C2 revision slides V3 + questions + MS
... increases number of collisions and increases rate Temperature: Particles have more energy and move faster and collide more often. More particles have energy greater than the activation energy so more successful collisions Catalyst: Catalysts change the rate of chemical reactions but are not used up ...
... increases number of collisions and increases rate Temperature: Particles have more energy and move faster and collide more often. More particles have energy greater than the activation energy so more successful collisions Catalyst: Catalysts change the rate of chemical reactions but are not used up ...
Ionic bonding - Animated Science
... increases number of collisions and increases rate Temperature: Particles have more energy and move faster and collide more often. More particles have energy greater than the activation energy so more successful collisions Catalyst: Catalysts change the rate of chemical reactions but are not used up ...
... increases number of collisions and increases rate Temperature: Particles have more energy and move faster and collide more often. More particles have energy greater than the activation energy so more successful collisions Catalyst: Catalysts change the rate of chemical reactions but are not used up ...
Chapter 4: The Structure of the Atom
... 5) An atom of a certain element has a mass number of 112 and is known to contain 64 neutrons. Identify the atom and determine the number of electrons and protons the atom contains. 6) A neutral atom has 78 electrons and a mass number of 198. Identify the atom and determine the number of protons ...
... 5) An atom of a certain element has a mass number of 112 and is known to contain 64 neutrons. Identify the atom and determine the number of electrons and protons the atom contains. 6) A neutral atom has 78 electrons and a mass number of 198. Identify the atom and determine the number of protons ...
File - StarpointLearns
... 13. Explain, in terms of subatomic particles, why an oxide ion, O2-, has a negative charge. 14. Compare the number of protons to the number of electrons in a positive ion. 15. Compare the number of protons to the number of electrons in a negative ion. 16. Explain, in terms of subatomic particles, wh ...
... 13. Explain, in terms of subatomic particles, why an oxide ion, O2-, has a negative charge. 14. Compare the number of protons to the number of electrons in a positive ion. 15. Compare the number of protons to the number of electrons in a negative ion. 16. Explain, in terms of subatomic particles, wh ...
ATOMOS
... Describe the particle theory of matter. Use the Rutherford / Bohr models to differentiate among the three basic particles in the atom (proton, neutron, and electron) and their charges, relative masses, and locations. Compare the Bohr atomic model to the electron cloud model with respect to their ...
... Describe the particle theory of matter. Use the Rutherford / Bohr models to differentiate among the three basic particles in the atom (proton, neutron, and electron) and their charges, relative masses, and locations. Compare the Bohr atomic model to the electron cloud model with respect to their ...
2 – Atomic Structure - Science at St. Dominics
... Isotopes are atoms of the same element that have the same atomic numbers but different mass numbers as they have different amounts of neutrons in their nuclei. ...
... Isotopes are atoms of the same element that have the same atomic numbers but different mass numbers as they have different amounts of neutrons in their nuclei. ...
3.1 The Element A. Abundances of Eleme B. Names and Symbols
... and soil on the earth's crust. In these materials, oxygen is not present as O2 molecules but exists in compounds that usually contain silicon and aluminum atoms. The list of elements found in living matter is very different from that for the earth's crust, as shown in Table 3.2. Oxygen, carbon, hydr ...
... and soil on the earth's crust. In these materials, oxygen is not present as O2 molecules but exists in compounds that usually contain silicon and aluminum atoms. The list of elements found in living matter is very different from that for the earth's crust, as shown in Table 3.2. Oxygen, carbon, hydr ...
primes - The Institute of Mathematical Sciences
... Even if we know whether a number is prime or composite, finding a factor might still be very difficult. In 1876 mathematicians discovered that the number 267-1 (this is very long to write down so I will not even try) is composite, but they did not know any of its factors. Of course, 267 has only one ...
... Even if we know whether a number is prime or composite, finding a factor might still be very difficult. In 1876 mathematicians discovered that the number 267-1 (this is very long to write down so I will not even try) is composite, but they did not know any of its factors. Of course, 267 has only one ...
Chemical Reactions
... 2. Find the number of atoms for each element on the left side. Compare those against the number of the atoms of the same element on the right side. 3. Determine where to place coefficients in front of formulas so that the left side has the same number of atoms as the right side for EACH element in o ...
... 2. Find the number of atoms for each element on the left side. Compare those against the number of the atoms of the same element on the right side. 3. Determine where to place coefficients in front of formulas so that the left side has the same number of atoms as the right side for EACH element in o ...
Final Exam - Dawson College
... Question 14 a. Sketch the phase diagram for carbon dioxide (CO2) from the following data: i. The triple point is at 5.2 atm, and –57°C ii. The critical point is at 72.8 atm, and 31°C. iii. At a pressure of 1 atm, the solid-gas phase transition takes place at –78°C iv. At a pressure of 72.8 atm, the ...
... Question 14 a. Sketch the phase diagram for carbon dioxide (CO2) from the following data: i. The triple point is at 5.2 atm, and –57°C ii. The critical point is at 72.8 atm, and 31°C. iii. At a pressure of 1 atm, the solid-gas phase transition takes place at –78°C iv. At a pressure of 72.8 atm, the ...
File - Team 8-2 Gregory Middle School
... This could only mean that the gold atoms were mostly open space, not a pudding filled with a positively charged material. Rutherford concluded that an atom had a small, dense, positively charged center that repelled his positively charged “bullets.” He called the center of the atom the “nucleus ...
