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Chemistry

Mass Relationships in Chemical Reactions Practice QuestionsG

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Chemistry
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Stoichiometry
Chemistry
Chemical properties
Mass
Chemical formulas
Yield
Atomic mass
Mole
Limiting reagent
Conversion
Mass fraction
Molar mass

Atomic mass mass of an atom in atomic mass units An atomic mass unit is equal to? One twelth the mass of one carbon-12 atom The average atomic mass is equal to? atomic mass on the periodic table Isotopes are atoms of the same element with a different number of ___ and so they have different ___ 1) neutron 2) masses Mole Is a counter and relates to mass.* It is similar to a dozen. *It can count the number atoms/molecules/particles. Molar Mass *is the mass of one mole of the substance. *g/mol = atomic mass of the element *molar mass of an element contains mols of atoms Avogadro's number particles/atoms/molecueles > moles *6.022x10^23 Percent Composition Mass of element/ mass of compound x 100 Tell how much an element contributes to the mass of the compound

Macromolecules worksheet

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Biology
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metabolism
Catalysis
Chemistry
Biomolecules
Enzyme
Macromolecule
Chemical reaction
Protein
Biomolecular engineering

Macromolecules What are ____________? ____________ are made from thousands or even hundreds of thousands of smaller molecules. Macromolecules are formed by a process known as ____________ in which large compounds are built by joining smaller ones together. Made up ____________, which form ____________. ____________ Groups of Macromolecules There are four groups of macromolecules that make up living things: ____________, ____________, ____________and ____________. Carbohydrates Made up of ____________. Subunit: mono____________ Use for a sources of ____________ Use for ____________ in plants (____________), animals (____________), fungi (____________) and bacteria (____________). Examples: monomers- ____________ ____________- lactose Polymers ?____________

Macromolecules review

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Biology
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metabolism
Catalysis
Chemistry
Biomolecules
Enzyme
Macromolecule
Chemical reaction
Protein
Biomolecular engineering

Macromolecules What are ____________? ____________ are made from thousands or even hundreds of thousands of smaller molecules. Macromolecules are formed by a process known as ____________ in which large compounds are built by joining smaller ones together. Made up ____________, which form ____________. ____________ Groups of Macromolecules There are four groups of macromolecules that make up living things: ____________, ____________, ____________and ____________. Carbohydrates Made up of ____________. Subunit: mono____________ Use for a sources of ____________ Use for ____________ in plants (____________), animals (____________), fungi (____________) and bacteria (____________). Examples: monomers- ____________ ____________- lactose Polymers ?____________

AP Chemistry MIDTERM review A

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Chemistry
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Chemical elements
Diatomic molecule
molecular geometry
Stereochemistry
Industrial gases
Isoelectronicity
ion
Boron
Chemistry
Chlorine

Which element is most commonly found as a negatively charged ion? Ne - 0 Li - +1 Al - +3 Cl - -1 Ca - +2 A 100 Which element is isoelectronic with Mg2+ Ne Li Al Cl Ca A 200 Isoelectronic elements have the same electron configurations ? that means they must have the same number of electrons Which element is found as a diatomic gas in its uncombined state? Ne Li Al Cl Ca A 300 You have memorized the diatomic gases: H, O, N, Cl, Br, I, F. Make a study card for these if you need to review and re-memorize! A 400 A 500
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AP Chem Final Review

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Chemistry
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Nuclear chemistry
Nuclear physics
Chemical elements
Baryons
Chemistry
Nuclear binding energy
Neutron
Hydrogen
Alkane
Properties of water
Proton
Solution
AP Chem Chemistry

Chemistry Final Review By: AP Chemistry Class Nuclear...Some Definitions ? Nucleons-any particle found in the nucleus - ex(protons and neutrons) ? Nuclide-atom defined by # of protons and neutrons in nucleus ? Isotopes-same # of protons, but different # of neutrons ? Attraction stronger in nucleus than repulsion ? Hideki Yukawa Nuclear Types of forces: ? Strong Nuclear Force-interaction that binds nucleons together when very close...short distances=larger nuclei Nuclear Binding energy: ? When protons and neutrons come together, energy released ? More stable=Lower Energy ? Nuclear Binding energy-energy released when nucleons come together ? Mass of atom < combined masses of separate parts

AP Chem Study Guide

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Chemistry
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Nuclear chemistry
Nuclear physics
Chemical elements
Baryons
Chemistry
Nuclear binding energy
Neutron
Hydrogen
Alkane
Properties of water
Proton
Solution

