Name: Period:______ Date: CHEMISTRY Chapter 3 AND Nuclear
... 27. When chemical reactions take place atoms rearrange in whole number ratios. Atoms do not split in half ...
... 27. When chemical reactions take place atoms rearrange in whole number ratios. Atoms do not split in half ...
1.1 The Changing Atom - Beechen Cliff Science Faculty
... cathode rays would flow from the negatively charged electrode to the positive electrode. This lead to the development of the cathode ray tube. When the cathode ray beam was placed between charged plates, it deflected toward the positively charged plate, indicating that the beam was made of negativel ...
... cathode rays would flow from the negatively charged electrode to the positive electrode. This lead to the development of the cathode ray tube. When the cathode ray beam was placed between charged plates, it deflected toward the positively charged plate, indicating that the beam was made of negativel ...
PRACTICE PROBLEMS EXAM 1,2 and 3 1311
... 1) A small amount of salt dissolved in water is an example of a __________. 2) Which one of the following is a pure substance? A) concrete B) wood C) salt water D) elemental copper E) milk 3) For which of the following can the composition vary? A) pure substance B) element C) both homogeneous and he ...
... 1) A small amount of salt dissolved in water is an example of a __________. 2) Which one of the following is a pure substance? A) concrete B) wood C) salt water D) elemental copper E) milk 3) For which of the following can the composition vary? A) pure substance B) element C) both homogeneous and he ...
Chapter # 4 notes
... An element cannot be decomposed into a simpler substance. An atom is the smallest particle of an element that can exist. An atom is the smallest unit of an element that can enter into a chemical reaction. An atom is very small The diameter of an atom is 0.1 to 0.5 nm. This is 1 to 5 ten billionths o ...
... An element cannot be decomposed into a simpler substance. An atom is the smallest particle of an element that can exist. An atom is the smallest unit of an element that can enter into a chemical reaction. An atom is very small The diameter of an atom is 0.1 to 0.5 nm. This is 1 to 5 ten billionths o ...
development of atomic theory
... Thomson developed his plum-pudding model based on the results of his experiments with the cathode-ray tube. His experimental setup included a glass tube with a fluorescent coating painted onto one end. Two metal disks called electrodes are placed halfway down the tube. When the electrodes are connec ...
... Thomson developed his plum-pudding model based on the results of his experiments with the cathode-ray tube. His experimental setup included a glass tube with a fluorescent coating painted onto one end. Two metal disks called electrodes are placed halfway down the tube. When the electrodes are connec ...
Chapter 1 Chemistry: the study of the composition of matter and the
... Be able to solve for the missing value in a density problem Temperature conversion: kelvin-Celsius and reverse Chapter 5 ...
... Be able to solve for the missing value in a density problem Temperature conversion: kelvin-Celsius and reverse Chapter 5 ...
Concept Reviews Answer sheet Section: matter and Energy 1. a
... 3. Coffee at 38°C has more kinetic energy than coffee at 34°C. Although there is less tea than coffee, the temperature of the tea is greater, so the tea has more average kinetic energy than the coffee. 4. The temperature, and therefore the kinetic energy of the particles in 0.5 L of coffee and 0.25 ...
... 3. Coffee at 38°C has more kinetic energy than coffee at 34°C. Although there is less tea than coffee, the temperature of the tea is greater, so the tea has more average kinetic energy than the coffee. 4. The temperature, and therefore the kinetic energy of the particles in 0.5 L of coffee and 0.25 ...
Chapter 3 Atoms: The Building Blocks of Matter
... that a similar model could be applied to all atoms. However, Bohr’s approach _____ _____ _________ the spectra of atoms with _______ _______ _____ __________. Nor did Bohr’s theory explain the ___________ ___________ ___ _______. The Quantum Model of the Atom In 1924, the French scientist Louis de B ...
... that a similar model could be applied to all atoms. However, Bohr’s approach _____ _____ _________ the spectra of atoms with _______ _______ _____ __________. Nor did Bohr’s theory explain the ___________ ___________ ___ _______. The Quantum Model of the Atom In 1924, the French scientist Louis de B ...
3UE-Exam Review-June2010 - Savita Pall and Chemistry
... 19. When is ionic bonding likely to occur between two atoms? a) when both atoms have low ionization energy and low electron affinity b) when both atoms have high ionization energy and low electron affinity c) when both atoms have high ionization energy and high electron affinity d) when one atom has ...
... 19. When is ionic bonding likely to occur between two atoms? a) when both atoms have low ionization energy and low electron affinity b) when both atoms have high ionization energy and low electron affinity c) when both atoms have high ionization energy and high electron affinity d) when one atom has ...
