Name___________________________________ Physical
... 11) How many water molecules are in four formula units of calcium chloride dihydrate (CaCl2 · 2H2 O)? ...
... 11) How many water molecules are in four formula units of calcium chloride dihydrate (CaCl2 · 2H2 O)? ...
Gateway Chemistry Review (Answer Key) Structure and Properties
... Atomic Radius o One half the distance between two nuclei of like atoms. o A measure of the size of an atom. o What effect does atomic radius have on electron affinity and ionization energy? ...
... Atomic Radius o One half the distance between two nuclei of like atoms. o A measure of the size of an atom. o What effect does atomic radius have on electron affinity and ionization energy? ...
chemistry i
... decreases. The equation E = hν means that as frequency increases, energy increases. Using this information and the reference tables, which color of visible light has the least energy? A. Red b. Yellow c. Green d. Violet 38. If an electron drops from n=6 to n=2, what type of electromagnetic radiation ...
... decreases. The equation E = hν means that as frequency increases, energy increases. Using this information and the reference tables, which color of visible light has the least energy? A. Red b. Yellow c. Green d. Violet 38. If an electron drops from n=6 to n=2, what type of electromagnetic radiation ...
HW / Unit 2
... 4. How many atoms of beryllium would it take to have a mass of 27.0 amu? 5. If a single Si atom has a mass of 28.1 amu, how many Si atoms would have to be placed on a balance before it would register 28.1 g? HW #2.14 Use the factor-label method to solve the following problems. Show your units and th ...
... 4. How many atoms of beryllium would it take to have a mass of 27.0 amu? 5. If a single Si atom has a mass of 28.1 amu, how many Si atoms would have to be placed on a balance before it would register 28.1 g? HW #2.14 Use the factor-label method to solve the following problems. Show your units and th ...
File first semester final study guide key
... 12. A student is given an unknown substance for analysis. The substance is an orange liquid and appears to be uniform throughout. What would the student do to determine whether the substance is a mixture or pure substance? If it is a mixture what separation technique could be used to separate the mi ...
... 12. A student is given an unknown substance for analysis. The substance is an orange liquid and appears to be uniform throughout. What would the student do to determine whether the substance is a mixture or pure substance? If it is a mixture what separation technique could be used to separate the mi ...
1 st Nine Weeks Study Guide for Chemistry
... G. What are chemical properties? Give at least three examples. End up changing the substance in question. Flammability, Corrosive, combustible H. What is the difference between a chemical and physical change? ...
... G. What are chemical properties? Give at least three examples. End up changing the substance in question. Flammability, Corrosive, combustible H. What is the difference between a chemical and physical change? ...
snc 2do unit: chemistry unit test review questions
... 2. Write the formulas for the following compounds. A) sulphur trioxide B) tin (IV) bromide C) iron (II) oxide D) carbon monoxide E) rubidium oxide F) nitric acid G) copper (II) sulphide H) aluminum sulphate I) silicon dioxide J) phosphorus pentachloride 3. What do the elements in the same group all ...
... 2. Write the formulas for the following compounds. A) sulphur trioxide B) tin (IV) bromide C) iron (II) oxide D) carbon monoxide E) rubidium oxide F) nitric acid G) copper (II) sulphide H) aluminum sulphate I) silicon dioxide J) phosphorus pentachloride 3. What do the elements in the same group all ...
Lecture 3 Chemistry
... Physical – H20 3 phases(solid, liquid, and gas) Chemical- composition Altered CH4 CO2 + H20 Structure: ...
... Physical – H20 3 phases(solid, liquid, and gas) Chemical- composition Altered CH4 CO2 + H20 Structure: ...
Chapter 1 Introduction: Matter and Measurement
... 1. Craft Traditions – practical knowledge of matter was obtained mostly through trial and error (empirically). serendipity – accidental good fortune (discovery) ex. 2. Greek philosophers – observations and logic to study matter nature composed of 4 elements air, fire, water, and earth that have 4 pr ...
