unit 2 review
... Mg has 3 isotopes: 24Mg(78.7%), 25Mg(10.1%), 26Mg(11.2%). Give the average atomic mass. Calculate the molar mass of a) H2SO4, b) Fe2(Cr2O7)3. a) How many moles are in 16 grams of CuCl2? b) How much does 70 moles of NaCl weigh? a) How many molecules are in exactly 4 moles of H2O? b) How many hydrogen ...
... Mg has 3 isotopes: 24Mg(78.7%), 25Mg(10.1%), 26Mg(11.2%). Give the average atomic mass. Calculate the molar mass of a) H2SO4, b) Fe2(Cr2O7)3. a) How many moles are in 16 grams of CuCl2? b) How much does 70 moles of NaCl weigh? a) How many molecules are in exactly 4 moles of H2O? b) How many hydrogen ...
matter - Firelands Local Schools
... Example: 3H20 = 3 water molecules Pure substance: any matter that has a fixed composition and definite properties a. Cannot be broken down by physical means such as boiling, melting, and grinding Mixture: a combination of two or more pure ...
... Example: 3H20 = 3 water molecules Pure substance: any matter that has a fixed composition and definite properties a. Cannot be broken down by physical means such as boiling, melting, and grinding Mixture: a combination of two or more pure ...
Reactions I Can..
... 6. Identify the phase (solid, liquid, gas) of each element on the Periodic Table. 7. Explain the basic periodic trends of radius and ionization energy 8. Explain the concept of Shielding 9. Explain how an ion can have a net charge 10. Determine the charge of an ion given the number of protons and el ...
... 6. Identify the phase (solid, liquid, gas) of each element on the Periodic Table. 7. Explain the basic periodic trends of radius and ionization energy 8. Explain the concept of Shielding 9. Explain how an ion can have a net charge 10. Determine the charge of an ion given the number of protons and el ...
Atoms
... 8. Trace the changes in atomic theory starting with Dalton and ending with the modern quantum mechanical model. 9. Describe the basic properties of alpha, beta, and gamma radiation. 10. Explain why some atomic nuclei are unstable 11. Predict the type of nuclear decay that will occur given the compos ...
... 8. Trace the changes in atomic theory starting with Dalton and ending with the modern quantum mechanical model. 9. Describe the basic properties of alpha, beta, and gamma radiation. 10. Explain why some atomic nuclei are unstable 11. Predict the type of nuclear decay that will occur given the compos ...
Prerequisite Knowledge for Chemistry
... All matter is made of atoms. Atoms are not the smallest form of matter, but atoms are the smallest particles of matter that retains a chemical identity (still can be considered an element and display many of the properties of that elements). Matter including liquids are made of smaller units made of ...
... All matter is made of atoms. Atoms are not the smallest form of matter, but atoms are the smallest particles of matter that retains a chemical identity (still can be considered an element and display many of the properties of that elements). Matter including liquids are made of smaller units made of ...
PPT - kimscience.com
... Atomic structure- Bohr model Energy level=n Lowest energy state is closest to nucleus-attracted to the protons When one energy level is filled, electrons are found at higher levels. Each energy level can hold a maximum number of electrons (2n2 electrons) First shell = two electrons Second sh ...
... Atomic structure- Bohr model Energy level=n Lowest energy state is closest to nucleus-attracted to the protons When one energy level is filled, electrons are found at higher levels. Each energy level can hold a maximum number of electrons (2n2 electrons) First shell = two electrons Second sh ...
Quantum Mechanics and Atomic Physics
... In other words, linear combinations of eigenstates are not generally solutions of the eigenequation eigenequation.. The measurement will yield either E1 or E2, though not with equal probability The system need not be in an eigenstate - the superposition state Ψ “collapses” into one g when one makes ...
... In other words, linear combinations of eigenstates are not generally solutions of the eigenequation eigenequation.. The measurement will yield either E1 or E2, though not with equal probability The system need not be in an eigenstate - the superposition state Ψ “collapses” into one g when one makes ...
Grades 9-12 Chemistry California Content Standards
... a. atoms combine to form molecules by sharing electrons to form covalent or metallic bonds, or by exchanging electrons to form ionic bonds. b. chemical bonds between atoms in molecules such as H2, CH4, NH3, H2CCH2, N2, Cl2, and many large biological molecules are covalent. c. salt crystals such as N ...
