Chemistry 105 Exam 1 with correct answers 100% 2026

Chemistry 105 Exam 1 with correct answers 100% 2026 sublimation - Correct Answer Solid to Gas Deposition - Correct Answer Gas to liquid Pure substance - Correct Answer substance with a consistent composition throughout the world. Example: water Mixture - Correct Answer 2 or more elements present Compound - Correct Answer Pure substance that cannot be separated into simpler substances Solution - Correct Answer Homogenous mixtures Heterogenous - Correct Answer MIxture not mixed uniformly Homogenous - Correct Answer Mixture mixed uniformly Chemical Properties - Correct Answer ability to react with other elements, Physical Properties - Correct Answer Boiling points, melting points, Density, combustion, ph, conductivity law of conservation of Mass - Correct Answer Mass cannot be created nor destroyed Definite proportions - Correct Answer always the ame proportion of atoms in a specific compound Multiple Proportions - Correct Answer proportion of elements are whole numbers Chemical Reaction - Correct Answer Change of Composition and Structure of an Element. Precision - Correct Answer How consistent Accuracy - Correct Answer How close to the desired measurement Thompson's Model - Correct Answer Plum Pudding Model Thompson Cathode ray experiment - Correct Answer ... Bohr's Model - Correct Answer Only works with electrons with Dalton - Correct Answer The concept of Atoms, law of definite proportion Milikan - Correct Answer Discovered the charge of the electron. Used the oil drop experiment Rutherford - Correct Answer the Gold foil experiment, showed that there is a large positive charge in the center of the atom. Equation for finding the abundance of isotopes - Correct Answer Molecular weight= Mass element#1(X)+Mass element#2 (X-1) Equation for Angular nodes - Correct Answer N-1 Equation for Radial Nodes - Correct Answer N-1-L Radial Node - Correct Answer A spherical space in which no electron can reside Angular Node - Correct Answer a planar space in which no electron can reside Work Function - Correct Answer ... Paramagnetic - Correct Answer 1 unpaired electron Diamagnetic - Correct Answer All electrons are paired Ionization energy - Correct Answer Minimum energy needed to ionize an electron Z effective - Correct Answer Number of Protons - Number of Core electrons. The attraction exerted by the Protons on the Electrons For elements on N level, as the number of protons increase, it will exert more force on the electrons and the radius will be smaller. Fuel Values - Correct Answer increasing carbon number leads to decreasing fuel value Isothermic - Correct Answer constant temperature Spontaneous reaction in enthalpy - Correct Answer Delta S Universe is greater than O Correlation between enthalpy and Entropy in reversable reactions - Correct Answer Delta S= Q/T