... 1. Craft Traditions – practical knowledge of matter was obtained mostly through trial and error (empirically). serendipity – accidental good fortune (discovery) ex. 2. Greek philosophers – observations and logic to study matter nature composed of 4 elements air, fire, water, and earth that have 4 pr ...
Objective 4
... beakers. The first solution has a pH of 4, and the pH of the second solution is unknown. If the two solutions are mixed and the resulting pH is 5, the second solution must have — A fewer suspended solids B a lower temperature C more dissolved salt (NaCl) particles D a higher concentration of OH– ion ...
... beakers. The first solution has a pH of 4, and the pH of the second solution is unknown. If the two solutions are mixed and the resulting pH is 5, the second solution must have — A fewer suspended solids B a lower temperature C more dissolved salt (NaCl) particles D a higher concentration of OH– ion ...
Unit 2 Test Review - Liberty High School
... 13. Silver iodine powder has been used as an antiseptic and as an agent to seed clouds for rain. Silver iodine is 45.9% silver by mass. If you separate a 50.0-g sample of silver iodine into its elements, silver and iodine, how much silver would you have? 14. If 5 g of element A combines with 16 g o ...
... 13. Silver iodine powder has been used as an antiseptic and as an agent to seed clouds for rain. Silver iodine is 45.9% silver by mass. If you separate a 50.0-g sample of silver iodine into its elements, silver and iodine, how much silver would you have? 14. If 5 g of element A combines with 16 g o ...
Phy. Sci Mid-term review
... 11. Describe the 3 classes that matter can be divided into and give 3 examples of each. 12. The law of conservation of mass states that matter cannot be made or destroyed by ordinary chemical means. Explain what is meant by this statement. 13. Who is Democritus and what did he believe? How about the ...
... 11. Describe the 3 classes that matter can be divided into and give 3 examples of each. 12. The law of conservation of mass states that matter cannot be made or destroyed by ordinary chemical means. Explain what is meant by this statement. 13. Who is Democritus and what did he believe? How about the ...
Name: Period
... 1. Describe the quantum mechanical model of an atom? 2. Which scientist developed the quantum mechanical model of an atom? 3. What are the shapes of an s and p orbitals? 4. What is a principal energy level, sublevel and atomic orbital? 5. What is the maximum number in each s, p, d and f orbitals? 6. ...
... 1. Describe the quantum mechanical model of an atom? 2. Which scientist developed the quantum mechanical model of an atom? 3. What are the shapes of an s and p orbitals? 4. What is a principal energy level, sublevel and atomic orbital? 5. What is the maximum number in each s, p, d and f orbitals? 6. ...
6.1 Organizing the Periodic Table
... that is in the highest occupied energy level of an atom • Valence electrons play a key role in chemical reactions • Properties vary across a period because the # of valence electrons increases from left to right • Elements in a group have similar properties because they have the same # of valence el ...
... that is in the highest occupied energy level of an atom • Valence electrons play a key role in chemical reactions • Properties vary across a period because the # of valence electrons increases from left to right • Elements in a group have similar properties because they have the same # of valence el ...
Semester Exam Practice Questions
... Short Answer 58. Describe how the atomic model changed as a result of research performed or interperted by Thomson, Rutherford, and Bohr. ...
... Short Answer 58. Describe how the atomic model changed as a result of research performed or interperted by Thomson, Rutherford, and Bohr. ...
1) - Kurt Niedenzu
... Final EOC Review - Sheet 2 32) The increase in atomic radius of each successive element within a group is primarily due to an increase in the number of a) neutrons in the nucleus b) electrons in the outermost shell c) unpaired electrons d) occupied principal energy levels 33) Elements that have pro ...
... Final EOC Review - Sheet 2 32) The increase in atomic radius of each successive element within a group is primarily due to an increase in the number of a) neutrons in the nucleus b) electrons in the outermost shell c) unpaired electrons d) occupied principal energy levels 33) Elements that have pro ...
Covalent Bonds - WordPress.com
... Elements and Compounds • An element is a substance that cannot be broken down to other substances by chemical reactions • There are 92 naturally occuring elements • Each element has a unique symbol, usually the fist one or two letter of the name. some of the symbol are devived from Latin or German ...
