CHEM 105 EXAM 1 UWEC QUESTIONS
AND ANSWERS
Solid - Correct Answers -Fixed shape and volume
Liquid - Correct Answers -A state of matter that has a definite volume but no definite
shape.
Gas - Correct Answers -A state of matter with no definite shape or volume
Pure Substance - Correct Answers -A sample of matter, either a single element or a
single compound, that has definite chemical and physical properties
Mixtures - Correct Answers -A combination of two or more pure substances that are not
chemically combined
homegeneous mixture - Correct Answers -Has the same uniform apperance and
compostion throughout
heterogeneous mixture - Correct Answers -A mixture in which different materials can be
distinguished easily, not uniform throughout
periodic table 1A, 2A, ect. - Correct Answers -1A loses one e-, 2A loses 2 e-, ect.
Isotopic composition - Correct Answers -the quantitative makeup of an element's stable
isotopes, in terms of percent abundance and mass
Anion - Correct Answers -A negatively charged ion
Making ions - Correct Answers -Atoms gain or lose an electron to get the same total as
the nearest noble gas
Element - Correct Answers -A pure substance that cannot be broken down into simpler
substances
Compound - Correct Answers -A substance made up of atoms of two or more different
elements joined by chemical bonds
AND ANSWERS
Solid - Correct Answers -Fixed shape and volume
Liquid - Correct Answers -A state of matter that has a definite volume but no definite
shape.
Gas - Correct Answers -A state of matter with no definite shape or volume
Pure Substance - Correct Answers -A sample of matter, either a single element or a
single compound, that has definite chemical and physical properties
Mixtures - Correct Answers -A combination of two or more pure substances that are not
chemically combined
homegeneous mixture - Correct Answers -Has the same uniform apperance and
compostion throughout
heterogeneous mixture - Correct Answers -A mixture in which different materials can be
distinguished easily, not uniform throughout
periodic table 1A, 2A, ect. - Correct Answers -1A loses one e-, 2A loses 2 e-, ect.
Isotopic composition - Correct Answers -the quantitative makeup of an element's stable
isotopes, in terms of percent abundance and mass
Anion - Correct Answers -A negatively charged ion
Making ions - Correct Answers -Atoms gain or lose an electron to get the same total as
the nearest noble gas
Element - Correct Answers -A pure substance that cannot be broken down into simpler
substances
Compound - Correct Answers -A substance made up of atoms of two or more different
elements joined by chemical bonds
