Papersbylee

Density - ANSWERmass/volume Law of Conservation of Mass - ANSWERmass reactants= mass products Law of Multiple Proportions - ANSWERatoms combine in fixed whole # ratios Alkali metals - ANSWERGroup 1 metals Alkaline earth metals - ANSWERGroup 2 metals Transition metals - ANSWERelements in groups 3-12 mol - ANSWER6.022x10^23 Limiting reactant - ANSWERreactant that's completely used up in a chemical reaction excess reactant - ANSWERreactant which doesn't get used up complet...

Scientific notation - ANSWERthe term for a method of expressing numbers by moving the decimal places after the first significant digit and indicating the number of decimal moves by a power of 10 cm^3 - ANSWERa unit that expresses the volume occupied by a cube 1 centimeter on each side. density - ANSWERThe amount of mass in a unit volume. gas - ANSWERa physical state described as having a variable shape and a variable volume. compound - ANSWERThe term for a pure substance that can be ...

Aufbau Principle - ANSWERelectrons fill the lowest energy orbitals first Hund's rule - ANSWERwhen there are two or more orbitals of the same energy available, electrons will go into separate orbitals before pairing up Valance electrons - ANSWERelectrons on the outermost shell of an atom Covalent bonds - ANSWERelectrons are shared between atoms to complete their octet Common bonding pattern of Carbon - ANSWER4 bonds, 0 lone pairs Common bonding pattern of Nitrogen - ANSWER3 bonds,...

Lab Safety Rules of Science - ANSWER-Add acid to water because if you add water to acid, it can boil over and explode. -Wear goggles with side shields to protect your eyes. -Reagents-Container -It is not safe to eat, drink or put on makeup because it can contaminated. -Hold the specimen at a safe distance and wafe the chemical. DO NOT SMELL THE CHEMICAL! -Wear long sleeves, old clothes, long pants and aprons. -Long hair-Tie back long hair Jewelry-Take off all jewelry and watches Contact ...

Diatomic 7 - ANSWERH, N, O, F, Cl, Br, I Density Formula - ANSWERMass/volume 1 Mole Measurement - ANSWER6.02 x 10^23 1 Mole of Gas At STP - ANSWER22.4 L Standard Temperature - ANSWER0C/273K Standard Pressure - ANSWER101.3kPa/14.7psi/760 mm Hg/29.92 in Hg Molarity (M) - ANSWERMoles solute/L solution molality (m) - ANSWERmoles solute/kg solvent SI Base Unit - Length - ANSWERMeter (m) SI Base Unit - Mass - ANSWERKilogram (kg) SI Base Unit - Time - ANSWERSecond (s) S...

Which of these properties is the best one to use for identification of an element? the number of neutrons in the atomic nucleus the number of protons in the atomic nucleus the number of isotopes that are formed by the element the number of charges on ions of the element - ANSWERB. the number of protons in the atomic nucleus Which characteristic best identifies an Arrhenius base? It must donate electrons to form a covalent bond. It must accept protons from an acid. It must generate hydr...

What is a pure substance? - ANSWERsubstance made of one element What is a mixture? - ANSWERcombo of pure substances What is a homogenous substance - ANSWERevenly distributed particles at microscopic level Hetergenous - ANSWERparticles are not evenly distributed at the microscopic level - usually can see different particles What are chemical properties? - ANSWERCharges forming compounds reacts inert or not burning What are physical properties? - ANSWERState (solid, liquid, gas)...

Which hydrocarbon is 84.1% carbon by mass? (A) CH4 (B) C2H6 (C) C4H10 (D) C8H18 - ANSWER(D) C8H18 Lithium hydrogen carbonate, LiHCO3, decomposes when heated to form Li2O, CO2, and H2O. How many moles of H2O are formed when 0.50 mol LiHCO3 decomposes? (A) 0.25 mol (B) 0.50 mol (C) 0.75 mol (D) 1.0 mol - ANSWER(A) 0.25 mol A vessel contains 66 g CO2 and 16 g O2 at a pressure of 10.0 atm. What is the partial pressure of CO2? (A) 5.0 atm (B) 6.0 atm (C) 7.5 atm (D) 8.0 atm - ANSWER First...

Chemistry - ANSWERScience that deals with the structure and properties of substances and with the changes that they go through; how things are built and how we change them Inorganic chemistry - ANSWERChemistry of everything non-carbon containing Organic chemistry - ANSWERChemistry of carbon-containing compounds Biochemistry - ANSWERChemistry of living organisms Physical Chemistry - ANSWERStudy of physics applied to chemistry Analytical Chemistry - ANSWERStudy of the analysis techn...

Which of the following statements about the phases of matter is true? - ANSWERIn both solids and liquids, the atoms or molecules pack closely to one another. An atom that has lost an electron is... - ANSWERA cation Two or more substances in variable proportions, where the composition is inconsistent throughout are? - ANSWERA heterogeneous mixture Identify the charges of the protons,neutrons and electrons. - ANSWERProtons +1, neutrons 0, electrons -1 All of the following are SI base u...