... Elements and Compounds • An element is a substance that cannot be broken down to other substances by chemical reactions • There are 92 naturally occuring elements • Each element has a unique symbol, usually the fist one or two letter of the name. some of the symbol are devived from Latin or German ...
Matter – Properties and Changes
... • Substance: a form of matter that has a uniform and unchanging composition; also known as a pure substance. • Mixture: a physical blend of 2 or more pure substances in any proportion in which each substance retains its individual properties; can be separated by physical means • Chemical property: t ...
... • Substance: a form of matter that has a uniform and unchanging composition; also known as a pure substance. • Mixture: a physical blend of 2 or more pure substances in any proportion in which each substance retains its individual properties; can be separated by physical means • Chemical property: t ...
Labs - newtunings.com
... • have no attractive forces between them. • have collisions that may result in a transfer of energy between gas particles, but the total energy of the system remains constant. 3.4c Kinetic molecular theory describes the relationships of pressure, volume, temperature, velocity, and frequency and forc ...
... • have no attractive forces between them. • have collisions that may result in a transfer of energy between gas particles, but the total energy of the system remains constant. 3.4c Kinetic molecular theory describes the relationships of pressure, volume, temperature, velocity, and frequency and forc ...
Chapter 3- sec 1- the atom
... contains the same elements in exactly the same proportions by mass regardless of the size of the sample or source of the compound • Law of multiple proportions: if two or more different compounds are composed of the same two elements, then the ratio of the masses of the second element combined with ...
... contains the same elements in exactly the same proportions by mass regardless of the size of the sample or source of the compound • Law of multiple proportions: if two or more different compounds are composed of the same two elements, then the ratio of the masses of the second element combined with ...
AHSGE Review
... The first periodic table was arranged according to the atomic mass of elements. Mendeleev’s table was revised by Henry Moseley in 1911. Moseley’s table was arranged by atomic number, since this number does not change. ...
... The first periodic table was arranged according to the atomic mass of elements. Mendeleev’s table was revised by Henry Moseley in 1911. Moseley’s table was arranged by atomic number, since this number does not change. ...
First Semester Final - Review Questions
... Chemistry 1st Semester Final Review Atomic and Molecular Structure 1. What is atomic number? 2. How does increasing the atomic number affect the identity of an atom? 3. What is atomic mass? What two subatomic particles make up the majority of an atom’s mass? 4. Describe the gold foil experiment. Wha ...
... Chemistry 1st Semester Final Review Atomic and Molecular Structure 1. What is atomic number? 2. How does increasing the atomic number affect the identity of an atom? 3. What is atomic mass? What two subatomic particles make up the majority of an atom’s mass? 4. Describe the gold foil experiment. Wha ...
Study Guide 1st Semester
... 32. Where are the alkali metal elements found? How do their electron configurations end? What are some typical behaviors of alkali metals? 33. Where are the alkaline earth metals found? How do their electron configurations end? What are some typical behaviors of alkaline earth metals? 34. What is a ...
... 32. Where are the alkali metal elements found? How do their electron configurations end? What are some typical behaviors of alkali metals? 33. Where are the alkaline earth metals found? How do their electron configurations end? What are some typical behaviors of alkaline earth metals? 34. What is a ...
Chapter 23 (Section 3) Pregnancy, Birth, and
... c. some MATTER exists in elemental form [(e.g.) gold [Au] = not chemically REACTIVE)] *d. ELEMENTS individually or combined form everything in the universe including HUMANS *1. Human body’s most abundant ELEMENTS: carbon [C], oxygen [O], hydrogen [H], and nitrogen [N]; for teeth & BONES = calcium [C ...
... c. some MATTER exists in elemental form [(e.g.) gold [Au] = not chemically REACTIVE)] *d. ELEMENTS individually or combined form everything in the universe including HUMANS *1. Human body’s most abundant ELEMENTS: carbon [C], oxygen [O], hydrogen [H], and nitrogen [N]; for teeth & BONES = calcium [C ...