Higher Chemistry Learning Outcomes
... (i) Patterns in the Periodic Table. The modern Periodic Table is based on the work of Mendeleev who arranged the known elements in order of increasing atomic masses in conjunction with similar chemical properties, leaving gaps for undiscovered elements. There are variations in the densities, mel ...
... (i) Patterns in the Periodic Table. The modern Periodic Table is based on the work of Mendeleev who arranged the known elements in order of increasing atomic masses in conjunction with similar chemical properties, leaving gaps for undiscovered elements. There are variations in the densities, mel ...
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... bonds each element forms. b In the explanation, students describe the causal relationship between the observable macroscopic patterns of reactivity of elements in the periodic table and the patterns of outermost electrons for each atom and its relative electronegativity. Revising the explanation a G ...
... bonds each element forms. b In the explanation, students describe the causal relationship between the observable macroscopic patterns of reactivity of elements in the periodic table and the patterns of outermost electrons for each atom and its relative electronegativity. Revising the explanation a G ...
Stoichiometry, Lab Basics, Reactions
... ____ 20. A 1.0 L sample of an aqueous solution contains 0.10 mol of NaCl and 0.10 mol of CaCl2. What is the minimum number of moles of AgNO3 that must be added to the solution in order to precipitate all of the Cl- as AgCl (s)? (Assume all AgCl is insoluble.) A) 0.10 mol B) 0.20 mol C) 0.30 mol D) 0 ...
... ____ 20. A 1.0 L sample of an aqueous solution contains 0.10 mol of NaCl and 0.10 mol of CaCl2. What is the minimum number of moles of AgNO3 that must be added to the solution in order to precipitate all of the Cl- as AgCl (s)? (Assume all AgCl is insoluble.) A) 0.10 mol B) 0.20 mol C) 0.30 mol D) 0 ...
Chapter 4
... An electrolyte is a substance that, when dissolved in water, results in a solution that can conduct electricity. A nonelectrolyte is a substance that, when dissolved, results in a solution that does not conduct electricity. ...
... An electrolyte is a substance that, when dissolved in water, results in a solution that can conduct electricity. A nonelectrolyte is a substance that, when dissolved, results in a solution that does not conduct electricity. ...
7.2 Balancing Equations
... How Can Chemical Reactions Be Described? Suppose you watched a beautiful sunset. How would you describe it to someone else? You could write a description, take a photograph, or even draw a picture. There is more than one way to describe what you saw. You can also describe chemical reactions in more ...
... How Can Chemical Reactions Be Described? Suppose you watched a beautiful sunset. How would you describe it to someone else? You could write a description, take a photograph, or even draw a picture. There is more than one way to describe what you saw. You can also describe chemical reactions in more ...
Matter and Measurement
... are present in solution but do not participate directly in the chemical reaction. They “provide” the Ag+ and Cl- ions which reacted, but they themselves do not directly participate in the chemical reaction. Hence, the complete ionic equation can be re-written to show only those species which are dir ...
... are present in solution but do not participate directly in the chemical reaction. They “provide” the Ag+ and Cl- ions which reacted, but they themselves do not directly participate in the chemical reaction. Hence, the complete ionic equation can be re-written to show only those species which are dir ...
The masses of reactants and products are equal.
... A balanced chemical equation shows that no matter how atoms are rearranged during a chemical reaction, the same number of atoms must be present before and after the reaction. The following example demonstrates the usefulness of chemical equations and the conservation of mass. The decomposition of so ...
... A balanced chemical equation shows that no matter how atoms are rearranged during a chemical reaction, the same number of atoms must be present before and after the reaction. The following example demonstrates the usefulness of chemical equations and the conservation of mass. The decomposition of so ...
CHAP 1 - NCERT books
... arrow placed between them. The reactants are written on the left-hand side (LHS) with a plus sign (+) between them. Similarly, products are written on the right-hand side (RHS) with a plus sign (+) between them. The arrowhead points towards the products, and shows the direction of the reaction. ...
... arrow placed between them. The reactants are written on the left-hand side (LHS) with a plus sign (+) between them. Similarly, products are written on the right-hand side (RHS) with a plus sign (+) between them. The arrowhead points towards the products, and shows the direction of the reaction. ...
AS 2, Organic, Physical and Inorganic Chemistry
... The total mark for this paper is 100. Quality of written communication will be assessed in Question 15(c). In Section A all questions carry equal marks, i.e. two marks for each question. In Section B the figures in brackets printed down the right-hand side of pages indicate the marks awarded to each ...
... The total mark for this paper is 100. Quality of written communication will be assessed in Question 15(c). In Section A all questions carry equal marks, i.e. two marks for each question. In Section B the figures in brackets printed down the right-hand side of pages indicate the marks awarded to each ...
Sample pages 2 PDF
... Chemical kinetics is the branch of chemistry that measures rates of chemical reactions, studies the factors that influence them, designs and prepares new catalysts, and interprets the results at the molecular level. The independent variable of chemical kinetics, from the chemical reaction starting m ...
... Chemical kinetics is the branch of chemistry that measures rates of chemical reactions, studies the factors that influence them, designs and prepares new catalysts, and interprets the results at the molecular level. The independent variable of chemical kinetics, from the chemical reaction starting m ...
2C - Edexcel
... (b) The equation for the reaction between hydrogen and chlorine is H2 + Cl2 o 2HCl Different names are used for the product, depending on its state symbol. (i) What are the names used for HCl(g) and HCl(aq)? ...
... (b) The equation for the reaction between hydrogen and chlorine is H2 + Cl2 o 2HCl Different names are used for the product, depending on its state symbol. (i) What are the names used for HCl(g) and HCl(aq)? ...
New Title
... 4. The substances you have at the beginning of a chemical reaction are called the 5. The substances you have when a chemical reaction is complete are called the 6. What do you read the arrow in a chemical equation as meaning? 7. Label each formula in the chemical equation below as either a reactant ...
... 4. The substances you have at the beginning of a chemical reaction are called the 5. The substances you have when a chemical reaction is complete are called the 6. What do you read the arrow in a chemical equation as meaning? 7. Label each formula in the chemical equation below as either a reactant ...
Chemical equilibrium
In a chemical reaction, chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time. Usually, this state results when the forward reaction proceeds at the same rate as the reverse reaction. The reaction rates of the forward and backward reactions are generally not zero, but equal. Thus, there are no net changes in the concentrations of the reactant(s) and product(s). Such a state is known as dynamic equilibrium.