Chemical process safety

Chemical reactor

Chemical senses

Chemical separation (chemical engineering)

Chemical separation techniques

Chemical symbols and formulas

Chemical thermodynamics

Chemical thermodynamics modeling

Chemical vapor deposition

Chemicals from renewable feedstocks

Chemiluminescence

Chemiosmosis

Chemistry

Chemistry of new bismuth compounds

Chemistry through ball milling

Chemometrics

Chemoreception

Chemostat

Chemostratigraphy

Chemotherapy and other antineoplastic drug treatments

Cherry

Chert

Chestnut

Chevrel phases

Chevrotain

Chickenpox and shingles

Chicle

Chicory

Chicxulub impact crater

Chikungunya virus disease

Child-Langmuir law

Childhood lead exposure and lead toxicity

Chilopoda

Chimaeriformes

Chimera

Chimney

Chimpanzee behavior

Chinchilla

Chinese historical documents and climate change

Chinese space program

Chinook

Chipless RFID

Chipmunk

Chiral Brønsted acid catalysis

Chirality in rotating nuclei

Chiroptera

Chitin

Chlamydia

Chlorine

Chlorite

Chloritoid

Chloromonadida

Chlorophyceae

Chlorophycota

Chlorophyll

Choanoflagellida

Choke (electricity)

Choked flow

Cholera

Cholera in Haiti

Cholesterol

Cholesterol and the SREBP pathway

Cholesteryl ester transfer protein (CETP)

Choline

Chondrichthyes

Chonotrichida

Chopping

Chordata

Chromadorida

Chromatic aberration

Chromatin

Chromatography

Chromatophore

Chromium

Chromophycota

Chromosome

Chromosome “fusions” in karyotype evolution

Chromosome aberration

Chromosphere

Chromothripsis

Chronic fatigue syndrome

Chronic low back pain

Chronic obstructive pulmonary disease (COPD)

Chronic wasting disease

Chronograph

Chronometer

Chrysoberyl

Chrysocolla

Chrysomonadida

Chrysophyceae

Chrysotile

Cicada

Ciconiiformes

Cidaroida

Cilia and flagella

Ciliatea

Ciliophora

Cinchona

Cinematography

Cinnamon