Chapter6
... For positive ions, charge numbers increase as more electrons are lost from the atom. The electrostatic force is greater for smaller numbers of electrons which decreases the ionic radius. For negative ions, as the charge number increases, so does the number of electrons. Electrostatic forces decrease ...
... For positive ions, charge numbers increase as more electrons are lost from the atom. The electrostatic force is greater for smaller numbers of electrons which decreases the ionic radius. For negative ions, as the charge number increases, so does the number of electrons. Electrostatic forces decrease ...
Lab 1-1 - My eCoach
... questions below using complete sentences. Questions 1. Sodium hydrogen carbonate is baking soda (NaHCO3). When HCl is added to NaHCO3, carbon dioxide bubbles are formed. What is the chemical formula for carbon dioxide? In what consumer product is the gas commonly found? 2. Which of the other mixings ...
... questions below using complete sentences. Questions 1. Sodium hydrogen carbonate is baking soda (NaHCO3). When HCl is added to NaHCO3, carbon dioxide bubbles are formed. What is the chemical formula for carbon dioxide? In what consumer product is the gas commonly found? 2. Which of the other mixings ...
Homework Exercises
... Name substance X Write a balanced equation for the reaction What is meant by an excess of one chemical in a chemical reaction? When the reaction is finished, unreacted copper(II) carbonate would be left in the beaker. What else would be observed indicating that the reaction is over? (e) Draw a label ...
... Name substance X Write a balanced equation for the reaction What is meant by an excess of one chemical in a chemical reaction? When the reaction is finished, unreacted copper(II) carbonate would be left in the beaker. What else would be observed indicating that the reaction is over? (e) Draw a label ...
HIGHER TIER CHEMISTRY MINI-MOCK UNIT 2
... The rate at which this reaction takes place can be studied by measuring the amount of carbon dioxide gas produced. The graph below shows the results of four experiments, 1 to 4. In each experiment the amount of calcium carbonate, the volume of acid and the concentration of the acid were kept the sam ...
... The rate at which this reaction takes place can be studied by measuring the amount of carbon dioxide gas produced. The graph below shows the results of four experiments, 1 to 4. In each experiment the amount of calcium carbonate, the volume of acid and the concentration of the acid were kept the sam ...
Print out Reviews # 1 through # 17
... 6. Round off each of the following measurements to 3 significant figures. (A) 98.473 L (B) 12.17 oC (C) 0.00076321 kg (D) 7.485 x 104 mm (E) 57.048 m (F) 1764.9 mL 7. Distinguish between accuracy and precision of a measurement. 8. A technician experimentally determined the boiling point of octane as ...
... 6. Round off each of the following measurements to 3 significant figures. (A) 98.473 L (B) 12.17 oC (C) 0.00076321 kg (D) 7.485 x 104 mm (E) 57.048 m (F) 1764.9 mL 7. Distinguish between accuracy and precision of a measurement. 8. A technician experimentally determined the boiling point of octane as ...
Unit 3 Review - RHSChemistry
... states of matter (s, l, g) f. React readily with ________, metals especially alkali, to produce salts. (halogen = salt former) ...
... states of matter (s, l, g) f. React readily with ________, metals especially alkali, to produce salts. (halogen = salt former) ...
Science Review Sheet: Periodic Table Test Name: ______ Study
... Study periodic table notes. Know the properties of Alkali Metals, Alkaline Earth Metals, Halides/Halogens and Noble Gases. Know how to calculate atomic mass, # of protons, # of electrons, and #of neutrons in an atom. 1. What are the three subatomic particles? Where are they found within an atom? Wha ...
... Study periodic table notes. Know the properties of Alkali Metals, Alkaline Earth Metals, Halides/Halogens and Noble Gases. Know how to calculate atomic mass, # of protons, # of electrons, and #of neutrons in an atom. 1. What are the three subatomic particles? Where are they found within an atom? Wha ...
Atoms and Elements: Are they Related?
... • What are the most commonly occurring elements in the food labels? • What items seemed to have the most amount of elements in them? • Can you predict what that means about the food item? • Why do you think the baby formula has such a variety of elements? • Can you predict what the other items on th ...
... • What are the most commonly occurring elements in the food labels? • What items seemed to have the most amount of elements in them? • Can you predict what that means about the food item? • Why do you think the baby formula has such a variety of elements? • Can you predict what the other items on th ...
Science 1206 Unit 3 Part 1
... Hydrates use the same prefixes as molecular compounds to indicate how many water molecules are associated with compound. To tell whether or not you have a hydrate or not, you look for the word hydrate. ...
... Hydrates use the same prefixes as molecular compounds to indicate how many water molecules are associated with compound. To tell whether or not you have a hydrate or not, you look for the word hydrate. ...
Groups 2 and 7
... Electronegativity of the halogens decreases down the group due to an increase in atomic radius. Increased nuclear charge has no significant effect because there are more electron shells and more shielding. Iodine atoms therefore attract electron density in a covalent bond less strongly than fluorine ...
... Electronegativity of the halogens decreases down the group due to an increase in atomic radius. Increased nuclear charge has no significant effect because there are more electron shells and more shielding. Iodine atoms therefore attract electron density in a covalent bond less strongly than fluorine ...
Periodic Table ppt
... explosives. It is also useful to create an oxygen-free atmosphere to prevent oxidation or combustion. A common use for liquid nitrogen today is the rapid freezing of food products. We also use liquid nitrogen in medical/surgical applications such as cryotherapy and cryosurgery. Phosphorus is used in ...
