answer: -NOT pure substance
-2+ substances physically combined
-final mix has the properties of each of the components that make it up
-can be separated by physical means
• acid
Answer: molecular compound made by combining H+ ions with a monoatomic or
polyatomic ion
• naming
Answer: -If the anion name ends in "-ite," the acid name ends in "-ous"
-If the anion name ends in "-ate," the acid name ends in "-ic"
• mole
Answer: the number of atoms represented by atomic mass of an element
, • molar mass
Answer: the atomic mass of the element expressed in grams
• formula weight
Answer: mass of one molecule of formula unit of a compound (in amu)
• mole ratio
Answer: relationship between the number of moles of an element and a moleof the
compound containing it
• empirical formula
Answer: simplest whole-number ratio of atoms in a compound
• law of conservation of mass
Answer: mass can neither be created nor destroyed
• types of chemical equations
Answer:
1. combustion
2. combination
3. decomposition
4. single replacement
5. double replacement
• combustion
Answer: reaction with O2
• combination
Answer: the formation of a single compound by combining 2 or moreelements or
simpler compounds
• decomposition
Answer: when a single compound splits into 2 or more elements orsimpler
compounds
• homogeneous mixture
Answer: uniform mixture which contains only one phase
• solution
Answer: another word for homogeneous mixture, but usually refers to a liquid
mixture
• compound mixtures
Answer: The following are characteristics of:
-pure substance
-2+ elements chemically combined
-final compound does NOT have properties of original
-cannot be separated by physical methods
• homogeneous mixtures
Answer: -NOT pure substance
-2+ substances physically combined
-final mix has the properties of each of the components that make it up
-can be separated by physical means
• acid
Answer: molecular compound made by combining H+ ions with a monoatomic or
polyatomic ion
• naming
Answer: -If the anion name ends in "-ite," the acid name ends in "-ous"
-If the anion name ends in "-ate," the acid name ends in "-ic"
• mole
Answer: the number of atoms represented by atomic mass of an element
, • molar mass
Answer: the atomic mass of the element expressed in grams
• formula weight
Answer: mass of one molecule of formula unit of a compound (in amu)
• mole ratio
Answer: relationship between the number of moles of an element and a moleof the
compound containing it
• empirical formula
Answer: simplest whole-number ratio of atoms in a compound
• law of conservation of mass
Answer: mass can neither be created nor destroyed
• types of chemical equations
Answer:
1. combustion
2. combination
3. decomposition
4. single replacement
5. double replacement
• combustion
Answer: reaction with O2
• combination
Answer: the formation of a single compound by combining 2 or moreelements or
simpler compounds
• decomposition
Answer: when a single compound splits into 2 or more elements orsimpler
compounds
