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.
Answers: 1
Chemistry, 22.06.2019 06:30
Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.
Answers: 1
Chemistry, 22.06.2019 07:30
All cells are made of four types of acids, lipids, proteins, and carbohydrates.
Answers: 1
Chemistry, 22.06.2019 10:30
What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature
Answers: 1
Chemistry, 22.06.2019 21:00
Use the measurements in the table to determine which unidentified metal has the highest density. metal volume mass a 10.5 cm3 122 g b 14.2 cm3 132 g c 16.1 cm3 115 g d 12.7 cm3 126 g
Answers: 2
Select the correct answer from each drop-down menu.
Complete these descriptions of different kinds...
Social Studies, 10.03.2021 19:40
Mathematics, 10.03.2021 19:40
Health, 10.03.2021 19:40
Mathematics, 10.03.2021 19:40
History, 10.03.2021 19:40
Mathematics, 10.03.2021 19:40
Mathematics, 10.03.2021 19:40
Mathematics, 10.03.2021 19:40
Chemistry, 10.03.2021 19:40