CHEMISTRY: MIDTERM EXAM REVIEW SPRING 2013 Multiple
... b. moves within its atomic orbital c. jumps from a lower to a higher energy level d. drops from a higher to a lower energy level ____ 27. What must be done to be certain that a chemical change has taken place? a. Demonstrate that a release of energy occurred after the change. b. Check for the produc ...
... b. moves within its atomic orbital c. jumps from a lower to a higher energy level d. drops from a higher to a lower energy level ____ 27. What must be done to be certain that a chemical change has taken place? a. Demonstrate that a release of energy occurred after the change. b. Check for the produc ...
Explaining the Periodic Table (6.7)
... • If elements are the building blocks of all other matter, what are they made of? • There are three particles that make up an atom or element: • protons • electrons • neutrons • These are called subatomic particles because they are smaller or below an atom. ...
... • If elements are the building blocks of all other matter, what are they made of? • There are three particles that make up an atom or element: • protons • electrons • neutrons • These are called subatomic particles because they are smaller or below an atom. ...
GEO143_activity_2
... Number of Protons = Atomic Number (Use the large colored marshmallows for protons) Number of Neutrons = Atomic Mass – Atomic Number (Use the large white marshmallows for neutrons) Number of Electrons = Number of Protons (Use the small colored marshmallows for electrons) ...
... Number of Protons = Atomic Number (Use the large colored marshmallows for protons) Number of Neutrons = Atomic Mass – Atomic Number (Use the large white marshmallows for neutrons) Number of Electrons = Number of Protons (Use the small colored marshmallows for electrons) ...
The atom
... Atomic number (Z- the whole number on the PT) of an element is the number of protons in the nucleus of each atom of that element. ...
... Atomic number (Z- the whole number on the PT) of an element is the number of protons in the nucleus of each atom of that element. ...
Atoms and the Periodic Table
... – Suggested electrons in an atom move in set paths around the nucleus. • Much like planets orbit the sun in our solar system. –Energy levels – any of the possible energies an electron may have in an atom. »Gain energy to move to a higher level »Lose energy to move to a lower level ...
... – Suggested electrons in an atom move in set paths around the nucleus. • Much like planets orbit the sun in our solar system. –Energy levels – any of the possible energies an electron may have in an atom. »Gain energy to move to a higher level »Lose energy to move to a lower level ...
3-10 What are isotopes?
... 4. For which isotopes have scientists not been able to determine the atomic mass? Can you think of a reason for this? ____________________________________________________________________________ __________________________________________________________________________________________ 5. According t ...
... 4. For which isotopes have scientists not been able to determine the atomic mass? Can you think of a reason for this? ____________________________________________________________________________ __________________________________________________________________________________________ 5. According t ...
File
... Most of the particles passed right through A few particles were deflected VERY FEW were greatly deflected ...
... Most of the particles passed right through A few particles were deflected VERY FEW were greatly deflected ...
Use the following to answer questions 1-14:
... Fill in the blank with the most appropriate term from the chapter, unit, or course. To summarize what happens to substances during a chemical reaction, scientists use a chemical _______________________. Arsenic has a total of 33 electrons. It has _______________________ electron shells around its nu ...
... Fill in the blank with the most appropriate term from the chapter, unit, or course. To summarize what happens to substances during a chemical reaction, scientists use a chemical _______________________. Arsenic has a total of 33 electrons. It has _______________________ electron shells around its nu ...
Atomic Theory Review 3 Which scientist described atoms as
... The number of electrons in an atom is the same for all neutral atoms of that element. True False ...
... The number of electrons in an atom is the same for all neutral atoms of that element. True False ...
Student midterm review sheet
... Pg. 109/Q11; Pg. 122/Q41 What are the three types of subatomic particles? What are their properties? Pg. 109/Q12;Pg. 122/Q43 Roles that Thompson, Millikan, Goldstein, & Chadwick played in identifying the three types of subatomic particles Pg. 109/Q13 to 15 Rutherford Atomic Model ...
... Pg. 109/Q11; Pg. 122/Q41 What are the three types of subatomic particles? What are their properties? Pg. 109/Q12;Pg. 122/Q43 Roles that Thompson, Millikan, Goldstein, & Chadwick played in identifying the three types of subatomic particles Pg. 109/Q13 to 15 Rutherford Atomic Model ...
Atomic structure
... He suggested that the there was a small, dense, positive charge in a central nucleus. With this holding the large, negative electron cloud in place by electrical attraction. ...
