hc1(5)notes
... • Explain the relationship between electrons in sublevels and the length of each period of the periodic table. • Locate and name the four blocks of the periodic table. Explain the reasons for these names. • Discuss the relationship between group configurations and group numbers. • Describe the locat ...
... • Explain the relationship between electrons in sublevels and the length of each period of the periodic table. • Locate and name the four blocks of the periodic table. Explain the reasons for these names. • Discuss the relationship between group configurations and group numbers. • Describe the locat ...
THE PERIODIC TABLE Introduction • Dmitri Mendeleev is the father
... • Some metalloids such as silicon, germanium (Ge), and arsenic (As) are semiconductors. • Metalloids have some chemical and physical properties of metals and other properties of nonmetals. 3. Atomic Radius • Atomic radius is the distance between the nucleus and the outermost electron. It affects the ...
... • Some metalloids such as silicon, germanium (Ge), and arsenic (As) are semiconductors. • Metalloids have some chemical and physical properties of metals and other properties of nonmetals. 3. Atomic Radius • Atomic radius is the distance between the nucleus and the outermost electron. It affects the ...
Periodic Table
... This group is called the Alkali metals Alkali metals are very active metals For example: Pure sodium added to water creates a huge explosion. Alkali metals are soft and can be cut with a knife When they undergo chemical reactions, they tend to lose 1 electron and produce a (+1) charge ...
... This group is called the Alkali metals Alkali metals are very active metals For example: Pure sodium added to water creates a huge explosion. Alkali metals are soft and can be cut with a knife When they undergo chemical reactions, they tend to lose 1 electron and produce a (+1) charge ...
The Periodic Table
... • These elements have very low melting and boiling temperatures and all are gases at room temperature. • Their lack of reactivity is due to the electron configuration. Each noble gas has an outer shell that is considered ‘full’ or stable. • As such they do not want to react with other elements and u ...
... • These elements have very low melting and boiling temperatures and all are gases at room temperature. • Their lack of reactivity is due to the electron configuration. Each noble gas has an outer shell that is considered ‘full’ or stable. • As such they do not want to react with other elements and u ...
20 Questions
... a) How many neutrons are in an atom of Urnium-235? b) How many protons must is lose to become lead? ...
... a) How many neutrons are in an atom of Urnium-235? b) How many protons must is lose to become lead? ...
Chapter 3
... Sulfur dioxide reacts with chlorine to produce thionyl chloride (used as a drying agent for inorganic halides) and dichlorine monoxide (used as a bleach for wood, pulp and textiles). SO2(g) + 2Cl2(g) → SOCl2(g) + Cl2O(g) If 0.400 mol of Cl2 reacts with excess SO2, how many moles of Cl2O are formed? ...
... Sulfur dioxide reacts with chlorine to produce thionyl chloride (used as a drying agent for inorganic halides) and dichlorine monoxide (used as a bleach for wood, pulp and textiles). SO2(g) + 2Cl2(g) → SOCl2(g) + Cl2O(g) If 0.400 mol of Cl2 reacts with excess SO2, how many moles of Cl2O are formed? ...
Chemistry 4.1 Atomic structure and the periodic table NEED TO
... The elements in Group 0 of the periodic table are called the noble gases. They are unreactive and do not easily form molecules because their atoms have stable arrangements of electrons. The noble gases have eight electrons in their outer energy level, except for helium, which has only two electrons. ...
... The elements in Group 0 of the periodic table are called the noble gases. They are unreactive and do not easily form molecules because their atoms have stable arrangements of electrons. The noble gases have eight electrons in their outer energy level, except for helium, which has only two electrons. ...
Periodic Table
... gases were previously referred to as inert gases, but this term is not strictly accurate now that some have been shown to take part in chemical reactions. Because of their unreactivity, the noble gases were not discovered until the existence of helium was hypothetically deduced from a spectrographic ...
... gases were previously referred to as inert gases, but this term is not strictly accurate now that some have been shown to take part in chemical reactions. Because of their unreactivity, the noble gases were not discovered until the existence of helium was hypothetically deduced from a spectrographic ...
File u1 sec2.2 slide show
... They are grouped together because of the arrangement of their electrons (more on this later in the chapter…) ...
... They are grouped together because of the arrangement of their electrons (more on this later in the chapter…) ...
The Periodic Table
... • They have the same number of valence electrons. • They will form the same kinds of ions. • They increase in size from smallest at top to largest at bottom. ...
... • They have the same number of valence electrons. • They will form the same kinds of ions. • They increase in size from smallest at top to largest at bottom. ...
Episode 7 - The Periodic Table
... 2. What are some examples of physical properties? 3. How many elements are on the modern periodic table? _____ How many of these can be found in nature? ______ 4. Why do the symbols for some elements (such as iron) seem to have no relationship to their name? 5. What is meant by the atomic and mass n ...
... 2. What are some examples of physical properties? 3. How many elements are on the modern periodic table? _____ How many of these can be found in nature? ______ 4. Why do the symbols for some elements (such as iron) seem to have no relationship to their name? 5. What is meant by the atomic and mass n ...
The Periodic Table - Teach-n-Learn-Chem
... 2. What are some examples of physical properties? 3. How many elements are on the modern periodic table? _____ How many of these can be found in nature? ______ 4. Why do the symbols for some elements (such as iron) seem to have no relationship to their name? 5. What is meant by the atomic and mass n ...
