Chemistry I Exams and Keys 2014 Season
... D. Rutherford’s model did not place electrons in energy levels, while Bohr’s model did. E. Rutherford’s model showed the atom to consist of low density positively charged matter with tiny negatively charged particles embedded in it, while Bohr’s model showed the nucleus consisting of protons and neu ...
... D. Rutherford’s model did not place electrons in energy levels, while Bohr’s model did. E. Rutherford’s model showed the atom to consist of low density positively charged matter with tiny negatively charged particles embedded in it, while Bohr’s model showed the nucleus consisting of protons and neu ...
The Atomic Theory
... nucleus could be found in at any place in one of these orbitals at any instant ...
... nucleus could be found in at any place in one of these orbitals at any instant ...
The Nuclear Model of the Atom
... _____ Dalton assumed that atoms could be further divided. _____ The electron and the neuron have essentially the same mass. _____ The Rutherford model of the atom came after the Thomson model. _____ The charge on the neutron is zero. _____ The electron has a mass 1/1840 of that of the proton. _____ ...
... _____ Dalton assumed that atoms could be further divided. _____ The electron and the neuron have essentially the same mass. _____ The Rutherford model of the atom came after the Thomson model. _____ The charge on the neutron is zero. _____ The electron has a mass 1/1840 of that of the proton. _____ ...
Chem 1 Worksheets WSHEET 1: Working with Numbers Practice
... C. matter included particles much smaller than the atom. D. atoms contained dense areas of positive charge. E. atoms are largely empty space. 3. Millikan's oil-drop experiment A. established the charge on an electron. B. showed that all oil drops carried the same charge. C. provided support for the ...
... C. matter included particles much smaller than the atom. D. atoms contained dense areas of positive charge. E. atoms are largely empty space. 3. Millikan's oil-drop experiment A. established the charge on an electron. B. showed that all oil drops carried the same charge. C. provided support for the ...
MULTIPLE CHOICE. Choose the one alternative that best completes
... 59) An excess of hydrogen ions in the body fluids can have disastrous results because A) excess hydrogen ions can change the shape of large complex molecules, rendering them nonfunctional. B) excess hydrogen ions can break chemical bonds. C) excess hydrogen ions can disrupt tissue functions. D) all ...
... 59) An excess of hydrogen ions in the body fluids can have disastrous results because A) excess hydrogen ions can change the shape of large complex molecules, rendering them nonfunctional. B) excess hydrogen ions can break chemical bonds. C) excess hydrogen ions can disrupt tissue functions. D) all ...
Darshana Jolts-Atoms and Molecules: Beneath the Tangible World
... Furthermore, in the first allowed orbit, there is one spatial orientation; in the second, there are three. In level three, i.e., for the third orbit, five different orientations are allowed. Numbers, called magnetic moment quantum numbers in the technical jargon, are given to these possible orientat ...
... Furthermore, in the first allowed orbit, there is one spatial orientation; in the second, there are three. In level three, i.e., for the third orbit, five different orientations are allowed. Numbers, called magnetic moment quantum numbers in the technical jargon, are given to these possible orientat ...
Atoms - Chemistry R: 4(AE)
... •Electrons revolve around the nucleus in specific orbits, or energy levels. • An atom has energy levels. Electrons can only exist in these energy levels, not in between. •When an atom is in the ground state, the electrons exist in the energy levels closest to the nucleus. •GROUND STATE: the lowest e ...
... •Electrons revolve around the nucleus in specific orbits, or energy levels. • An atom has energy levels. Electrons can only exist in these energy levels, not in between. •When an atom is in the ground state, the electrons exist in the energy levels closest to the nucleus. •GROUND STATE: the lowest e ...
Student Copy Study Guide Introduction to Periodic
... 19.The atomic number of an element is the total number of which particles in the nucleus? a. neutrons b. protons c. electrons d. protons and electrons 20. Who was the man who lived from 460 B.C.–370 B.C. and was among the first to suggest the idea of atoms? a. Atomos b. Dalton c. Democritus d. Thoms ...
... 19.The atomic number of an element is the total number of which particles in the nucleus? a. neutrons b. protons c. electrons d. protons and electrons 20. Who was the man who lived from 460 B.C.–370 B.C. and was among the first to suggest the idea of atoms? a. Atomos b. Dalton c. Democritus d. Thoms ...
UNIT NUM="1" ID="UN
... three isotopes of carbon have 6 protons; otherwise, they would not be carbon. Although the isotopes of an element have slightly different masses, they behave identically in chemical reactions. (The number usually given as the atomic mass of an element, such as 22.9898 daltons for sodium, is actually ...
... three isotopes of carbon have 6 protons; otherwise, they would not be carbon. Although the isotopes of an element have slightly different masses, they behave identically in chemical reactions. (The number usually given as the atomic mass of an element, such as 22.9898 daltons for sodium, is actually ...
Conserving Matter - Hobbs High School
... equations in terms of atoms and molecules. 2 CuO(s) + C(s) → 2 Cu(s) + CO2(g) But for a metal-processing plant making copper metal, they need to know how much carbon is needed to react with a large amount of copper (II) oxide ore. ...
