Compounds and mixtures 2 - Study guides, Class notes & Summaries

How many steps are there in the scientific method? - ANSWER-5 What are the 5 steps to scientific method? - ANSWER-1. make an observation 2. ask a question 3. form a hypothesis 4. conduct an experiment 5. analyze the data and draw a conclusion What is a physical change? - ANSWER-A change in the size and shape of an object and no new substance is formed. What is a chemical change? - ANSWER-Any change that forms a new substance. What are the 3 phase changes? - ANSWER-boiling, conden...

DAT Organic Chemistry Review Practice Test. Which are more stable conformers - CORRECT ANSWER staggered What are the rate laws of SN2 and E2 reactions - CORRECT ANSWER rate= k [RX][Nu:-] rate depends on concentrations of alkyl halide and nucleophile What are the rate laws of SN1 and E1 reactions - CORRECT ANSWER rate= k[RX] rate only depends on the concentration of the alkyl halide E2 elimination reactions must occur in bonds that are - CORRECT ANSWER coplanar or antiperiplan...

NAS 2 Challenge Exam (2023/2024 Update) | 100% Correct | Complete Guide with Questions and Verified Answers QUESTION Components of a chemical reaction Answer: the reactants (goes in) and products (goes out) QUESTION Patterns of Chemical Reactions Answer: 1) Synthesis (combination) reactions 2) Decomposition reactions 3) Exchange reactions QUESTION endergonic reaction Answer: Reaction that absorbs free energy from its surroundings. QUESTIO...

1. How long is Paper 1, and what does it assess? - Ans .Paper 1 of the AQA GCSE Higher Chemistry (Single Science) course lasts for 1 hour and 45 minutes, and assesses content from Atomic Structure & The Periodic Table; Bonding, Structure & The Properties of Matter; Quantitative Chemistry, Chemical Changes; and Energy Changes. 2. What is the radius of an atom? - Ans .The radius of an atom is 0.1 nanometers (1x10^-10m). 3. What are the masses and charges of the three subatomic particles th...

GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Version: 1.0 Final *JUN238464C2H01* IB/M/Jun23/E7 8464/C/2H For Examiner’s Use Question Mark 1 2 3 4 5 6 TOTAL Tuesday 13 June 2023 Morning Time allowed: 1 hour 15 minutes Materials For this paper you must have: • a ruler • a scientific calculator • the periodic table (enclosed). Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at t...

Chemistry 115 Final Exam Questions with Verified Solutions Any ionic compound containing group IA or NH4+ cations are.... Always Soluble Ionic compounds containing NO3-, NO2-, ClO3-, ClO4-, C2H3O2-, & HCO3- anions are Always Soluble Ionic compounds containing Cl-, Br-, & I- anions are soluble EXCEPT when combined with... Ag, Hg, and Pb cations Ionic compound containing SO4^2- are soluble EXCEPT when combined with... Ag, Hg, Pb, Ca, Sr, Ba Ionic compounds containing So3^2-, S^2-, CO3^2-, PO4^...

CHEM 237 Final Review TAMU Questions and Answers Already Graded A Which reagent is not an oxidizing agent? a. NaOCl b. KMnO4 c. K2Cr2O7 d. CrO3 e. H2O H2O Which statement is false about preparing alkyl halide from alcohol with hydrogen halide? a. it is an SN1 reaction b. tertiary alcohols react faster than secondary alcohols c. the intermediate is a carbocation d. alkyl halide is soluble in conc. HCl e. in the reaction, the slowest step is the formation of a carbocation alkyl halide is...

strongest interparticle force out of all the states of matter? ANSWER: solids weakest interparticle force out of all the states of matter? ANSWER: gases What are the 2 types of pure substances? ANSWER: compounds and elements What are the two types of mixtures? ANSWER: homogeneous and heterogeneous Define a pure substance ANSWER: a substance with uniform composition, meaning that it will have the same properties regardless of the size of the sample or where the sample is taken De...

1. particles are arranged in a random fashion ANS Amorphous solids 2. physical properties of solvents that are dependent on the concentration of the solute present and the identity of the solvent but not on the identity of the solute. They include vapor pressure, freezing point and boiling point ANS Colliga- tive properties 3. heterogeneous mixtures which appear to homogeneous one-phase mix- tures but are actually composed of particles too small to be seen with the naked eye ANS Colloids 4...

Aviation Ordnance Unit 4 Exam with Questions and Answers Characteristics of Ammunition ANSWER Insensitive, powerful enough to produce damage, and must be able to remain stable over an extended period. 2 General Classes of Explosives ANSWER High and Low explosives High Explosive ANSWER virtually instantaneous, rapid expansion of large volumes of gas and heat, causing a very high pressure and widespread shattering effect. "Big Boom" Low Explosive ANSWER Ignited by flame and burns...