... 2. What are some examples of physical properties? 3. How many elements are on the modern periodic table? _____ How many of these can be found in nature? ______ 4. Why do the symbols for some elements (such as iron) seem to have no relationship to their name? 5. What is meant by the atomic and mass n ...
379 - FTP
... Hydrogen sulfide occurs in natural gas. It also is found in many sewer gases. It is a by-product of many industrial processes. Trace amounts of dissolved H2S are found in wastewaters in equilibrium with dissolved sulfides and hydrosulfides. It also is found in volcanic eruptions, hot springs and in ...
... Hydrogen sulfide occurs in natural gas. It also is found in many sewer gases. It is a by-product of many industrial processes. Trace amounts of dissolved H2S are found in wastewaters in equilibrium with dissolved sulfides and hydrosulfides. It also is found in volcanic eruptions, hot springs and in ...
UN1001: Section 11: Hydrogen Effects
... up hydrogen (or deuterium in heavy water ) by general corrosion. The hydrogen (D) migrates through the metal lattice to cool regions and to regions of high tensile stress - can precipitate as a separate phase - zirconium hydride. These hydrides are themselves brittle, and crack, and the crack can pr ...
... up hydrogen (or deuterium in heavy water ) by general corrosion. The hydrogen (D) migrates through the metal lattice to cool regions and to regions of high tensile stress - can precipitate as a separate phase - zirconium hydride. These hydrides are themselves brittle, and crack, and the crack can pr ...
(halogens group) 4-write down the electronic configuration
... 4-The density of pure water in solid state is………... a-less than its density in liquid state b- equal to its density in liquid state c- equal to its density in gaseous state d- greater than its density in liquid state 5-The density of pure water in solid state is ……… liquid state a-less than b- equal ...
... 4-The density of pure water in solid state is………... a-less than its density in liquid state b- equal to its density in liquid state c- equal to its density in gaseous state d- greater than its density in liquid state 5-The density of pure water in solid state is ……… liquid state a-less than b- equal ...
2 H2(g)
... 8. What`s the number of moles of hydrogen chloride prepared from 7.09 g of chlorine. 9. Calculate the number of moles of water needed to make 20 g of glucose during photosynthesis. 10. Calculate what mass of calcium hydroxide reacts with 0.257 moles of hydrogen chloride. 11. Calculate the number of ...
... 8. What`s the number of moles of hydrogen chloride prepared from 7.09 g of chlorine. 9. Calculate the number of moles of water needed to make 20 g of glucose during photosynthesis. 10. Calculate what mass of calcium hydroxide reacts with 0.257 moles of hydrogen chloride. 11. Calculate the number of ...
Periodic Properties
... • Some groups have special names: – 1A (Alkali Metals) – 2A (Alkaline Earth Metals) – 7A (Halogens) – 8A I (Noble Gases) • The letters A and B in the group ...
... • Some groups have special names: – 1A (Alkali Metals) – 2A (Alkaline Earth Metals) – 7A (Halogens) – 8A I (Noble Gases) • The letters A and B in the group ...
The Periodic Table
... Group 18: The Noble Gases (The Inert Gases) Nonreactive Colorless gases Nonmetal Charge is 0: 2 or 8 valence electrons- have a full outer energy level ...
... Group 18: The Noble Gases (The Inert Gases) Nonreactive Colorless gases Nonmetal Charge is 0: 2 or 8 valence electrons- have a full outer energy level ...
UNIT 2 ATOMS, MATTER, AND THE MOLE
... compounds with different proportions of the same elements. 1. EX: water and hydrogen peroxide both contain hydrogen and oxygen in definite composition, but in a different proportion to each other. 2. Methane (CH4) and butane (C4H10) are also good examples. 3. What are two compounds that contain carb ...
... compounds with different proportions of the same elements. 1. EX: water and hydrogen peroxide both contain hydrogen and oxygen in definite composition, but in a different proportion to each other. 2. Methane (CH4) and butane (C4H10) are also good examples. 3. What are two compounds that contain carb ...
IB:Enthalpy Review Questions
... 3. When 8.0 g of ammonium nitrate was dissolved in 100 cm3 of water the temperature fell from 19.0
... 3. When 8.0 g of ammonium nitrate was dissolved in 100 cm3 of water the temperature fell from 19.0
Atomic Radius reading assignment
... Periodic Trends: Atomic Radius (from Chemistry: Connections to Our Changing World, pp. 174-175, Prentice-Hall, 1996) As you have learned, many of an element’s properties are determined by its electron configuration. In addition, the periodic table is organized so that elements with similar electron ...
... Periodic Trends: Atomic Radius (from Chemistry: Connections to Our Changing World, pp. 174-175, Prentice-Hall, 1996) As you have learned, many of an element’s properties are determined by its electron configuration. In addition, the periodic table is organized so that elements with similar electron ...
Dr David`s Chemistry Revision Themes
... A 100 cm3 of tetrachloromethane is added to the above mixture. After shaking and allowing to settle, two liquid layers form. Describe and explain the result. Tetrachloromethane is immiscible with water and forms a bottom layer since it is denser than water. It also preferentially dissolves the iodin ...
... A 100 cm3 of tetrachloromethane is added to the above mixture. After shaking and allowing to settle, two liquid layers form. Describe and explain the result. Tetrachloromethane is immiscible with water and forms a bottom layer since it is denser than water. It also preferentially dissolves the iodin ...