... equations in terms of atoms and molecules. 2 CuO(s) + C(s) → 2 Cu(s) + CO2(g) But for a metal-processing plant making copper metal, they need to know how much carbon is needed to react with a large amount of copper (II) oxide ore. ...
The History of the Atom - cho
... Chemistry CPS: Project #2: GUIDELINES The History of the Atom: NAMES OF THE SCIENTISTS:__________________________________________________ _____________________________________________________________ Date assigned: ______________________________ Date due: __________________________________ P ...
... Chemistry CPS: Project #2: GUIDELINES The History of the Atom: NAMES OF THE SCIENTISTS:__________________________________________________ _____________________________________________________________ Date assigned: ______________________________ Date due: __________________________________ P ...
CHAPTER 3 - THE ATOM
... C. Protons – every neutral atom has the same number of protons as electrons, so the positive and negative charges will balance. D. Neutrons – discovered in 1932 by Chadwick. Are neutral (no electrical charge). Mass is virtually identical to the mass of a proton; both of these particles have a much l ...
... C. Protons – every neutral atom has the same number of protons as electrons, so the positive and negative charges will balance. D. Neutrons – discovered in 1932 by Chadwick. Are neutral (no electrical charge). Mass is virtually identical to the mass of a proton; both of these particles have a much l ...
+ H 2 O(g)
... • STEP 1: Write all of the atoms in the reactants and the products (in the same order) • STEP 2: Put * next to the atom in step 1, if an element occurs more than once on one side of a reaction ...
... • STEP 1: Write all of the atoms in the reactants and the products (in the same order) • STEP 2: Put * next to the atom in step 1, if an element occurs more than once on one side of a reaction ...
Avogadro`s Law is relation between
... 3- Given the same number of moles of two gases at STP conditions, how do the volumes of two gases compare? How do the masses of the two gas samples compare? 4- How many moles of helium are contained in each volume at STP: (a) 5.0 L; (b) 11.2 L; (c) 50.0 mL? 5- How many moles of argon are contained i ...
... 3- Given the same number of moles of two gases at STP conditions, how do the volumes of two gases compare? How do the masses of the two gas samples compare? 4- How many moles of helium are contained in each volume at STP: (a) 5.0 L; (b) 11.2 L; (c) 50.0 mL? 5- How many moles of argon are contained i ...
Chapter 18: Properties of Atoms and the Periodic Table
... Protons Identify the Element You learned earlier that atoms of different elements are different because they have different numbers of protons. In fact, the number of protons tells you what type of atom you have and vice versa. For example, every carbon atom has six protons. Also, all atoms with six ...
... Protons Identify the Element You learned earlier that atoms of different elements are different because they have different numbers of protons. In fact, the number of protons tells you what type of atom you have and vice versa. For example, every carbon atom has six protons. Also, all atoms with six ...
2005 - NESACS
... 42. The hydrogen emission spectrum for galaxy NGC 3310 is shown below. Marked on the spectrum with a vertical line is the red hydrogen emission line, Hα, at 6562.8 Å (656.2 nm) that originates from the Balmer series (32) at the spot where it would be found in a hydrogen spectrum produced in a labor ...
... 42. The hydrogen emission spectrum for galaxy NGC 3310 is shown below. Marked on the spectrum with a vertical line is the red hydrogen emission line, Hα, at 6562.8 Å (656.2 nm) that originates from the Balmer series (32) at the spot where it would be found in a hydrogen spectrum produced in a labor ...
Test Booklet
... 49 Which statement is true for the reaction represented by this equation? CH4 + 2CO2 → CO2 + 2H2 O ...
... 49 Which statement is true for the reaction represented by this equation? CH4 + 2CO2 → CO2 + 2H2 O ...
Document
... ____ 4. The element family that usually GAINS electrons. e) metallic bond ____ 5. The element family that usually does NOT bond easily with other elements. f) covalent bond ____ 6. The group of elements that can either lose or gain electrons. g) amphoteric ____ 7. The bond that occurs between metals ...
... ____ 4. The element family that usually GAINS electrons. e) metallic bond ____ 5. The element family that usually does NOT bond easily with other elements. f) covalent bond ____ 6. The group of elements that can either lose or gain electrons. g) amphoteric ____ 7. The bond that occurs between metals ...
Structure of the Atom
... level had a certain energy value associated with the level. The closer the level was to the nucleus, the lower the energy of the level. The further away from the nucleus, the higher the energy is of that level. As long as the electrons were in these levels, the electrons do not give off energy. The ...
... level had a certain energy value associated with the level. The closer the level was to the nucleus, the lower the energy of the level. The further away from the nucleus, the higher the energy is of that level. As long as the electrons were in these levels, the electrons do not give off energy. The ...
Name: Northwest Vista College Chem 1311
... 42. (6 pts) During a titration the following data were obtained. A 10. mL portion of an unknown monoprotic acid solution was titrated with 1.0 M NaOH; 40. mL of the base were required to neutralize the sample. What is the molarity of the acid solution? Answer: This is stoichiometry of an acid base r ...
... 42. (6 pts) During a titration the following data were obtained. A 10. mL portion of an unknown monoprotic acid solution was titrated with 1.0 M NaOH; 40. mL of the base were required to neutralize the sample. What is the molarity of the acid solution? Answer: This is stoichiometry of an acid base r ...