Grade 11 Chemistry E.. - hrsbstaff.ednet.ns.ca
... 2. Classify the following changes as physical or chemical: a) food spoils b) an icicle melts c) a nail rusts d) oil is pumped out of a well f) salt dissolves in water g) a window is broken ...
... 2. Classify the following changes as physical or chemical: a) food spoils b) an icicle melts c) a nail rusts d) oil is pumped out of a well f) salt dissolves in water g) a window is broken ...
Summary of the Periodic Table of Elements: 1. Elements in the same
... c. Atomic size d. Metallic properties 6. Valence electrons are involved in the chemical combining of elements in the forming of molecules. 7. Elements to the left in the periodic table tend to lose electrons. 8. Elements to the right in the periodic table tend to gain electrons. 9. The amount of ene ...
... c. Atomic size d. Metallic properties 6. Valence electrons are involved in the chemical combining of elements in the forming of molecules. 7. Elements to the left in the periodic table tend to lose electrons. 8. Elements to the right in the periodic table tend to gain electrons. 9. The amount of ene ...
CHM 103 Lecture 6 S07
... where an electron is most likely to be found. • have shapes that represent electron density (not a path the electron follows). ...
... where an electron is most likely to be found. • have shapes that represent electron density (not a path the electron follows). ...
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. ...
Atom Unit Review Questions File
... 5. Isotopes are atoms of the same element that: a) have different numbers of electrons. b) have different numbers of protons. c) have different atomic numbers. d) have different numbers of neutrons. e) have different nuclear charges. ...
... 5. Isotopes are atoms of the same element that: a) have different numbers of electrons. b) have different numbers of protons. c) have different atomic numbers. d) have different numbers of neutrons. e) have different nuclear charges. ...
Interesting and Helpful Websites Early Models of the Atom
... Rutherford (1871 to 1937) Schrodinger (1887 to 1961) ...
... Rutherford (1871 to 1937) Schrodinger (1887 to 1961) ...
Unit 2, Day 25
... is used because the mass of each subatomic particle is too small to measure in grams The mass of each atom is equal to the number of protons plus the number of neutrons. (Electrons are ignored, because their mass is so small that they don’t affect the mass enough) ...
... is used because the mass of each subatomic particle is too small to measure in grams The mass of each atom is equal to the number of protons plus the number of neutrons. (Electrons are ignored, because their mass is so small that they don’t affect the mass enough) ...
Chapter 2:Tutorial Q: (a) What is an isotope? (b) Why are the atomic
... Covalently bonded materials are less dense than metallic or ionically bonded ones because covalent bonds are directional in nature whereas metallic and ionic are not; when bonds are directional, the atoms cannot pack together in as dense a manner, yielding a lower mass ...
... Covalently bonded materials are less dense than metallic or ionically bonded ones because covalent bonds are directional in nature whereas metallic and ionic are not; when bonds are directional, the atoms cannot pack together in as dense a manner, yielding a lower mass ...
The Periodic Table
... • An element is a PURE substance, containing only one kind of ATOM. • The PERIODIC TABLE is a list of all the elements that have been discovered and named, with each element listed in its own element square. • Elements are represented on the Periodic Table by a one or two letter symbol, and its name ...
... • An element is a PURE substance, containing only one kind of ATOM. • The PERIODIC TABLE is a list of all the elements that have been discovered and named, with each element listed in its own element square. • Elements are represented on the Periodic Table by a one or two letter symbol, and its name ...
Beryllium isotopes in geochronology Cosmogenic Be and Be
... fission – the spontaneous (or induced by particle collision) splitting of a heavy nucleus into a pair (only rarely more) of nearly equal fission fragments (fission products) generally with some neutrons. Fission is accompanied by the release of a large quantity of energy. [return] gamma rays (gamma ...
... fission – the spontaneous (or induced by particle collision) splitting of a heavy nucleus into a pair (only rarely more) of nearly equal fission fragments (fission products) generally with some neutrons. Fission is accompanied by the release of a large quantity of energy. [return] gamma rays (gamma ...
Name: Period: _____ Date
... K. Lewis Diagram L. mass number M. metal N. neutron O. noble gas P. nonmetal Q. orbital R. period S. proton T. semiconductor/metalloid U. valence electron ...
