Chapter 3
... balanced chem eqn to determine how many mol of R2 is required to react completely with R1. Do you have enough R2? If not, R2 = limiting reactant = LR and R1 = reactant in excess = XS. • Always use the LR to solve the stoichiometric problem to find the amount of product formed. • Calculate the amount ...
... balanced chem eqn to determine how many mol of R2 is required to react completely with R1. Do you have enough R2? If not, R2 = limiting reactant = LR and R1 = reactant in excess = XS. • Always use the LR to solve the stoichiometric problem to find the amount of product formed. • Calculate the amount ...
Chapter 14 – Chemical Reactions
... Reactants – the _____________ materials of a chemical _____________ Products – the substances _____________ as a _____________ of a chemical _____________ Coefficient – a _____________ placed in _____________ of a chemical _____________ or _____________ All chemical equations must be balanced. Steps ...
... Reactants – the _____________ materials of a chemical _____________ Products – the substances _____________ as a _____________ of a chemical _____________ Coefficient – a _____________ placed in _____________ of a chemical _____________ or _____________ All chemical equations must be balanced. Steps ...
Atomic Structure, Molecular Structure & Bonding
... – H is never central; C is often central 3. Draw in electrons to fulfill octet and duet rules – C “likes” 8 electrons; H “likes” 2 electrons 4. Count ve-’s and compare to #2 5. If too many e-’s, make a double bond 6. Calculate formal charge (FC) to double check structure – No or low FCs (e.g. +1) mo ...
... – H is never central; C is often central 3. Draw in electrons to fulfill octet and duet rules – C “likes” 8 electrons; H “likes” 2 electrons 4. Count ve-’s and compare to #2 5. If too many e-’s, make a double bond 6. Calculate formal charge (FC) to double check structure – No or low FCs (e.g. +1) mo ...
AP CHEMISTRY SUMMER ASSIGNMENT
... The Law of Conservation of Mass: mass is neither lost nor gained during an ordinary chemical reaction. In other words, the products of a reaction must have the same number of type of atoms as the reactants. Law of Definite Proportion: a given compound always contains exactly proportions of elements ...
... The Law of Conservation of Mass: mass is neither lost nor gained during an ordinary chemical reaction. In other words, the products of a reaction must have the same number of type of atoms as the reactants. Law of Definite Proportion: a given compound always contains exactly proportions of elements ...
2 KClO 3
... number comes from. •Earlier we said "Let one atom of H have 1 atomic mass unit" •Now, we have a problem, because H has 3 isotopes: •So.....we cannot use "hydrogen" as it usually exists (mixed isotopes) for our mass standard. •We must purify it. •Easier to purify carbon, so carbon became the mass sta ...
... number comes from. •Earlier we said "Let one atom of H have 1 atomic mass unit" •Now, we have a problem, because H has 3 isotopes: •So.....we cannot use "hydrogen" as it usually exists (mixed isotopes) for our mass standard. •We must purify it. •Easier to purify carbon, so carbon became the mass sta ...
R E V I E W -- P R A C T I C E E X A
... 79. The periodic law states that: a. The physical/chemical properties of the elements are periodic functions of their atomic number b. no two electrons with the same spin can be found in the same place at the same time. c. Electrons exhibit properties of both particles and waves. d. The chemical pro ...
... 79. The periodic law states that: a. The physical/chemical properties of the elements are periodic functions of their atomic number b. no two electrons with the same spin can be found in the same place at the same time. c. Electrons exhibit properties of both particles and waves. d. The chemical pro ...
Balancing Equations
... Chemical Equations A chemical equation is written as an expression similar to a mathematic equation that can be compared to a recipe that a chemist follows in order to produce desired results. ...
... Chemical Equations A chemical equation is written as an expression similar to a mathematic equation that can be compared to a recipe that a chemist follows in order to produce desired results. ...
The Mole - Rothschild Science
... 10 million per second, it would take about 2 billion years to count the atoms in one mole. ...