... explosives. It is also useful to create an oxygen-free atmosphere to prevent oxidation or combustion. A common use for liquid nitrogen today is the rapid freezing of food products. We also use liquid nitrogen in medical/surgical applications such as cryotherapy and cryosurgery. Phosphorus is used in ...
Chemistry of the Non
... SO2 in water produces sulfurous acid, H2SO3, a weak diprotic acid. SO2 is toxic to fungi and is used to sterilize dried fruit and wine. • Na2SO3 and NaHSO3 are used as preservatives. • Many people are allergic to these agents and must avoid foods treated with them. When sulfur burns in air both SO2 ...
... SO2 in water produces sulfurous acid, H2SO3, a weak diprotic acid. SO2 is toxic to fungi and is used to sterilize dried fruit and wine. • Na2SO3 and NaHSO3 are used as preservatives. • Many people are allergic to these agents and must avoid foods treated with them. When sulfur burns in air both SO2 ...
Pre-class Activity 12/18
... For positive ions, charge numbers increase as more electrons are lost from the atom. The electrostatic force is greater for smaller numbers of electrons which decreases the ionic radius. For negative ions, as the charge number increases, so does the number of electrons. Electrostatic forces decrease ...
... For positive ions, charge numbers increase as more electrons are lost from the atom. The electrostatic force is greater for smaller numbers of electrons which decreases the ionic radius. For negative ions, as the charge number increases, so does the number of electrons. Electrostatic forces decrease ...
the nakuru district sec. schools trial examinations - 2015
... 14 Red-hot iron reacts with steam to give tri-iron tetroxide and hydrogen gas. The reaction is reversible 3Fe(s) + 4H2O(s) Fe304(s) + 4H2(g) (a) Define dynamic equilibrium (1 mark) Although the reaction appears to have stopped by attaining a state of balance, both forward and backward reactions ar ...
... 14 Red-hot iron reacts with steam to give tri-iron tetroxide and hydrogen gas. The reaction is reversible 3Fe(s) + 4H2O(s) Fe304(s) + 4H2(g) (a) Define dynamic equilibrium (1 mark) Although the reaction appears to have stopped by attaining a state of balance, both forward and backward reactions ar ...
HonorsCh6PracticeTest14
... 18. The subatomic particle that plays the greatest role in determining the physical and chemical properties of an element is the a. proton. c. electron. b. neutron. d. photon. 19. Atomic size generally a. increases from left to right across a period. b. decreases from top to bottom within a group. c ...
... 18. The subatomic particle that plays the greatest role in determining the physical and chemical properties of an element is the a. proton. c. electron. b. neutron. d. photon. 19. Atomic size generally a. increases from left to right across a period. b. decreases from top to bottom within a group. c ...
Chapter 11 Chemical Reactions
... arrow (→) separates the reactants from the products (arrow points to products) –Read as: “reacts to form” or yields The plus sign = “and” (s) after the formula = solid: Fe(s) (g) after the formula = gas: CO2(g) (l) after the formula = liquid: H2O(l) ...
... arrow (→) separates the reactants from the products (arrow points to products) –Read as: “reacts to form” or yields The plus sign = “and” (s) after the formula = solid: Fe(s) (g) after the formula = gas: CO2(g) (l) after the formula = liquid: H2O(l) ...
Chemical Reactions
... 1) Assemble the correct formulas for all the reactants and products, using “+” and “→” 2) Count the number of atoms of each type appearing on both sides 3) Balance the elements one at a time by adding coefficients (the numbers in front) where you need more - save balancing the H and O until LAST! ...
... 1) Assemble the correct formulas for all the reactants and products, using “+” and “→” 2) Count the number of atoms of each type appearing on both sides 3) Balance the elements one at a time by adding coefficients (the numbers in front) where you need more - save balancing the H and O until LAST! ...
Predicting Products online assistance #3
... compound AB + compound CD compound AD + compound CB FeS + 2HCl FeCl2 + H2S A decomposition reaction occurs when energy in the form of heat, light, electricity, or mechanical shock is supplied. A compound may decompose to form simpler compounds and/or elements. The general form of a decomposition ...
... compound AB + compound CD compound AD + compound CB FeS + 2HCl FeCl2 + H2S A decomposition reaction occurs when energy in the form of heat, light, electricity, or mechanical shock is supplied. A compound may decompose to form simpler compounds and/or elements. The general form of a decomposition ...
Study Sheet for Unit Test
... 7. Know the main types of elements in the periodic table (metals, semimetals, non-metals, inert gases)? Where are they generally located on the table? What are some of the properties of each? 8. What is the reactivity of the groups in the periodic table? Which ones are most reactive? Which group rar ...
... 7. Know the main types of elements in the periodic table (metals, semimetals, non-metals, inert gases)? Where are they generally located on the table? What are some of the properties of each? 8. What is the reactivity of the groups in the periodic table? Which ones are most reactive? Which group rar ...
Chapter 5: Atomic Structure and The Periodic Table
... periodic table. Be familiar with the difference between his arrangement and the current arrangement. ...
... periodic table. Be familiar with the difference between his arrangement and the current arrangement. ...
Chemistry: Chemical Reactions Notes STOP
... negative ions end in –ide (Cl1-‐ is chloride). The exception to this rule is polyatomic ions. You need to use the charge sheet to get the names. 2. Write the chemical formulas for the reacta ...
... negative ions end in –ide (Cl1-‐ is chloride). The exception to this rule is polyatomic ions. You need to use the charge sheet to get the names. 2. Write the chemical formulas for the reacta ...