Chapter 2
... Protons and neutrons make up the almost the entire mass of each atom and are located in the nucleus. In our model of the atom, the electrons are arranged in orbits or shells around the nucleus and equal the number of protons in a neutral atom. However, because they may be a long way from the nucleus ...
... Protons and neutrons make up the almost the entire mass of each atom and are located in the nucleus. In our model of the atom, the electrons are arranged in orbits or shells around the nucleus and equal the number of protons in a neutral atom. However, because they may be a long way from the nucleus ...
Atomic Radii
... When the sodium ion loses an electron it loses an energy level, so it only has 2 electron shells. Sodium atoms have three electron shells. This loss of a shell means that the effective nuclear charge on the electrons is increased. Losing an electron shell means that the electrons are now closer to t ...
... When the sodium ion loses an electron it loses an energy level, so it only has 2 electron shells. Sodium atoms have three electron shells. This loss of a shell means that the effective nuclear charge on the electrons is increased. Losing an electron shell means that the electrons are now closer to t ...
Chemistry Final Exam Study Guide_S2014
... a. These bonds are formed by delocalized electrons in an “electron sea.” b. These bonds involve a transfer of electrons. c. Substances containing these bonds are malleable and have very high melting points. d. Substances containing these bonds do not conduct electricity and have low melting points. ...
... a. These bonds are formed by delocalized electrons in an “electron sea.” b. These bonds involve a transfer of electrons. c. Substances containing these bonds are malleable and have very high melting points. d. Substances containing these bonds do not conduct electricity and have low melting points. ...
3. all atoms of a given element are identical in mass and other
... not break apart and are not created nor destroyed 3. all atoms of a given element are identical in mass and other properties (no longer true) 4. atoms of different elements differ in mass and other properties 5. atoms of one element can combine with atoms of another element to form compounds ...
... not break apart and are not created nor destroyed 3. all atoms of a given element are identical in mass and other properties (no longer true) 4. atoms of different elements differ in mass and other properties 5. atoms of one element can combine with atoms of another element to form compounds ...
Topic 1 – Atomic structure and the periodic table
... e.g he switched tellurium and iodine around so that they would be in the same groups as elements with similar properties (i.e by switching them, iodine was next to bromine, chlorine, fluorine…) o realised from the big jumps in atomic mass that there were still some elements to discoverleft some g ...
... e.g he switched tellurium and iodine around so that they would be in the same groups as elements with similar properties (i.e by switching them, iodine was next to bromine, chlorine, fluorine…) o realised from the big jumps in atomic mass that there were still some elements to discoverleft some g ...
Review Questions
... electricity, high density, high melting temperature. Nonmetals tend to be gases or brittle solids at room temperature, poor conductors of heat and electricity (insulators), low density, low melting temperature Metalloids (Semi-metals) dull, brittle, semi-conductors (used in computer chips), properti ...
... electricity, high density, high melting temperature. Nonmetals tend to be gases or brittle solids at room temperature, poor conductors of heat and electricity (insulators), low density, low melting temperature Metalloids (Semi-metals) dull, brittle, semi-conductors (used in computer chips), properti ...
ch04_sec3_as - LCMR School District
... 〉 How are the energy levels of an atom filled? 〉 The number of energy levels that are filled in an atom depends on the number of electrons. • valence electron: an electron that is found in the outermost shell of an atom and that determines the atom’s chemical properties ...
... 〉 How are the energy levels of an atom filled? 〉 The number of energy levels that are filled in an atom depends on the number of electrons. • valence electron: an electron that is found in the outermost shell of an atom and that determines the atom’s chemical properties ...
Intro to Atoms
... negative charges that were attracted to positive charges. He called those electrons. Since an atom by itself doesn’t have a charge, then Thomson realized that each atom must have the same number of protons and neutron. He created his atomic model based on his experiments (the plum-pudding model) ...
... negative charges that were attracted to positive charges. He called those electrons. Since an atom by itself doesn’t have a charge, then Thomson realized that each atom must have the same number of protons and neutron. He created his atomic model based on his experiments (the plum-pudding model) ...
No Slide Title
... • Even atomic mass & odd number I = whole integer (14N, 2H, 10B) • Odd atomic mass I = half integer (1H, 13C, 15N, 31P) • The spin states of the nucleus (m) are quantified: ...
... • Even atomic mass & odd number I = whole integer (14N, 2H, 10B) • Odd atomic mass I = half integer (1H, 13C, 15N, 31P) • The spin states of the nucleus (m) are quantified: ...
Section 3: Modern Atomic Theory Atoms Section 3
... 〉 How are the energy levels of an atom filled? 〉 The number of energy levels that are filled in an atom depends on the number of electrons. • valence electron: an electron that is found in the outermost shell of an atom and that determines the atom’s chemical properties ...
... 〉 How are the energy levels of an atom filled? 〉 The number of energy levels that are filled in an atom depends on the number of electrons. • valence electron: an electron that is found in the outermost shell of an atom and that determines the atom’s chemical properties ...
Finding the Amounts of Subatomic Particles
... properties as the element. The nucleus is the central part of an atom. It is made up of protons and neutrons and contains most of the atom’s mass. The nucleus was discovered by Ernest Rutherford in 1911. ...
... properties as the element. The nucleus is the central part of an atom. It is made up of protons and neutrons and contains most of the atom’s mass. The nucleus was discovered by Ernest Rutherford in 1911. ...
Biochemistry I (CHE 418 / 5418)
... If 2.10 mol N2 and 5.70 mol H2 react, what is the limiting reagent. Ask the question, how many mol of H2 is needed to react with .10 ...
