Chemistry 201 Test with Questions and Correct Solutions Exam Bundle

Molecule - A molecule is defined as two or more atoms joined by strong forces called chemical bonds. Which of the following is the correct relationship between weight and mass? - weight=mass×gravity The smallest particle of an element that has the properties of that element is called a(...

any pure substance that is not a mixture and is not a compound must be an - element the elements that comprise a compound can only be separated from one another by a - chemical reaction which of the following is an example of a semi metal or matalloid? a)phosphorus b)selenium c)tell...

linear - 2 stereoactive pairs trigonal planar - 3 stereoactive pairs tetrahedral - 4 stereoactive pairs trigonal bipyramidal - 5 stereoactive pairs octahedral - 6 stereoactive pairs dipole moment - determined by geometry and electronegativity # of stereoactive pai...

chemistry - study of the composition, properties, and interactions of matter observation - single measurement or event hypothesis - -tentative explanation -must be falsifiable -narrow in scope -never proven correct experiment - test hypothesis - supports or disproves hypothes...

Compound - Matter which cannot be futher seperated by physical means but which can be seperated by chemical means Element - Cannot be seperated into a simpler substance by chemical means Theory - Unifying principle that explains a body of experimental observations Hypothesis - D...

atomic # - number of protons mass # - number of protons and neutrons isotopes - atoms with the same atomic number but different mass numbers cation - a positively charged ion anion - a negatively charged ion periods - horizontal rows of the periodic table groups (...

What is the principle of the direct or homogeneous HDL cholesterol automated method, which requires no intervention by the laboratorian? The direct HDL method - B. Utilizes polymers and detergents that make the HDL cholesterol soluble while keeping the other lipoproteins insoluble. Which of th...

Physical properties can be observed without chemically changing matter. - What is the definition of physical properties? Chemical properties describe how a substance interacts with other substances. - What is the definition of chemical properties? - malleability - density - color -...