![subject](/tpl/images/cats/himiya.png)
Select the correct answer from each drop-down menu.
Complete these descriptions of different kinds of chemical reactions.
A
reaction involves burning. This reaction requires energy to start, but it releases more energy than is required to start it. Oxygen is always a reactant, and the products are usually carbon dioxide and water.
A
reaction occurs when a compound breaks down. This reaction has one reactant and two or more products. Energy, as from a battery, is usually needed to break the compound apart.
A ___
reaction occurs when two substances combine to form one substance. An example of this kind of reaction is rusting, in which iron reacts with oxygen.
A reaction that involves the replacement of atoms is a
reaction. An atom from one reactant replaces an atom in the other reactant. This kind of reaction has two reactants and two products. An example is the neutralization of an acid and an alkali.
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 21:00
Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 21:00
Kp is the equilibrium constant for dissociation of the propionic acid dimer. what is the sign of the slope for a plot of the natural logarithm of kp vs. inverse temperature for this reaction?
Answers: 1
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 07:00
Explain what happened when the storm surges from hurricanes reached the gulf coast
Answers: 1
You know the right answer?
Select the correct answer from each drop-down menu.
Complete these descriptions of different kinds...
Questions
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 23.12.2019 08:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 23.12.2019 08:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 23.12.2019 08:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 23.12.2019 08:31
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/istoriya.png)
History, 23.12.2019 08:31
![question](/tpl/images/cats/mat.png)
Mathematics, 23.12.2019 08:31
![question](/tpl/images/cats/mat.png)
Mathematics, 23.12.2019 08:31
![question](/tpl/images/cats/mat.png)
Mathematics, 23.12.2019 08:31
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
English, 23.12.2019 08:31