... If 2.10 mol N2 and 5.70 mol H2 react, what is the limiting reagent. Ask the question, how many mol of H2 is needed to react with .10 ...
A time line discussion on the discovery of radioactivity and isotopes
... and cause various materials to flouresce. This discovery is a bit off the track taken by this chronology, but it alerted scientists to the possibility of other undiscovered forms of radiation. 1896 Antoine-Henri Becquerel discovers rays produced by uranium on March 1, the first observation of natura ...
... and cause various materials to flouresce. This discovery is a bit off the track taken by this chronology, but it alerted scientists to the possibility of other undiscovered forms of radiation. 1896 Antoine-Henri Becquerel discovers rays produced by uranium on March 1, the first observation of natura ...
the atom
... chemically into simpler substances. Hydrogen and oxygen are examples of elements. A compound when composed of two or more types of elements combined in a definite ratio, and can be decomposed by a chemical change into two or more other pure substances. Water is a compound composed of two parts hydro ...
... chemically into simpler substances. Hydrogen and oxygen are examples of elements. A compound when composed of two or more types of elements combined in a definite ratio, and can be decomposed by a chemical change into two or more other pure substances. Water is a compound composed of two parts hydro ...
The History of the Atom
... fluorescent gas and the whole tube will light up. 4. This beam will always travel straight if not interfered with. 5. The deflection coils each have a specific charge. One is positive and the other is negative. 6. Thomson showed (as in the diagram above) that the charge would deflect away from the n ...
... fluorescent gas and the whole tube will light up. 4. This beam will always travel straight if not interfered with. 5. The deflection coils each have a specific charge. One is positive and the other is negative. 6. Thomson showed (as in the diagram above) that the charge would deflect away from the n ...
Chapter 4 Review ans.. - hrsbstaff.ednet.ns.ca
... density, high melting temperature. Nonmetals tend to be gases or brittle solids at room temperature, poor conductors of heat and electricity (insulators), low density, low melting temperature Metalloids (Semi-metals) dull, brittle, semi-conductors (used in computer chips), properties of both metals ...
... density, high melting temperature. Nonmetals tend to be gases or brittle solids at room temperature, poor conductors of heat and electricity (insulators), low density, low melting temperature Metalloids (Semi-metals) dull, brittle, semi-conductors (used in computer chips), properties of both metals ...
Chapter 3: The Atom
... Dalton first expressed this observation in 1803 and it is sometimes called Dalton's Law ► When elements combine they do so in a ratio of small whole numbers. Ex.) carbon and oxygen react to form CO or CO2, but not CO1.8 ...
... Dalton first expressed this observation in 1803 and it is sometimes called Dalton's Law ► When elements combine they do so in a ratio of small whole numbers. Ex.) carbon and oxygen react to form CO or CO2, but not CO1.8 ...
What is an isotope?
... What is an isotope? Number of protons for an atom of a specific element never changes. Number of neutrons can change. Two atoms with equal protons but different neutrons are called isotopes of each other. All atoms in existence are isotopes! Some isotopes are just more common than others. ...
... What is an isotope? Number of protons for an atom of a specific element never changes. Number of neutrons can change. Two atoms with equal protons but different neutrons are called isotopes of each other. All atoms in existence are isotopes! Some isotopes are just more common than others. ...
PowerPoint for Cornell Notes
... Oxidation (redox) is a type of chemical reaction in which electrons are transferred from one substance to another. For oxidation to occur, one substance must lose electrons and a second substance must gain the lost electrons. The substance gaining electrons is said to be reduced and the substance lo ...
... Oxidation (redox) is a type of chemical reaction in which electrons are transferred from one substance to another. For oxidation to occur, one substance must lose electrons and a second substance must gain the lost electrons. The substance gaining electrons is said to be reduced and the substance lo ...
Atomic Terms/People
... that matter is continuous and not made of smaller particles the continuous substance known as hyle. This was believed until the 17th century Isaac Newton and Robert Boyle Both believed in the 17th century that elements were made of atoms but had no proof. John Dalton an English Chemist state ...
... that matter is continuous and not made of smaller particles the continuous substance known as hyle. This was believed until the 17th century Isaac Newton and Robert Boyle Both believed in the 17th century that elements were made of atoms but had no proof. John Dalton an English Chemist state ...
Chapter 1 Vocabulary
... the atomic orbitals from which it is formed. 2. Atomic Mass – The average mass number of the atoms of an element. 3. Bond Angle – The angle formed between two adjacent bonds. 4. Bond Length – The equilibrium distance between the nuclei of two atoms that are bonded to each other. 5. Bond Strength – A ...
... the atomic orbitals from which it is formed. 2. Atomic Mass – The average mass number of the atoms of an element. 3. Bond Angle – The angle formed between two adjacent bonds. 4. Bond Length – The equilibrium distance between the nuclei of two atoms that are bonded to each other. 5. Bond Strength – A ...
Chapter 6 Quiz
... ______10. When atoms share electrons, the electrical attraction of an atom for the shared electrons is called the atom's a. electron affinity. b. resonance. c. electronegativity. d. hybridization. ______11. If the atoms that share electrons have an unequal attraction for the electrons, the bond is c ...
... ______10. When atoms share electrons, the electrical attraction of an atom for the shared electrons is called the atom's a. electron affinity. b. resonance. c. electronegativity. d. hybridization. ______11. If the atoms that share electrons have an unequal attraction for the electrons, the bond is c ...