File
... 65. The volume of 400 mL of chlorine gas at 400mmHg is decreased to 200mL at constant temperature. What is the new gas pressure? A. 400 mmHg B. 300 mmHg C. 800 mmHg D. 650 mmHg 66. If a sealed bag of chips is left in a hot car, what happens to the volume of bag? A. volume increases B. volume decreas ...
... 65. The volume of 400 mL of chlorine gas at 400mmHg is decreased to 200mL at constant temperature. What is the new gas pressure? A. 400 mmHg B. 300 mmHg C. 800 mmHg D. 650 mmHg 66. If a sealed bag of chips is left in a hot car, what happens to the volume of bag? A. volume increases B. volume decreas ...
KEY Midterm Exam 1 Sept.14, 1999 Chemistry 211 PAGE 1 0f 5
... The inhabitants of a planet "Htrae" in a distant galaxy measure mass in units of "margs", where 1 marg = 4.8648 grams (exactly). Their scale of atomic masses is based on the isotope 3 2S (atomic mass on earth = 31.972 g/mole), so they define one "elom" of 3 2S as the amount of sulfur atoms in exactl ...
... The inhabitants of a planet "Htrae" in a distant galaxy measure mass in units of "margs", where 1 marg = 4.8648 grams (exactly). Their scale of atomic masses is based on the isotope 3 2S (atomic mass on earth = 31.972 g/mole), so they define one "elom" of 3 2S as the amount of sulfur atoms in exactl ...
final exam review packet
... 67. What is the maximum amount of electrons that can occupy an orbital? 68. Pauli’s exclusion Principle states that no more than two electrons can occupy an orbital, provided they have ...
... 67. What is the maximum amount of electrons that can occupy an orbital? 68. Pauli’s exclusion Principle states that no more than two electrons can occupy an orbital, provided they have ...
PowerPoint - Balancing Equations
... 4. Check your answer to see if: – The numbers of atoms on both sides of the equation are now balanced. – The coefficients are in the lowest possible whole number ratios. (reduced) ...
... 4. Check your answer to see if: – The numbers of atoms on both sides of the equation are now balanced. – The coefficients are in the lowest possible whole number ratios. (reduced) ...
Atoms Matter Energy Notes
... _______________________. Examples: visible light, microwaves, and x-rays. ...
... _______________________. Examples: visible light, microwaves, and x-rays. ...
Structure and Properties of Matter Jeopardy
... reactive metals are25% found __25% In group 1, the first column on the left In period 1, the first row across the top In group 13 through 16 near the right In periods 6 and 7 at the bottom ...
... reactive metals are25% found __25% In group 1, the first column on the left In period 1, the first row across the top In group 13 through 16 near the right In periods 6 and 7 at the bottom ...
The Atom
... Get the mass of the isotope and multiply it by the % abundance. For example: To determine the actual mass, as seen of the periodic table, for Chlorine: 1) Determine the mass in amu of each isotope and then find the total mass by adding up the masses of each isotope. ...
... Get the mass of the isotope and multiply it by the % abundance. For example: To determine the actual mass, as seen of the periodic table, for Chlorine: 1) Determine the mass in amu of each isotope and then find the total mass by adding up the masses of each isotope. ...
Examination 3 Multiple Choice Questions
... b) If we set the mass of a Hydrogen atom to be 25 ja (ja = "jeff altig" mass units), what is the mass of an Oxygen atom in ja's? 7.93g / 1.00g = 7.93 = mass O atom / (2 x mass H atom) mass O atom = 7.93 x 2 x mass H atom = 7.93 x 2 x 25ja = 396 ja ...
... b) If we set the mass of a Hydrogen atom to be 25 ja (ja = "jeff altig" mass units), what is the mass of an Oxygen atom in ja's? 7.93g / 1.00g = 7.93 = mass O atom / (2 x mass H atom) mass O atom = 7.93 x 2 x mass H atom = 7.93 x 2 x 25ja = 396 ja ...
Review # 3
... The accepted value for the boiling point of a substance is 120 oC. A student performs an experiment and reports the boiling point to be 110 oC. The percent error of the student’s observation is a. 83% b. 120% c. 20 % d. 80% ...
... The accepted value for the boiling point of a substance is 120 oC. A student performs an experiment and reports the boiling point to be 110 oC. The percent error of the student’s observation is a. 83% b. 120% c. 20 % d. 80% ...
File - LSAmockscience
... • When one element replaces another element in a compound A + BC AC + B Element + compound new element + new compound ...
... • When one element replaces another element in a compound A + BC AC + B Element + compound new element + new compound ...
Section 1-2 Matter and Its Properties
... An atom is the smallest unit of an element that maintains the properties of that element. An element is a pure substance made up of only one kind of atom. A compound is a substance that is made from the atoms of two or more elements that ...
... An atom is the smallest unit of an element that maintains the properties of that element. An element is a pure substance made up of only one kind of atom. A compound is a substance that is made from the atoms of two or more elements that ...
8th Grade Science: 1st Six Weeks At-A
... Challenge students to create their own comic strip. Combine like elements from the same family and or group together to create one book. Students will create a 3-D model of a Boron atom. Research and summarize the history of the Atomic Theory. Assign students a specific element. Have students create ...