... This could only mean that the gold atoms were mostly open space, not a pudding filled with a positively charged material. Rutherford concluded that an atom had a small, dense, positively charged center that repelled his positively charged “bullets.” He called the center of the atom the “nucleus ...
Chapter 2
... Since some particles were deflected at large angles, Thompson’s model could not be correct. ...
... Since some particles were deflected at large angles, Thompson’s model could not be correct. ...
Chapter 5
... 1. An element is composed of tiny, indivisible, indestructible particles called atoms. 2. All atoms of an element are identical and have the same properties. 3. Atoms of different elements combine to form compounds. ...
... 1. An element is composed of tiny, indivisible, indestructible particles called atoms. 2. All atoms of an element are identical and have the same properties. 3. Atoms of different elements combine to form compounds. ...
Exam 1 Review Sheet Honors Biology This is to be used for
... 24. Draw a neutral oxygen atom with a mass of 16 in the lowest energy state (also called the ground state because all the electrons are closest to the “ground” if you think of the nucleus as the Earth). Now modify your atom so that it is not in the ground state. 25. Explain why the electrons in the ...
... 24. Draw a neutral oxygen atom with a mass of 16 in the lowest energy state (also called the ground state because all the electrons are closest to the “ground” if you think of the nucleus as the Earth). Now modify your atom so that it is not in the ground state. 25. Explain why the electrons in the ...
The Atom
... If you simply average the three, 2 amu (1 amu + 2 amu + 3 amu/3) would be the atomic mass, but since 99.9% of the Hydrogen is Protium, the atomic mass is around 1 amu (.999 x 1 amu) ...
... If you simply average the three, 2 amu (1 amu + 2 amu + 3 amu/3) would be the atomic mass, but since 99.9% of the Hydrogen is Protium, the atomic mass is around 1 amu (.999 x 1 amu) ...
Chemical Reactions
... • Spontaneous reactions—occur naturally, the process is unaided. • Example: –Decomposition of dead matter = spontaneous endothermic reactions. (absorbs heat energy) –Forest fire = spontaneous exothermic reactions. (releases heat energy) ...
... • Spontaneous reactions—occur naturally, the process is unaided. • Example: –Decomposition of dead matter = spontaneous endothermic reactions. (absorbs heat energy) –Forest fire = spontaneous exothermic reactions. (releases heat energy) ...
Atomic Theories and Models - MrD-Home
... • The number of __________ found in the nucleus of an atom • Atoms have no overall electric charge (i.e. charge of atom is zero) ...
... • The number of __________ found in the nucleus of an atom • Atoms have no overall electric charge (i.e. charge of atom is zero) ...
Arts and Sciences Program Chemistry Department Chemistry Placement Test
... Calculate the mass of the air contained in a room that measures 2.50 m 5.50 m 3.00 m (density of air = 1.29 g/dm3 at 25C). ...
... Calculate the mass of the air contained in a room that measures 2.50 m 5.50 m 3.00 m (density of air = 1.29 g/dm3 at 25C). ...
chemical bonds: the formation of compounds from atoms
... farther away from the nucleus and is shielded by more inner electrons than are neon outer electrons. 3. When a third electron is removed from beryllium, it must come from a very stable electron structure corresponding to that of the noble gas, helium. In addition, the third electron must be removed ...
... farther away from the nucleus and is shielded by more inner electrons than are neon outer electrons. 3. When a third electron is removed from beryllium, it must come from a very stable electron structure corresponding to that of the noble gas, helium. In addition, the third electron must be removed ...
Chapter 11
... farther away from the nucleus and is shielded by more inner electrons than are neon outer electrons. 3. When a third electron is removed from beryllium, it must come from a very stable electron structure corresponding to that of the noble gas, helium. In addition, the third electron must be removed ...
... farther away from the nucleus and is shielded by more inner electrons than are neon outer electrons. 3. When a third electron is removed from beryllium, it must come from a very stable electron structure corresponding to that of the noble gas, helium. In addition, the third electron must be removed ...
final exam review chapter 1-4
... 5. If you have 4 g NaOH, and 10 g HBr, what is the limiting reagent and how much salt is produced? In lab if you produce1 g salt, what is the percent yield? ...
... 5. If you have 4 g NaOH, and 10 g HBr, what is the limiting reagent and how much salt is produced? In lab if you produce1 g salt, what is the percent yield? ...
Prior knowledge catch-up student sheet for Chapter 3 Quantitative
... For example, the atomic number of sodium is 11 and the mass number is 23. Number of protons = 11 Number of electrons = 11 Number of neutrons = 23 − 11 = 12 Chemical reactions can be represented using a formula to show reactants and products in a chemical equation, with an arrow in between. An equati ...
... For example, the atomic number of sodium is 11 and the mass number is 23. Number of protons = 11 Number of electrons = 11 Number of neutrons = 23 − 11 = 12 Chemical reactions can be represented using a formula to show reactants and products in a chemical equation, with an arrow in between. An equati ...
Unit 5 Study Guide
... Unit 5 Study Guide: Chemical Reactions 1. What are the 7 diatomic molecules? ...
... Unit 5 Study Guide: Chemical Reactions 1. What are the 7 diatomic molecules? ...
