This document discusses the five main types of chemical reactions: combination, decomposition, single-replacement, double-replacement, and combustion. It provides examples of each type of reaction and how to identify them based on the reactants and products. It also contains practice problems to test the reader's understanding of classifying reaction types and predicting products.
8th Grade Integrated Science Chapter 9 Lesson 2 on Types of Chemical Reactions. This chapter explains five different types of reactions: synthesis, decomposition, single replacement, double replacement, and combustion.
objective
theory of atom
dalton`theory
Thomson, s model of atom
atomic number and mass number
isotopes, molecules formula, empirical formula
ions, formula of ionic compound, polyatomic ions, chemical nomenclature
8th Grade Integrated Science Chapter 9 Lesson 2 on Types of Chemical Reactions. This chapter explains five different types of reactions: synthesis, decomposition, single replacement, double replacement, and combustion.
objective
theory of atom
dalton`theory
Thomson, s model of atom
atomic number and mass number
isotopes, molecules formula, empirical formula
ions, formula of ionic compound, polyatomic ions, chemical nomenclature
The Aufbau Principle requires that the electrons occupy the lowest possible energy level before filling up the next.
Pauli’s Exclusion Principle posits that no two electrons can have the same set of four quantum number; the spin quantum number limits the number of electrons in an orbital to a maximum of two.
Hund’s Rule requires that the electrons fill the orbitals in a subshell one by one, before pairing the electrons in an orbital spin in opposite directions.
The Aufbau Principle requires that the electrons occupy the lowest possible energy level before filling up the next.
Pauli’s Exclusion Principle posits that no two electrons can have the same set of four quantum number; the spin quantum number limits the number of electrons in an orbital to a maximum of two.
Hund’s Rule requires that the electrons fill the orbitals in a subshell one by one, before pairing the electrons in an orbital spin in opposite directions.
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June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
2. The heat and smoke of
burning charcoal are the
products of a combustion
reaction. Combustion is one
of the five general types of
chemical reactions. If you
can recognize a reaction as
being a particular type, you
may be able to predict the
products of the reaction.
3. The five general types of reaction are
combination, decomposition, single-
replacement, double-replacement, and
combustion.
4. In a combination reaction two or
more substances combine
to form ONE new
substance.
5.
6. In a decomposition reaction a
single compound breaks down into
two or more simpler products.
19. In a combustion reaction an
element or a compound reacts with
oxygen, often producing energy in
the form of heat and light.
20. The products of a combustion
reaction are usually CO2 and H2O
21.
22. The elements and/or compounds
reacting are good indicators of the
reaction type which can help you
predict the reaction’s products.
2reactants1 product combination
1reactant 2 products decomposition
ionic + element single replacement
Two ionic reactants double replacement
__ + O2 CO2 + H2O combustion
23.
24.
25.
26.
27.
28. 1. What type of reaction is described by
the following equation?
6Li + N2 → 2Li3N
a) combination reaction
b) decomposition reaction
c) single-replacement reaction
d) combustion reaction
29. 2. Balance the following equation and
indicate whether it represents a
combustion, combination, or
decomposition reaction.
H2SO4 → H2O2 + SO2
a. H2SO4 → H2O2 + SO2, combination
b. H2SO4 → H2O2 + SO2, decomposition
c. H2SO4 → 2H2O2 + SO2, combination
d. H SO → 2H O + SO , decomposition
30. 3. Predict the missing product in the
following unbalanced equation.
Pb(NO3)2 + KOH → KNO3 + ____________
a. PbOH2
b. Pb(OH)4
c. Pb(OH)2
d. PbOH
Editor's Notes
When ignited, magnesium ribbon reacts with oxygen in the surrounding air to form magnesium oxide, a white solid. This is a combination reaction. Observing Why do you think this reaction was once used in flashbulbs for photography?
When orange-colored mercury(II) oxide is heated, it decomposes into its constituent elements: liquid mercury and gaseous oxygen. Comparing and Contrasting How are the two reactions pictured so far similar? How are they different?
The alkali metal potassium displaces hydrogen from water and forms a solution of potassium hydroxide in a single-replacement reaction. The heat of the reaction is often sufficient to ignite the hydrogen. Inferring Why are alkali metals stored under mineral oil or kerosene?
Aqueous solutions of potassium carbonate and barium chloride react in a double-replacement reaction to form the white precipitate barium carbonate. Potassium chloride, the other product of the reaction, remains in solution.
Methane gas reacts with oxygen from the surrounding air in a combustion reaction to produce carbon dioxide and water. Inferring What else is produced in this reaction?
The five types of chemical reactions discussed in this chapter are summarized here.
The five types of chemical reactions discussed in this chapter are summarized here.
The five types of chemical reactions discussed in this chapter are summarized here.
The five types of chemical reactions discussed in this chapter are summarized here.
