ANSWERS Using Key Terms Understanding Key Ideas
... experiment and found that they could not, would Thomson’s conclusion still have been valid? Explain your answer. ...
... experiment and found that they could not, would Thomson’s conclusion still have been valid? Explain your answer. ...
Chapter 9
... 3. The ____________ of the atom determines the mass of the atom. 4. On the Periodic Table, the vertical columns are called _____________ and the horizontal rows are called _____________. 5. The ____________ number on the periodic table tells you the number of protons. The _______ number indicates th ...
... 3. The ____________ of the atom determines the mass of the atom. 4. On the Periodic Table, the vertical columns are called _____________ and the horizontal rows are called _____________. 5. The ____________ number on the periodic table tells you the number of protons. The _______ number indicates th ...
Chapter 4 Atomic Structure
... small area in the center. He called this a “nucleus” The electrons are distributed around the nucleus, and occupy most of the volume Because of the exceptionally high mass of the nucleus, it must contain particles in addition to protons (neutrons were discovered later) ...
... small area in the center. He called this a “nucleus” The electrons are distributed around the nucleus, and occupy most of the volume Because of the exceptionally high mass of the nucleus, it must contain particles in addition to protons (neutrons were discovered later) ...
Section 1: The Components of Matter Elements, Compounds and
... charged matter, so the speeding α particles should pass through the gold foil with, at most, minor deflections Experiment: α particles emit a flash of light when they pass through the gold atoms and hit a phosphor-coated screen Results: Occasional minor deflections and very infrequent major deflecti ...
... charged matter, so the speeding α particles should pass through the gold foil with, at most, minor deflections Experiment: α particles emit a flash of light when they pass through the gold atoms and hit a phosphor-coated screen Results: Occasional minor deflections and very infrequent major deflecti ...
Unit 10 Test Review
... a. movement of electrons in circular orbits. b. movement of electrons from higher energy states to lower energy states. c. movement of electrons from lower energy states to higher energy states. d. movement of electrons as they fall into the nucleus. 11. How many neutrons are contained in an atom of ...
... a. movement of electrons in circular orbits. b. movement of electrons from higher energy states to lower energy states. c. movement of electrons from lower energy states to higher energy states. d. movement of electrons as they fall into the nucleus. 11. How many neutrons are contained in an atom of ...
Chemistry
... Electrons, protons, and neutrons are parts of the atom and have measurable properties, including mass and, in the case of protons and electrons, charge. The nuclei of atoms are composed of protons and neutrons. A kind of force that is only evident at nuclear distances holds the particles of the nucl ...
... Electrons, protons, and neutrons are parts of the atom and have measurable properties, including mass and, in the case of protons and electrons, charge. The nuclei of atoms are composed of protons and neutrons. A kind of force that is only evident at nuclear distances holds the particles of the nucl ...
Covalent Bonds
... • Atoms of different elements vary in their affinity for electrons • Electronegativity is the measure of an atom’s attraction for electrons that are shared • When covalently bonded atoms have similar electronegativities, the electrons are shared equally. This state is described as nonpolar • If the ...
... • Atoms of different elements vary in their affinity for electrons • Electronegativity is the measure of an atom’s attraction for electrons that are shared • When covalently bonded atoms have similar electronegativities, the electrons are shared equally. This state is described as nonpolar • If the ...
Chemistry Standards Checklist
... ionization energy, and electronegativity of various elements. b. Compare and contrast trends in the chemical and physical properties of elements and their placement on the Periodic Table. SC5. Students will understand that the rate at which a chemical reaction occurs can be affected by changing co ...
... ionization energy, and electronegativity of various elements. b. Compare and contrast trends in the chemical and physical properties of elements and their placement on the Periodic Table. SC5. Students will understand that the rate at which a chemical reaction occurs can be affected by changing co ...
1. Atoms and Bonding
... Number of bonds? Use “HONC-1234” Quite strong… takes a lot of energy to break them! – But you CAN, because we burn fat, recycle materials… plants break bonds in CO2 and H20 to rework them into complex sugars ...
... Number of bonds? Use “HONC-1234” Quite strong… takes a lot of energy to break them! – But you CAN, because we burn fat, recycle materials… plants break bonds in CO2 and H20 to rework them into complex sugars ...
Atomic Timeline notes
... centre of an Atom was positively charged and called it the Nucleus • The negative charges (electrons) exist around the nucleus in a much larger space • He also proposed the idea of a Neutron when he noticed the weights of the atom of gold did not equal its 79 protons and 79 electrons. There was miss ...
