Chemical Reactions
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steve121123
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CHEMISTRY
Chemical Reactions
Chemical Hydration
Water's invisible role reshapes substances from minerals to medicines
5 days ago
0
How does chemical hydration affect the properties of a compound?
By simply mixing water on the surface without changing the compound's structure
By incorporating water molecules into its structure, altering physical and chemical behavior
By removing water molecules to make the compound more reactive
B
Bonbo
Me as you
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CHEMISTRY
Chemical Reactions
Oxidation
Electron loss in oxidation powers everything from rust to respiration
11 days ago
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Why must oxidation always be paired with reduction in chemical reactions?
Because electrons lost in oxidation must be gained by another substance in reduction
Because oxidation can occur independently without any electron transfer
Because oxidation only involves gaining electrons, not losing them
K
Kingkong
Loves outdoors. Hates snakes.
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CHEMISTRY
Chemical Reactions
Combustion
Flames are just the visible tip of a complex chemical reaction often hidden from sight
12 days ago
0
Why does combustion not always produce a visible flame?
Because combustion sometimes occurs without oxygen
Because combustion is not a chemical reaction but a physical change
Because flames only appear when substances vaporize during the combustion process
S
SteveO1
Technology and cars
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CHEMISTRY
Chemical Reactions
Chemical Reaction
Energy shifts during chemical reactions dictate whether substances transform spontaneously or need a spark
8 Feb 2026
0
What primarily determines whether a chemical reaction occurs spontaneously or requires an external energy input?
The number of atoms involved in the reaction
Whether the atomic nuclei change during the reaction
The energy change associated with the reaction (exothermic or endothermic nature)
E
editorfivestar
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CHEMISTRY
Chemical Reactions
Fundamentals of Chemical Reactions
Chemical reactions power everything from cooking to breathing by rearranging atoms and releasing energy
5 Feb 2026
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What primarily changes during a typical chemical reaction?
The nuclei of the atoms are altered
Atoms are destroyed and new elements are created
The arrangement of electrons and chemical bonds between atoms
J
Johnbarrow
John from Bartow
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CHEMISTRY
Chemical Reactions
Chlorination
Chlorination revolutionized water safety by effectively eliminating harmful pathogens worldwide
30 Jan 2026
0
What is the primary purpose of water chlorination in public health?
To add flavor to drinking water
To increase the mineral content of water
To disinfect water by killing harmful microorganisms
F
FordMotor
Ford makes good cars for great people. This is the page for our new F1 team.
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CHEMISTRY
Chemical Reactions
Chemical Reaction Process
Chemical reactions rearrange atoms to transform substances with energy changes
26 Jan 2026
0
What primarily changes during a classical chemical reaction?
The nuclei of atoms are transformed into different elements
The positions of electrons in chemical bonds are rearranged
The number of atoms in the reactants changes during the reaction
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