... a. atoms combine to form molecules by sharing electrons to form covalent or metallic bonds, or by exchanging electrons to form ionic bonds. b. chemical bonds between atoms in molecules such as H2, CH4, NH3, H2CCH2, N2, Cl2, and many large biological molecules are covalent. c. salt crystals such as N ...
Energy Atoms and Elements Practice Problems
... 18) Which of the following is NOT a statement of Dalton's Atomic Theory. A) All matter is made up of tiny indestructable particles called atoms. B) Atoms are niether created or destroyed during a chemical reaction, just rearranged. C) All atoms of a given element are identical and atoms of different ...
... 18) Which of the following is NOT a statement of Dalton's Atomic Theory. A) All matter is made up of tiny indestructable particles called atoms. B) Atoms are niether created or destroyed during a chemical reaction, just rearranged. C) All atoms of a given element are identical and atoms of different ...
Chemical Reactions
... whose solutes do not settle out Suspensions – heterogeneous mixtures with visible solutes that tend to settle out ...
... whose solutes do not settle out Suspensions – heterogeneous mixtures with visible solutes that tend to settle out ...
Chemistry - Gorman Learning Center
... a. atoms combine to form molecules by sharing electrons to form covalent or metallic bonds, or by exchanging electrons to form ionic bonds. b. chemical bonds between atoms in molecules such as H2, CH4, NH3, H2CCH2, N2, Cl2, and many large biological molecules are covalent. c. salt crystals such as N ...
... a. atoms combine to form molecules by sharing electrons to form covalent or metallic bonds, or by exchanging electrons to form ionic bonds. b. chemical bonds between atoms in molecules such as H2, CH4, NH3, H2CCH2, N2, Cl2, and many large biological molecules are covalent. c. salt crystals such as N ...
2. Covalent network
... o A cation is smaller than its parent atom Lattice energy: the change in energy when ions are packed together to form an ionic solid o Lattice energy=k(Q1 Q2/r) o K= constant o Q1, Q2 = charges on the ions ...
... o A cation is smaller than its parent atom Lattice energy: the change in energy when ions are packed together to form an ionic solid o Lattice energy=k(Q1 Q2/r) o K= constant o Q1, Q2 = charges on the ions ...
matter crct/final exam review
... 15. What are isotopes? 16. What information does the atomic number give you about an element? 17. What determines an element’s placement on the Periodic Table? 18. Who organized the very first Periodic Table? 19. Why is it called the Periodic Table? 20. How is the Periodic Table arranged? 21. What i ...
... 15. What are isotopes? 16. What information does the atomic number give you about an element? 17. What determines an element’s placement on the Periodic Table? 18. Who organized the very first Periodic Table? 19. Why is it called the Periodic Table? 20. How is the Periodic Table arranged? 21. What i ...
South Pasadena · AP Chemistry
... State the significance of the mole. State the three mole facts for any substance (molar volume, molar mass, Avogadro’s number): 1 mole = 22.4 Liters @ STP (gases only) 1 mole = 6.02 x 1023 particles (particles = molecules, atoms, or ions) 1 mole = gram molecular mass of chemical Use dimensiona ...
... State the significance of the mole. State the three mole facts for any substance (molar volume, molar mass, Avogadro’s number): 1 mole = 22.4 Liters @ STP (gases only) 1 mole = 6.02 x 1023 particles (particles = molecules, atoms, or ions) 1 mole = gram molecular mass of chemical Use dimensiona ...
What You Need to Know to Pass the Chemistry
... 4. Spontaneous decay can involve the release of different particles from the nucleus. The types of particles, as well as their masses and charges, can be found on Table O. 5. Nuclear reactions include natural and artificial decay, nuclear fission and nuclear fusion. Nuclear fission occurs when t ...
... 4. Spontaneous decay can involve the release of different particles from the nucleus. The types of particles, as well as their masses and charges, can be found on Table O. 5. Nuclear reactions include natural and artificial decay, nuclear fission and nuclear fusion. Nuclear fission occurs when t ...