... centre of an Atom was positively charged and called it the Nucleus • The negative charges (electrons) exist around the nucleus in a much larger space • He also proposed the idea of a Neutron when he noticed the weights of the atom of gold did not equal its 79 protons and 79 electrons. There was miss ...
Document
... 1. What is the smallest particle something can be divided into? 2. How is an element different from a compound? 3. What does the Atomic Number tell you? 4. What does the Atomic Mass tell you? 5. What are the 3 parts of an atom? ...
... 1. What is the smallest particle something can be divided into? 2. How is an element different from a compound? 3. What does the Atomic Number tell you? 4. What does the Atomic Mass tell you? 5. What are the 3 parts of an atom? ...
Intro to Chemistry
... When an atom gains an extra electron, it acquires a net negative charge—It becomes a negative ion When an atom loses an electron, it acquires a net positive charge-it becomes a positive ion When a positively charged ion attracts a negatively charged ion, the two associate closely with one another-- ...
... When an atom gains an extra electron, it acquires a net negative charge—It becomes a negative ion When an atom loses an electron, it acquires a net positive charge-it becomes a positive ion When a positively charged ion attracts a negatively charged ion, the two associate closely with one another-- ...
File - Mrs. Wernau`s Pre
... 2. Atoms of the same element are alike…same size, mass, and other properties. 3. Atoms are not subdivided, created, or destroyed. 4. Atoms of different elements combine in simple whole-number ratios to form chemical compounds. 5. In chemical reactions, atoms are combined, separated, or rearranged. T ...
... 2. Atoms of the same element are alike…same size, mass, and other properties. 3. Atoms are not subdivided, created, or destroyed. 4. Atoms of different elements combine in simple whole-number ratios to form chemical compounds. 5. In chemical reactions, atoms are combined, separated, or rearranged. T ...
09/09/03 lecture
... • Different elements have different numbers of protons in their atoms. • Atomic number: number of protons in the atom; different elements have different atomic numbers. • A neutral atom (i.e., one with no net charge) will have the same number of electrons as protons). • Most chemical properties are ...
... • Different elements have different numbers of protons in their atoms. • Atomic number: number of protons in the atom; different elements have different atomic numbers. • A neutral atom (i.e., one with no net charge) will have the same number of electrons as protons). • Most chemical properties are ...
Overview Atomic Structure
... Also rather wrong. It’s not that simple. The electrons don’t spend their time a specific distance from the nucleus. ...
... Also rather wrong. It’s not that simple. The electrons don’t spend their time a specific distance from the nucleus. ...
Atomic Theory
... Atom’s contain electrons. The electrons have a negative charge and a very small mass. The rest of the atom has a positive charge. The electrons are embedded randomly into the positive parts of the atom. Electrons can be removed from, or added to, atoms to create a charged atom. ...
... Atom’s contain electrons. The electrons have a negative charge and a very small mass. The rest of the atom has a positive charge. The electrons are embedded randomly into the positive parts of the atom. Electrons can be removed from, or added to, atoms to create a charged atom. ...
CHAPTER 2 The Chemical Context of Life Elements and
... Element = collection of one type of atom Compound = two or more different elements combined in fixed ratio 2. Identify the four elements that make up 96% of living matter. Oxygen, carbon, hydrogen, nitrogen 3. Define the term trace element and give an example. Elements required by an organism in onl ...
... Element = collection of one type of atom Compound = two or more different elements combined in fixed ratio 2. Identify the four elements that make up 96% of living matter. Oxygen, carbon, hydrogen, nitrogen 3. Define the term trace element and give an example. Elements required by an organism in onl ...
04 Atom-Review-Worksheet
... 5. Given the relative abundance of the following naturally occurring isotopes of oxygen, calculate the average atomic mass of oxygen. Assume that the atomic mass of each is the same as the mass number. oxygen- 16: 99.76% oxygen17: 0.037% oxygen-18: 0.204% ...
... 5. Given the relative abundance of the following naturally occurring isotopes of oxygen, calculate the average atomic mass of oxygen. Assume that the atomic mass of each is the same as the mass number. oxygen- 16: 99.76% oxygen17: 0.037% oxygen-18: 0.204% ...
Atomic Structure Notes
... spin on the electron as either clockwise or counterclockwise. The Pauli exclusion principle states that no two electron in an atom can have the same set of four quantum numbers. Therefore, if two electrons occupy the same orbital, they must have opposite spins. These are normally designated + ½ or – ...
... spin on the electron as either clockwise or counterclockwise. The Pauli exclusion principle states that no two electron in an atom can have the same set of four quantum numbers. Therefore, if two electrons occupy the same orbital, they must have opposite spins. These are normally designated + ½ or – ...