2.1 Atomic Theory
... Elements in the same group of the periodic table have similar electron configurations in their valence shells. • A valence shell is the outermost electron shell of an atom • A valence electron is an electron in the valence shell of an atom. • The group numbers from 1A through 8A give the numbers of ...
... Elements in the same group of the periodic table have similar electron configurations in their valence shells. • A valence shell is the outermost electron shell of an atom • A valence electron is an electron in the valence shell of an atom. • The group numbers from 1A through 8A give the numbers of ...
elements and isotopes - vocabulary
... isotope A species of atom; each atom of a particular isotope has a specific number of protons and a specific number of neutrons in the nucleus which are the same for all atoms of the isotope, but are not necessarily equal to each other. atomic number The number of protons in the nucleus of one atom; ...
... isotope A species of atom; each atom of a particular isotope has a specific number of protons and a specific number of neutrons in the nucleus which are the same for all atoms of the isotope, but are not necessarily equal to each other. atomic number The number of protons in the nucleus of one atom; ...
Atomic structure
... Bohr refined Rutherford's idea by adding that the electrons were in orbits. Rather like planets orbiting the sun. With each orbit only able to contain a set number of electrons. ...
... Bohr refined Rutherford's idea by adding that the electrons were in orbits. Rather like planets orbiting the sun. With each orbit only able to contain a set number of electrons. ...
Unit Test: Atomic Structure
... B. Which of the isotopes are radioactive and which are stable? 7…Predict the most likely atomic mass for an element containing 12 protons. ...
... B. Which of the isotopes are radioactive and which are stable? 7…Predict the most likely atomic mass for an element containing 12 protons. ...
Chapter 2 Chemical context of Life
... energy level. Energy levels are also referred to as electron shells. The distribution of electrons in energy levels or shells around the nucleus is called the electron configuration of the atom. Electrons that are in an energy level distant from the nucleus have more energy than those closer to the ...
... energy level. Energy levels are also referred to as electron shells. The distribution of electrons in energy levels or shells around the nucleus is called the electron configuration of the atom. Electrons that are in an energy level distant from the nucleus have more energy than those closer to the ...
Presentation
... that can be broken down by chemical methods When they are broken down, the pieces have completely different properties than the compound. Made of molecules- two or more atoms ...
... that can be broken down by chemical methods When they are broken down, the pieces have completely different properties than the compound. Made of molecules- two or more atoms ...
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 ...
DO NOW - PBworks
... Reminder: Enter the classroom, begin the Do Now immediately, silently and independently. ...
... Reminder: Enter the classroom, begin the Do Now immediately, silently and independently. ...
The Atom
... Niels Bohr found evidence that electrons in atoms are arranged in energy levels. The lowest energy level is closest to the nucleus and can hold only two electrons. Higher energy levels are farther from the nucleus and can contain more electrons. This simplified model shows a nucleus of protons and ...
... Niels Bohr found evidence that electrons in atoms are arranged in energy levels. The lowest energy level is closest to the nucleus and can hold only two electrons. Higher energy levels are farther from the nucleus and can contain more electrons. This simplified model shows a nucleus of protons and ...
isotopes
... • You can also use the mass number and the name of the element to designate the atom or isotope – This is called hyphen notation • For example, two isotopes of carbon are carbon-12 and carbon-13 – The nuclear symbols for these two isotopes would be: ...
... • You can also use the mass number and the name of the element to designate the atom or isotope – This is called hyphen notation • For example, two isotopes of carbon are carbon-12 and carbon-13 – The nuclear symbols for these two isotopes would be: ...
Bohr Models - Mrs. Lindenlaub
... can’t just shove all of the electrons into the first orbit of an electron. Electrons live in something called shells or energy levels. Only ...
... can’t just shove all of the electrons into the first orbit of an electron. Electrons live in something called shells or energy levels. Only ...
Bohr Model - Wikispaces
... defined orbits around the nucleus. Each orbit corresponds to a different energy level. The further out the orbit, the higher the energy level ...
... defined orbits around the nucleus. Each orbit corresponds to a different energy level. The further out the orbit, the higher the energy level ...
CH4
... a. All elements are composed of tiny particles called atoms b. Atoms of the same atom are identical and are different from all other elements. c. Atoms of different elements can physically or chemically combine in simple whole number ratios to form compounds d. Chemical reactions may separate, join, ...
... a. All elements are composed of tiny particles called atoms b. Atoms of the same atom are identical and are different from all other elements. c. Atoms of different elements can physically or chemically combine in simple whole number ratios to form compounds d. Chemical reactions may separate, join, ...
Chapter 4 Notes
... in the nucleus, also indicates the # of electrons charged of the atom, mass is slightly more than 1 amu ...
... in the nucleus, also indicates the # of electrons charged of the atom, mass is slightly more than 1 amu ...