Match the following chemical reactions:synthesis, reversible, exchange, decomposition
1. molecules rearrange and form new molecules
2. simultaneous decomposition and synthesis
3. bonds broken and elements released
4. molecules formed from components
Answers
Answer:
Synthesis - 4
reversible- 2
exchange- 1
decomposition-3
Explanation:
In synthesis reaction two or more components combines to form a single product. example 2H2+O2⇒2H2O
In reversible reaction two reactants combine to form two products . The products then reacts and forms back the reactants. example N2 +3H2 ⇒2NH3
In exchange reaction there is an alternation of ions of reactants to form new products. AB+CD ⇒AC + BD
In decomposition reaction, molecules of a compound break down by the action of heat or light or catalyst. example CaCO3 ⇒CaO +CO2
Final answer:
Synthesis involves creating new molecules from components, while Decomposition involves breaking molecules down into their separate elements. Exchange is when molecules rearrange and form new molecules, and Reversible reactions can go forward or backwards.
Explanation:
In chemistry, various types of chemical reactions have different characteristics. Here's how they match with the provided definitions:
- Synthesis corresponds with 'molecules formed from components'(4) since synthesis is a type of chemical reaction where two or more simple substances combine to form a more complex substance.
- Reversible doesn't correspond directly with any of these definitions, but it designates a reaction that can proceed in either direction - from reactants to products or from products back to reactants.
- Exchange relates to 'molecules rearrange and form new molecules'(1) because an exchange reaction is one in which compounds exchange elements or groups in order to form different compounds.
- Decomposition is 'bonds broken and elements released'(3). In a decomposition reaction, a compound is broken down into simpler substances.
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Which of the following is NOT an example of a fossil fuel?a. coal b. natural gas c. petroleum d. methanol
When plastic deformation of a material occurs, the material _____.
10. If a car travels from Town A to Town B on one road at different speeds and stops at red lights, knowing the distance between the towns and the total time of the trip can allow you to calculate A. instantaneous velocity.B. deceleration.C. average velocity.D. uniform velocity.
Answers
Answer: Option (a) is correct.
Explanation:
When an object moves from its initial position, it acquires some energy. This energy is called kinetic energy, as it is governed by the motion of an object.
The formula to calculate kinetic energy is as follows.
kinetic energy =
where,
m = mass of object
v = velocity of object
Thus, it is concluded that kinetic energy is the energy an object has due to its motion.
Answers
Explanation:
Sodium has atomic number of 11 with electronic configuration of :
Sodium loose it single electron to attain stability of noble gas configuration. While this process electron gets removed from the outer shell of the sodium atom and it gains positive charge of +1.
(Ionization)
B. Earth is a primordial soup.
C. Organic molecules cannot survive in a reducing atmosphere.
PLEASE HELP AS SOON AS POSSIBLE!
Answers
Hope this helps!
(2) C, N, Ne, Ar (4) Na, Zn, As, Sb
Answers
No reason why you shouldn't be able to do it yourself. If you need a good online one check out ptable.org.
Anyways...
Series 1 is the correct answer. Beryllium is an (alkaline earth) metal, silicon is a metalloid, chlorine is a (halogen) nonmetal, and krypton is a noble gas.
(Series 2...carbon is a nonmetal, nitrogen is a nonmetal, neon is a noble gas, and argon is a noble gas...there is no metal or metalloid.
Series 3...potassium is an (alkali) metal, iron is also a metal, boron is a metalloid, and fluorine is a (halogen) nonmetal. There is no noble gas.
Series 4...sodium is an (alkali) metal, zinc is a metal, arsenic is a metalloid, and antimony is a metalloid...there is no noble gas.)
(1) Be, Si, Cl, Kr is the list of elements that includes a metal, a metalloid, a nonmetal, and a noble gas.
Shiny, malleable, ductile, and good at transferring heat and electricity are the characteristics of a metal. Metal beryllium (Be) is one.A substance with characteristics of both metals and nonmetals is referred to as a metalloid or semi-metal. Metalloid silicon is known as Si.
An element without metallic characteristics is referred to as a nonmetal. At ambient temperature, nonmetals are frequently gases or brittle solids. A nonmetal is chlorine (Cl).An element in group 18 of the periodic table that is inert and has a difficult time forming chemical compounds is referred to as a noble gas. A noble gas is krypton (Kr).
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Answers
hope this helps!!!
Answer:
Water Cycle
Explanation:
Edge 2021
(1) factory workers from the Northeast to the
Sun Belt
(2) communists deported to Russia as
undesirable aliens
(3) African Americans to northern cities to find
work
(4) refugees fleeing from eastern Europe to the
United States
Answers
The Great Migration during World War I refers to the movement of African Americans to northern cities to find work. Therefore, option (3) is correct.
What is Great migration?
The Great Migration was the movement of millions of African Americans moved from the rural Southern United States to the urban Northeast, Midwest, and West. The great migration was caused by the poor economic conditions for African American people.
The historic change brought by the migration was fueled because the migrants moved to the largest cities in the United States such as New York City, Chicago, Los Angeles, Philadelphia, Cleveland, and Washington, D.C. at a time when these cities had a central social, political, cultural and economic influence over the United States.
African Americans established effective communities of their own. Therefore the Great migration movement was actually sending African Americans to northerncities to find work.
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