... 10 million per second, it would take about 2 billion years to count the atoms in one mole. ...
Chapter 7: Chemical Formulas and Chemical Compounds
... G. Covalent-Network Compounds 1. Some covalent molecules do not exist of individual molecules. They instead are part of a 3 dimensional network. 2. When this occurs the lowest ratio is given and then named just as binary covalent compounds are. H. Acids and Salts 1. An acid is a distinct type of com ...
... G. Covalent-Network Compounds 1. Some covalent molecules do not exist of individual molecules. They instead are part of a 3 dimensional network. 2. When this occurs the lowest ratio is given and then named just as binary covalent compounds are. H. Acids and Salts 1. An acid is a distinct type of com ...
Unit 1 PowerPoint Complete Notes
... Several of the transition metals have more than one possible ion charge. They are often referred to as being multivalent. For example, Ion ...
... Several of the transition metals have more than one possible ion charge. They are often referred to as being multivalent. For example, Ion ...
Name - TeacherWeb
... Phosphorus is the other nonmetal in the nitrogen family. It is much more reactive than nitrogen. Group 16 (Oxygen Family) contains three nonmetals – oxygen (O), sulfur (S), and selenium (Se). Like nitrogen, oxygen is a diatomic molecule (O2). Oxygen can also form a triatomic (three-atom) molecule (O ...
... Phosphorus is the other nonmetal in the nitrogen family. It is much more reactive than nitrogen. Group 16 (Oxygen Family) contains three nonmetals – oxygen (O), sulfur (S), and selenium (Se). Like nitrogen, oxygen is a diatomic molecule (O2). Oxygen can also form a triatomic (three-atom) molecule (O ...
Chemistry Fall Final Review 2012-2013 Alchemy Unit
... 1. Using the periodic table, where are the metals and nonmetals? What is hydrogen? Metals are in the left side of the periodic table. Nonmetals are on the right side of the periodic table. Hydrogen is an nonmetal. 2. Where are the alkali, alkaline earth, transition metals, halogens, and noble gases? ...
... 1. Using the periodic table, where are the metals and nonmetals? What is hydrogen? Metals are in the left side of the periodic table. Nonmetals are on the right side of the periodic table. Hydrogen is an nonmetal. 2. Where are the alkali, alkaline earth, transition metals, halogens, and noble gases? ...
Chapter 1: Quiz Review - Wetaskiwin Composite High School
... 12. Identify the isotope whose atom fits this description: mass number 30: atomic number 14. A. Silicon – 30 C. Silicon – 14 B. Zinc – 14 D. Zinc – 30 13. An atom has a mass number of 24 and atomic number 11. Which description below would be part of Bohr’s model of this atom? A. The atom has 11 prot ...
... 12. Identify the isotope whose atom fits this description: mass number 30: atomic number 14. A. Silicon – 30 C. Silicon – 14 B. Zinc – 14 D. Zinc – 30 13. An atom has a mass number of 24 and atomic number 11. Which description below would be part of Bohr’s model of this atom? A. The atom has 11 prot ...
2. Essential Chemistry
... o The plus sign (+) means “react” and the arrow points towards the substance produce in the reaction o The chemical formulas on the right side of the equation are called reactants and after the arrow are called product o The numbers in front of the molecules or atoms indicate the number of individua ...
... o The plus sign (+) means “react” and the arrow points towards the substance produce in the reaction o The chemical formulas on the right side of the equation are called reactants and after the arrow are called product o The numbers in front of the molecules or atoms indicate the number of individua ...
Chemistry - School District of Springfield Township
... gamma waves/particles by an unstable nucleus of an atom. This is deemed radioactivity. o The half-life of a radioactive element is the time it takes for one-half of the unstable nuclei in a sample to decay. o This reaction (either through fission or fusion) can convert a small mass into a large amou ...
... gamma waves/particles by an unstable nucleus of an atom. This is deemed radioactivity. o The half-life of a radioactive element is the time it takes for one-half of the unstable nuclei in a sample to decay. o This reaction (either through fission or fusion) can convert a small mass into a large amou ...