... K. Lewis Diagram L. mass number M. metal N. neutron O. noble gas P. nonmetal Q. orbital R. period S. proton T. semiconductor/metalloid U. valence electron ...
State Changes Scavenger Hunt
... Go to the “ChemTime Clock” area to find the answers to these questions. 1. All materials, whether solid, liquid or gas, are made of _______________. Atoms are the smallest _______ of ___________. Scientists have found over _______ different kinds of atoms. The many different materials we encounter a ...
... Go to the “ChemTime Clock” area to find the answers to these questions. 1. All materials, whether solid, liquid or gas, are made of _______________. Atoms are the smallest _______ of ___________. Scientists have found over _______ different kinds of atoms. The many different materials we encounter a ...
electrons.
... The atomic number of an element gives the number of protons in the nucleus The mass number of an element gives the number of protons and neutrons in the nucleus ...
... The atomic number of an element gives the number of protons in the nucleus The mass number of an element gives the number of protons and neutrons in the nucleus ...
Chemistry Honors Unit 2 Study Guide Atomic Theory Mr. Brown Use
... Law of Definite Proportions/Composition = Chemical compounds always contain the same elements in exactly the same proportions by mass regardless of the amount or source of the sample. EX. NaCl always contain 39.34% by mass of Na and 60.66% by mass of Cl. Law of Multiple Proportions = If two or more ...
... Law of Definite Proportions/Composition = Chemical compounds always contain the same elements in exactly the same proportions by mass regardless of the amount or source of the sample. EX. NaCl always contain 39.34% by mass of Na and 60.66% by mass of Cl. Law of Multiple Proportions = If two or more ...
Elements, mixtures and compounds lecture
... A. exists as only one type of atom: it is, therefore a pure substance (This does not often occur in nature); gold necklace? Oxygen is the most common pure element on Earth (occurs as a dioxide: O2 , what does “di” mean?) B. cannot be broken down by chemical reactions: burning/acids/eating (but nucle ...
... A. exists as only one type of atom: it is, therefore a pure substance (This does not often occur in nature); gold necklace? Oxygen is the most common pure element on Earth (occurs as a dioxide: O2 , what does “di” mean?) B. cannot be broken down by chemical reactions: burning/acids/eating (but nucle ...
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 ...
Chapter 4 Worksheet 1
... F. What all things are made of; it occupies space G. An uncharged particle within the nucleus of an atom H. Tiny negative electrical charges that move around the nucleus of an atom I. An atom that has lost or gained electrons ...
... F. What all things are made of; it occupies space G. An uncharged particle within the nucleus of an atom H. Tiny negative electrical charges that move around the nucleus of an atom I. An atom that has lost or gained electrons ...
12.3 The Periodic Table
... Periodic table primer To work through this skill sheet, you will use the periodic table of the elements. The periodic table shows five basic pieces of information. Four are labeled on the graphic at right; the fifth piece of information is the location of the element in the table itself. The locatio ...
... Periodic table primer To work through this skill sheet, you will use the periodic table of the elements. The periodic table shows five basic pieces of information. Four are labeled on the graphic at right; the fifth piece of information is the location of the element in the table itself. The locatio ...
The Scientific Method PAGES 20-25
... 34. When calculating the ATOMIC MASS of an atom, the electrons are generally not included because ___________ __________________________________________________________________________________________. 35. While ALL ATOMS of the same element have the same number of ___________________ in their nucle ...
... 34. When calculating the ATOMIC MASS of an atom, the electrons are generally not included because ___________ __________________________________________________________________________________________. 35. While ALL ATOMS of the same element have the same number of ___________________ in their nucle ...
THE ATOM: THE BASIC BUILDING BLOCK OF MATTER 12
... Various models of how atoms are structured have developed over time. Greeks used the word “atom” which means indivisible. Note the work of Dalton, Thomson, Rutherford, Bohr and Chadwick. Current understanding is that atoms are made up of a positively charged nucleus in the centre surrounded by negat ...
... Various models of how atoms are structured have developed over time. Greeks used the word “atom” which means indivisible. Note the work of Dalton, Thomson, Rutherford, Bohr and Chadwick. Current understanding is that atoms are made up of a positively charged nucleus in the centre surrounded by negat ...