Chemistry Final Review By: AP Chemistry Class Nuclear...Some Definitions ? Nucleons-any particle found in the nucleus - ex(protons and neutrons) ? Nuclide-atom defined by # of protons and neutrons in nucleus ? Isotopes-same # of protons, but different # of neutrons ? Attraction stronger in nucleus than repulsion ? Hideki Yukawa Nuclear Types of forces: ? Strong Nuclear Force-interaction that binds nucleons together when very close...short distances=larger nuclei Nuclear Binding energy: ? When protons and neutrons come together, energy released ? More stable=Lower Energy ? Nuclear Binding energy-energy released when nucleons come together ? Mass of atom < combined masses of separate parts

Basic Chemistry Review (PreAP level)

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Chemistry
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Chemical bonding
Quantum chemistry
Chemical properties
Periodic Table
Atomic physics
Chemical bond
ion
Chemistry
Valence electron
Atom
Periodic trends
electron

1 THE MOST BASIC CHEMISTRY REVIEW This review is intended to remind you of the BASICS that you learned. It is NOT COMPLETE. CLASSIFYING MATTER elements, compounds, or mixtures PROPERTIES OF MATTER INTensive?a property that doesn?t depend on amount (ex- boiling point) Extensive?a property that does depend on amount (ex- mass or volume) density ? amount of matter in a given volume Density = mass volume units: g/cm3 for solids, g/mL for liquids density column Example A piece of wood that measures 3.0 cm by 6.0 cm by 4.0 cm has a mass of 80.0 grams. What is the density of the wood? Would the piece of wood float in water? If the wood were cut into three pieces would it have the same density?

AP Chemistry Zumdahl 7E Chapter 8 Notes

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Chemistry
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Chemical bonding
Chemical bond
Octet rule
Lewis structure
Ionic bonding
Covalent bond
Resonance
Chemistry
Valence electron
Valence
Formal charge
VSEPR theory

AP Chemistry A. Allan Chapter 8 Notes - Bonding: General Concepts 8.1 Types of Chemical Bonds A. Ionic Bonding 1. Electrons are transferred 2. Metals react with nonmetals 3. Ions paired have lower energy (greater stability) than separated ions B. Coulomb's Law 1. ? ? ? ? ? ? ? ? ?= - r QQ E nmJx 21191031.2 a. E = energy in joules b. Q1 and Q2 are numerical ion charges c. r = distance between ion center in nanometers d. negative sign indicates an attractive force C. Bond Length (covalent) 1. Distance at which the system energy is at a minimum 2. Forces at work a. Attractive forces (proton - electron) b. Repulsive forces (electron - electron, proton - proton) 3. Energy is given off (bond energy) when two atoms achieve greater stability together than apart

AP Chemistry Zumdahl 7E Chapter 6 Notes

Subject: 
Chemistry
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Thermochemistry
Chemical thermodynamics
Thermodynamic processes
Physical chemistry
Chemistry
Enthalpy
Standard enthalpy of formation
Exothermic reaction
Hess's law
Exothermic process
Calorimeter
Endothermic process

AP Chemistry A. Allan Chapter Six Notes - Thermochemistry 6.1 The Nature of Energy A. Definition 1. Energy is the capacity to do work (or to produce heat*) a. Work is a force acting over a distance (moving an object) b. *Heat is actually a form of energy. (1) chemicals may store potential energy in their bonds that can be released as heat energy B. Law of Conservation of Energy 1. Energy can be converted from one form to another, but cannot be created or destroyed a. Potential energy (1) energy due to position or composition b. Kinetic energy (1) energy due to the motion of an object (2) vmKE 22 1= C. Heat and Temperature 1. Temperature reflects random motion of particles in a substance 2. Temperature indicates the direction in which heat energy will flow

AP Chemistry Zumdahl 7E Chapter 3 Notes

Subject: 
Chemistry
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Stoichiometry
Chemical properties
Mass
Amount of substance
Chemical reactions
Yield
Mole
Limiting reagent
Atomic mass
Empirical formula
Molar mass
Chemistry

AP Chemistry A. Allan Chapter 3 Notes - Stoichiometry 3.1 Atomic Masses A. C-12, the Relative Standard 1. C-12 is assigned a mass of exactly 12 atomic mass units (amu) 2. Masses of all elements are determined in comparison to the carbon - 12 atom (12C) the most common isotope of carbon 3. Comparisons are made using a mass spectrometer B. Atomic Mass (Average atomic mass, atomic weight) 1. Atomic masses are the average of the naturally occurring isotopes of an element 2. Atomic mass does not represent the mass of any actual atom 3. Atomic mass can be used to "weigh out" large numbers of atoms 3.2 The Mole A. Avogadro's number 1. 6.022 x 1023 units = 1 mole 2. Named in honor of Avogadro (he did NOT discover it) B. Measuring moles

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