... He suggested that the there was a small, dense, positive charge in a central nucleus. With this holding the large, negative electron cloud in place by electrical attraction. ...
Chapter 4 Section 4.1 & 4.2
... Dalton’s Atomic Theory 4. Chemical reactions occur when atoms are separated from each other, joined, or rearranged in different combinations. Atoms of one element are never changed into atoms of another element as a result of a chemical reaction. Compound made by chemically combining atoms of eleme ...
... Dalton’s Atomic Theory 4. Chemical reactions occur when atoms are separated from each other, joined, or rearranged in different combinations. Atoms of one element are never changed into atoms of another element as a result of a chemical reaction. Compound made by chemically combining atoms of eleme ...
Atomic Theories- Part I - Tenafly Public Schools
... Thompson showed that the production of the cathode ray was not dependent on the type of gas in the tube, or the type of metal used for the electrodes. He concluded that these particles were part of every atom. ...
... Thompson showed that the production of the cathode ray was not dependent on the type of gas in the tube, or the type of metal used for the electrodes. He concluded that these particles were part of every atom. ...
File
... A) Their metallic properties decrease and their atomic radii decrease. B) Their metallic properties decrease and their atomic radii increase. C) Their metallic properties increase and their atomic radii decrease. D) Their metallic properties increase and their atomic radii increase. 39. An ion of wh ...
... A) Their metallic properties decrease and their atomic radii decrease. B) Their metallic properties decrease and their atomic radii increase. C) Their metallic properties increase and their atomic radii decrease. D) Their metallic properties increase and their atomic radii increase. 39. An ion of wh ...
Pre-Lecture 12
... fluid, it is “positively charged” and if it is deficient, it is “negatively charged”. The fluid repels itself but attracts other objects. Famous kite experiment in 1752, showing lightning was electricity and can flow in gas as well as solid. -- Crooke’s tube 1870’s: precurser of neon signs and catho ...
... fluid, it is “positively charged” and if it is deficient, it is “negatively charged”. The fluid repels itself but attracts other objects. Famous kite experiment in 1752, showing lightning was electricity and can flow in gas as well as solid. -- Crooke’s tube 1870’s: precurser of neon signs and catho ...
Atomic Models
... invisible) particles which he calls atoms. Joseph J Thomson, an English , described atoms like a plum pudding. The description was known as the plum model. In this model atoms were presented as having a heavy positive pudding with the light negatively charged ...
... invisible) particles which he calls atoms. Joseph J Thomson, an English , described atoms like a plum pudding. The description was known as the plum model. In this model atoms were presented as having a heavy positive pudding with the light negatively charged ...
File
... 103. H2O2, hydrogen peroxide, naturally breaks down into H2O and O2 over time. MnO2, manganese dioxide, can be used to lower the energy of activation needed for this reaction to take place and, thus, increase the rate of reaction. What type of substance is MnO2? (Std 8c) A. A catalyst B. An enhancer ...
... 103. H2O2, hydrogen peroxide, naturally breaks down into H2O and O2 over time. MnO2, manganese dioxide, can be used to lower the energy of activation needed for this reaction to take place and, thus, increase the rate of reaction. What type of substance is MnO2? (Std 8c) A. A catalyst B. An enhancer ...
File - Science by Shaw
... Protons and Neutrons All of an atom’s positive charge Almost all of an atom’s mass. ...
... Protons and Neutrons All of an atom’s positive charge Almost all of an atom’s mass. ...
History of the Atom
... between two charged plates. > Calculated how strong an applied electric field has to be to stop the drop from falling due to gravity. ...
... between two charged plates. > Calculated how strong an applied electric field has to be to stop the drop from falling due to gravity. ...
Exam 3 Review
... = 0, 1, 2, 3, 4, 5, .......(n-1) = s, p, d, f, g, h, .......(n-1) The symbol for the magnetic quantum number is m which defines the orbital. m = - , (- + 1), (- +2), .....0, ......., ( -2), ( -1), The last quantum number is the spin quantum number which has the symbol m s which chara ...
... = 0, 1, 2, 3, 4, 5, .......(n-1) = s, p, d, f, g, h, .......(n-1) The symbol for the magnetic quantum number is m which defines the orbital. m = - , (- + 1), (- +2), .....0, ......., ( -2), ( -1), The last quantum number is the spin quantum number which has the symbol m s which chara ...
Science - Byron High School
... ex. Think of cutting a piece of aluminum foil into smaller and smaller pieces. How far can it be cut? ...
... ex. Think of cutting a piece of aluminum foil into smaller and smaller pieces. How far can it be cut? ...