... Challenge students to create their own comic strip. Combine like elements from the same family and or group together to create one book. Students will create a 3-D model of a Boron atom. Research and summarize the history of the Atomic Theory. Assign students a specific element. Have students create ...
- Jersey College For Girls
... Q9. When lithium is burned in air, the two compounds lithium oxide (Li2O) and lithium nitride (Li3N) are formed. Both compounds are ionic and their ions can be represented by dot and cross diagrams. The dot and cross diagram for the ions in lithium oxide is ...
... Q9. When lithium is burned in air, the two compounds lithium oxide (Li2O) and lithium nitride (Li3N) are formed. Both compounds are ionic and their ions can be represented by dot and cross diagrams. The dot and cross diagram for the ions in lithium oxide is ...
Nuclear Chemistry
... • A nuclear reactor is self-sustaining due to the chain reaction. The neutrons that are produced from one reaction cause a new fission reaction to occur. ...
... • A nuclear reactor is self-sustaining due to the chain reaction. The neutrons that are produced from one reaction cause a new fission reaction to occur. ...
High School Curriculum Standards: Chemistry
... Chemistry is the study of matter—its properties and its changes. The idea that matter is made up of particles is over 2000 years old, but the idea of using properties of these particles to explain observable characteristics of matter has more recent origins. In ancient Greece, it was proposed that m ...
... Chemistry is the study of matter—its properties and its changes. The idea that matter is made up of particles is over 2000 years old, but the idea of using properties of these particles to explain observable characteristics of matter has more recent origins. In ancient Greece, it was proposed that m ...
200 Ways to Pass the Chemistry
... 18. Electrons can be excited to jump to higher energy levels. They emit energy as light when they fall from higher energy levels (excited state) back down to lower (ground state) energy levels. Bright line spectra are produced. 19. Elements are pure substances composed of atoms with the same atomic ...
... 18. Electrons can be excited to jump to higher energy levels. They emit energy as light when they fall from higher energy levels (excited state) back down to lower (ground state) energy levels. Bright line spectra are produced. 19. Elements are pure substances composed of atoms with the same atomic ...
final study guide answers - Ponce
... ___A_____ Types of matter that cannot be separated by physical means. ___E_____ A type of matter that is well mixed and can be separated by physical means. ___C_____ A form of matter that can only be separated by chemical means. ___A_____ The smallest unit of matter. ___I_____ A change in matter tha ...
... ___A_____ Types of matter that cannot be separated by physical means. ___E_____ A type of matter that is well mixed and can be separated by physical means. ___C_____ A form of matter that can only be separated by chemical means. ___A_____ The smallest unit of matter. ___I_____ A change in matter tha ...
are physical changes - Chemistry Information Site
... substances using physical or chemical means - Elements are the building blocks of chemistry! They are the simple things from which all other things are formed! ...
... substances using physical or chemical means - Elements are the building blocks of chemistry! They are the simple things from which all other things are formed! ...
Name - Quia
... Chemistry Midterm review –random extra questions *Test may cover other topics not included on this review, yet have been covered throughout the semester. ...
... Chemistry Midterm review –random extra questions *Test may cover other topics not included on this review, yet have been covered throughout the semester. ...
CHEMICAL REACTIONS
... 4. Check your answer to see if: – The numbers of atoms on both sides of the equation are now balanced. – The coefficients are in the lowest possible whole number ratios. (reduced) ...
... 4. Check your answer to see if: – The numbers of atoms on both sides of the equation are now balanced. – The coefficients are in the lowest possible whole number ratios. (reduced) ...
2A Final Exam Review Worksheet
... A. If there is 10.0 g of P4O10, find the mass of phosphoric acid formed. B. If there is also 10.0 g of perchloric acid, find the mass of phosphoric acid formed. C. Considering A & B, how much of the excess reactant remains after the reaction is complete. D. Find the number of phosphorus atoms in 10. ...
... A. If there is 10.0 g of P4O10, find the mass of phosphoric acid formed. B. If there is also 10.0 g of perchloric acid, find the mass of phosphoric acid formed. C. Considering A & B, how much of the excess reactant remains after the reaction is complete. D. Find the number of phosphorus atoms in 10. ...
COUNTING ATOMS
... CHEMICAL EQUATIONS • Some equations have a coefficient. • Coefficients are numbers that appear before elements in a chemical equation that change the number of reactants or products. • Example: • H2 + O2 H20 • The correct way to write this equation is: • 2H2 + O2 2H2O • The coefficients change ...
... CHEMICAL EQUATIONS • Some equations have a coefficient. • Coefficients are numbers that appear before elements in a chemical equation that change the number of reactants or products. • Example: • H2 + O2 H20 • The correct way to write this equation is: • 2H2 + O2 2H2O • The coefficients change ...
Honors Unit 5 Practice Test
... c. chlorine. b. sodium. d. fluorine. A negative ion is known as a(n) a. ionic radius. c. cation. b. valence electron. d. anion. In a row in the periodic table, as the atomic number increases, the atomic radius generally a. decreases. c. increases. b. remains constant. d. becomes immeasurable. In the ...
... c. chlorine. b. sodium. d. fluorine. A negative ion is known as a(n) a. ionic radius. c. cation. b. valence electron. d. anion. In a row in the periodic table, as the atomic number increases, the atomic radius generally a. decreases. c. increases. b. remains constant. d. becomes immeasurable. In the ...