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Chemistry Final

This covers Chapters 1,2, and 3 of the entire semester

QuestionAnswer
What is Density? The object that is measured by mass per unit volume.
What is the formula for Density? D = M/V
What is the formula for finding Fahrenheit from Celsius? Tf = (tc = 9 degrees F/ 5 degrees C) + 32
What is the formula for finding Kelvin from Celsius? Tk = (tc * 1K/1 degree C) + 273.15 K
When converting between temperature units, what's the formula for finding Celsius from Fahrenheit? Tc= (Tf -32 degrees F) multiplied by 5/9
When converting between temperature units, what's the formula for finding Celsius from Kelvin? Tk = (Tc * 1K/1 degree C) + 273.15K
What are the fundamental laws of Chemistry ? The Law of Conservation of Mass, Law of Constant Composition, and Law of Definite Proportions.
What are the three states of matter? Solid, Liquid, and Gas
In the periodic table, the elements are arranged in _______. Order of increasing atomic number.
An element cannot _____. Be separated into other substances by chemical means.
The law of Constant Composition says ____. That the composition of a compound is always the same.
How do you solve for volume in a density formula? V= m/d
Elements _______ exhibit similar physical and chemical properties. In the same group of the periodic table.
The elements in groups 1A, 6A, and 7A are called _______, respectively. Alkali metals, chalcogens, and halogens.
Which pair of elements below should be the most similar in chemical properties? I and Br
An element in the upper right corner of the periodic table____. Is definitely a nonmetal.
Aluminum reacts with a certain nonmetallic element to form a compound with the general formula Al2X3. Element X must be in Group _______ of the Periodic Table of Elements. 6A
Of the following, only ______ is an extensive property. Volume
Of the following, only _____ is an intensive property. Density
What is the difference between physical and chemical processes? A physical process involves changes in the physical property (like state or appearance), but the composition of the substance remains the same. A chemical process involves the formation of new substances.
Which of the following are chemical properties? 1. Rusting nail 2. Freezing of water 3. Decomposition of water into hydrogen and oxygen gases 4. Compression of oxygen gas 1,3
Which formula/name pair is incorrect? Fe2(SO4)3 Iron (III) sulfide
What is a Heterogenous mixture? A mixture that consists of physically distant parts, each w/ different property.
What is Homogenous mixture? A mixture that is uniform in its properties; also called a solution.
A combination of sand, salt, and water is an example of a _____. Heterogenous mixture
When sodium chloride is dissolved in water that is an example of a _______. Homogenous mixture
Which one of the following is NOT an intensive property? Mass
An atom of the most common isotope of gold, Au (197), has _____ protons, ______ neutrons, and _______ electrons. 79,118,79
What is a chemical reaction? It involves the rearrangement of atoms present in the reacting substances to give new chemical combinations present in the substances formed by the reaction.
What is the Law of Multiple Proportions? It's when two elements form more than one compound, and the masses of one element in these compounds are fixed masses of the other element.
What is Dalton's Atomic theory? The explanation of the structure of matter in terms of different combinations of very small particles.
What is Atomic Mass Unit? It is a mass unit that's equal to exactly 1/12 of the mass of a carbon-12 atom. (amu)
What is Atomic Weight? It is an average atomic mass for an element.
What is a chemical formula? A substance is a notation that uses atomic symbols with numerical subscripts to convey the relative proportions of atoms of the different elements in the substance.
What is Avagado's number? Na= 6.02 x 10 (to the 23).
How do you find percentage by mass? Mass % A = mass of A in the whole/mass of the whole (multiplied by) 100%
How do you find Formula weight? By adding all atomic weights of all atoms in a formula unit.
What is Empirical Formula? The formula of substance written with the smallest integer subscripts.
What is the Empirical Formula for Hg2(NO30)2? HgNO3
How do you calculate Molar Mass? You find the atomic weight add all of them together.
What is the formula in converting moles to grams? Grams = moles/ molar mass
Define an Arrhenius acid? produces H+ ions in aqueous solution
The formula weight of a substance is _______. The sum of the atomic weights of each atom in its chemical formula
Oxidation cannot occur without ________. reduction
What is Stoichiometry? The calculation of the quantities of reactants and products involved in a chemical reaction.
What are the four different types of chemical reactions? Combinations of Synthesis, Decompositions Reactions, Substitutions (Single Displacement), Metathesis (Double Displacement)
What is the prefix for number 1? mono-
What is the prefix for number 2? di-
What is the prefix for number 3? tri-
What is the prefix for number 4? tetra-
What is the prefix for number 5? penta-
What is the prefix for number 6? hexa-
What is the prefix for number 7? hepta-
What is the prefix for number 8? octa-
What is the prefix for number 9? nona-
What is the prefix for number 10? deca-
Example of a Stoichiometry equation? Calculating the amount of Fe2O3 required to produce 1.00 kg of iron 1.00 * 10 (to the 3) g Fe2 O3 * 1mol Fe2O3/160.0g Fe2 O3 * 2mol Fe/ 1mol Fe2O3 * 55. 8g Fe/1mol Fe = 698g Fe
Created by: maylee887
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