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.
А
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.
А
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.
Submit
Answers: 2
Biology, 22.06.2019 02:00
The pharynx is the structure in the body that serves as a pathway of both air and food. how does the body make sure that food does not get into the lungs? the salivary glands secrete enzymes that pull food out of the air pathway. the small intestine pushes the air out of the digestive system. the pancreas breaks down food in the air pathway. the epiglottis closes the air pathway so that food will not enter it.
Answers: 1
Biology, 22.06.2019 03:50
The chromosomal structure that limits the number of cell divisions of a cell is the the chromosomal structure that limits the number of cell divisions of a cell is the kinetochore telomere histones centromere
Answers: 3
Biology, 22.06.2019 08:30
Anormal appearing couple is found to be heterozygous recessive for albinism both have the genotype aa the gene responsible for albinism is recessive to the normal pigment-producing gene what are the changes of their children being albino
Answers: 2
Select the correct answer from each drop-down menu.
Complete these descriptions of different kinds...
Social Studies, 04.09.2021 22:00
Mathematics, 04.09.2021 22:00
Mathematics, 04.09.2021 22:00
Advanced Placement (AP), 04.09.2021 22:00
Mathematics, 04.09.2021 22:00
Chemistry, 04.09.2021 22:10
Social Studies, 04.09.2021 22:10
Mathematics, 04.09.2021 22:10
Mathematics, 04.09.2021 22:10
History, 04.09.2021 22:10
Chemistry, 04.09.2021 22:10
Mathematics, 04.09.2021 22:10
Mathematics, 04.09.2021 22:10
Mathematics, 04.09.2021 22:10
History, 04.09.2021 22:10
Social Studies, 04.09.2021 22:10
English, 04.09.2021 22:10