Chem 105 Midterm Exam Review with correct answers 100% 2026

Chem 105 Midterm Exam Review with correct answers 100% 2026 Chemistry - Correct Answer Study of matter and its interactions with other matter and with energy Matter - Correct Answer Anything that has mass and occupies space Scientific Method - Correct Answer Observation Hypothesis Experiments Publication Confirmation Application Natural Sciences - Correct Answer Geology Physics Astronomy Chemistry Biological Sciences - Correct Answer Zoology Botony Basic Science Research - Correct Answer Research w/o goal of practical application Applied Science Research - Correct Answer Research with well defined, short term goals for a specific problem Technology Research - Correct Answer Application of science for industrial production and societal goals Macroscopic Matter - Correct Answer Large enough to be seen with the naked eye Microscopic Matter - Correct Answer Seen only with the aid of a microscope Submicroscopic Matter - Correct Answer Can only be observed indirectly Properties of Matter - Correct Answer Mass - Amount/quantity of matter in object Weight - Force between the matter and Earth Intensive Property - Correct Answer Properties independent of amount of sample Example - Concentration, density, color, boiling point Extensive property - Correct Answer Depends on size of sample Example - Mass, volume, energy Elements - Correct Answer A pure substance consisting of only one kind of atom (i.e. copper) and can not be decomposed into simpler substances by normal chemical means Atoms - Correct Answer Smallest unit of an element (i.e. copper) Pure Substance - Correct Answer Matter with fixed composition at the submicroscopic level (i.e. copper) Chemical Compounds - Correct Answer Pure substances composed of atoms of different elements combined in definite, fixed ratios. And can be decomposed into simpler substances or elements by chemical means Example - H20 is a pure substance but NOT an element Solutions - Correct Answer Homogeneous mixtures of different compounds (may or may not be pure substances) combined so the composition is uniform. Ex - 14c gold is a solution of pure gold, copper, nickel, and zinc Purifying Solutions - Correct Answer Can be purified by separation techniques Ex - Methanol/water solution by distillation (heating and collecting the methanol vapor) Separation - Correct Answer Separation of mixtures is accomplished by taking advantage of different properties of the individual components Chemical Property - Correct Answer Properties resulting from a chemical reaction converting the identity of 1(+) substances Ex - Flammability, anti-inflammatories, biodegradability Physical Property - Correct Answer Properties that can be observed/measured without changing the identity of the substance Ex - Boiling point, melting point, density, and color Chemical Change - Correct Answer Process in which 1(+) pure substance is converted to 1(+) different pure substance