AP Chemistry Summer Assignment - Belle Vernon Area School District
... 2. You need to master the formulas, charges, and names of the common ions. On the first week of the school year, you will be given a quiz on these ions. You will be asked to: • write the names of these ions when given the formula and charge • write the formula and charge when given the names I have ...
... 2. You need to master the formulas, charges, and names of the common ions. On the first week of the school year, you will be given a quiz on these ions. You will be asked to: • write the names of these ions when given the formula and charge • write the formula and charge when given the names I have ...
Boron Group Compounds Oxidation States Boron
... explained by the inert pair effect (results from the ionization energies of the 2nd and 3rd electrons in period 4 and heavier pblock elements being higher than expected). ...
... explained by the inert pair effect (results from the ionization energies of the 2nd and 3rd electrons in period 4 and heavier pblock elements being higher than expected). ...
Ch. 7 & 8 Notes (Chemical Reactions) teacher
... cross must look up the ___________ them if they are different!! Balance it _________ AFTER you get all the correct formulas written first! Don’t forget about the HONClBrIF’s! ...
... cross must look up the ___________ them if they are different!! Balance it _________ AFTER you get all the correct formulas written first! Don’t forget about the HONClBrIF’s! ...
Chemistry EOC Review
... 325mm Hg to 550mm Hg, what is the new volume of the gas? 80) A sample of gas has a volume of 140.0mL at 67C. To what temperature must the gas be lowered to reduce its volume to 50.0 mL at constant pressure? 81) A sample of gas at 47C and 780.mm Hg pressure occupies a volume of 2.20L. What volume w ...
... 325mm Hg to 550mm Hg, what is the new volume of the gas? 80) A sample of gas has a volume of 140.0mL at 67C. To what temperature must the gas be lowered to reduce its volume to 50.0 mL at constant pressure? 81) A sample of gas at 47C and 780.mm Hg pressure occupies a volume of 2.20L. What volume w ...
Chemical laboratories Dipl.-Ing.(FH) Giovanna
... Sugar and lactic acid analysis by HPLC Ultimate 3000 from Dionex ...
... Sugar and lactic acid analysis by HPLC Ultimate 3000 from Dionex ...
Mass of individual atoms
... I have 10g of strontium 90 today, in 29 years I will have half i.e. 5g After another 29 years, 2.50 g remains After another 29 years, 1.25 g remains After another 29 years, 0.625 g remains Decay continues till almost nothing is left ...
... I have 10g of strontium 90 today, in 29 years I will have half i.e. 5g After another 29 years, 2.50 g remains After another 29 years, 1.25 g remains After another 29 years, 0.625 g remains Decay continues till almost nothing is left ...
Predicting Products online assistance #3
... 3. single replacement - an element replaces another in a compound. 4. double replacement - the elements in two compounds switch partners to form two new compounds. Writing Balanced Equations A chemical reaction is the process by which one or more substances are changed into one or more different sub ...
... 3. single replacement - an element replaces another in a compound. 4. double replacement - the elements in two compounds switch partners to form two new compounds. Writing Balanced Equations A chemical reaction is the process by which one or more substances are changed into one or more different sub ...
CHEMISTRY
... the periodic table. Patterns help reduce the amount of things we need to memorize and also allow us to acquire information quickly. For example, knowing that an element is in group 2 tells us a lot about that element. We know it has two valence electrons, it’s a fairly reactive metal and it forms an ...
... the periodic table. Patterns help reduce the amount of things we need to memorize and also allow us to acquire information quickly. For example, knowing that an element is in group 2 tells us a lot about that element. We know it has two valence electrons, it’s a fairly reactive metal and it forms an ...
How to Balance Chemical Equations
... inventory on that side of the chemical equation. Repeat the process until total number of atoms for each element perfectly matches on both sides of the chemical equation. ...
... inventory on that side of the chemical equation. Repeat the process until total number of atoms for each element perfectly matches on both sides of the chemical equation. ...