4 - Practice Calculations - Empirical formulas and % by mass
... a. 41.39% carbon, 3.47% hydrogen, and 55.14% oxygen; experimental molar mass: 116.07g b. 54.53% carbon, 9.15% hydrogen, and 36.32% oxygen; experimental molar mass: 88g c. 64.27% carbon, 7.19% hydrogen, and 28.54% oxygen; experimental molar mass 168.19g d. A hydrocarbon containing 17.4% hydrogen by m ...
... a. 41.39% carbon, 3.47% hydrogen, and 55.14% oxygen; experimental molar mass: 116.07g b. 54.53% carbon, 9.15% hydrogen, and 36.32% oxygen; experimental molar mass: 88g c. 64.27% carbon, 7.19% hydrogen, and 28.54% oxygen; experimental molar mass 168.19g d. A hydrocarbon containing 17.4% hydrogen by m ...
Atoms, molecules and ions
... atoms present in a substance • e.g.; hydrogen peroxide is a molecule that contains two atoms of oxygen and two atoms of hydrogen. • The molecular formula is H2O2 • The empirical formula is HO • For many molecules, the molecular and empirical formulas are identical (e.g.; H2O) ...
... atoms present in a substance • e.g.; hydrogen peroxide is a molecule that contains two atoms of oxygen and two atoms of hydrogen. • The molecular formula is H2O2 • The empirical formula is HO • For many molecules, the molecular and empirical formulas are identical (e.g.; H2O) ...
2015-2016 AP CHEMISTRY MIDTERM EXAM Review
... 4. Answer all three portions in this part. Give the formulas to show the reactants and the products for the three following chemical reactions. Each reaction occurs in aqueous solution unless otherwise indicated. Represent the substances in solution as ions if the substance is extensively ionized. ...
... 4. Answer all three portions in this part. Give the formulas to show the reactants and the products for the three following chemical reactions. Each reaction occurs in aqueous solution unless otherwise indicated. Represent the substances in solution as ions if the substance is extensively ionized. ...
Chapter Outline • Review of Atomic Structure Electrons, protons
... The number of atoms in a mole is called the Avogadro number, Nav = 6.023 × 10 23. 1 amu/atom = 1 gram/mol Example: Atomic weight of iron = 55.85 amu/atom = 55.85 g/mol ...
... The number of atoms in a mole is called the Avogadro number, Nav = 6.023 × 10 23. 1 amu/atom = 1 gram/mol Example: Atomic weight of iron = 55.85 amu/atom = 55.85 g/mol ...
chapter 2 - Scranton Prep Biology
... in the object's position. Weight is the measureof how strongly an object is pulled by earth's gravity, and it varies with distance from the earth's center. Thi key point is that the mass of a body does not vary with its position, whereasweight does. So, for all practical purposes-as long as we are e ...
... in the object's position. Weight is the measureof how strongly an object is pulled by earth's gravity, and it varies with distance from the earth's center. Thi key point is that the mass of a body does not vary with its position, whereasweight does. So, for all practical purposes-as long as we are e ...
Chapter 2 (Hill/Petrucci/McCreary/Perry This chapter deals with
... Law of Constant Composition (Definite Proportions) "In a compound, elements are always present in a definite proportion by weight." Thus, water, a compound is always 11 parts H and 89 parts O by weight (mass) John Dalton’s Atomic Theory (1803-1807) A comprehensive theory (a synthesis) to account for ...
... Law of Constant Composition (Definite Proportions) "In a compound, elements are always present in a definite proportion by weight." Thus, water, a compound is always 11 parts H and 89 parts O by weight (mass) John Dalton’s Atomic Theory (1803-1807) A comprehensive theory (a synthesis) to account for ...
Chemistry I Honors
... Answer the following questions about the element selenium, Se (atomic number 34). c.In terms of atomic structure, explain why the first ionization energy of selenium is i. less than that of bromine (atomic number 35), and ii.greater than that of tellurium (atomic number 52). d.Selenium reacts with f ...
... Answer the following questions about the element selenium, Se (atomic number 34). c.In terms of atomic structure, explain why the first ionization energy of selenium is i. less than that of bromine (atomic number 35), and ii.greater than that of tellurium (atomic number 52). d.Selenium reacts with f ...