Substances That Start Chemical Reactions Are Called

question 36

Multiple Choice

Substances that start chemical reactions are called

• A)substrata.
• B)starters.
• C)promoters.
• D)reactants.
• E)products.

---

Definitions:

Modern Humans

Homo sapiens, the only extant human species, characterized by advanced cognitive abilities, language, and the ability to create complex tools and cultures.

Eukarya

One of the three domains of life, consisting of organisms with cells that have a nucleus enclosed within membranes, unlike bacteria and archaea.

Protista

A kingdom of simple eukaryotic organisms, usually unicellular, that are neither plants, animals, nor fungi, including amoebas, and algae.

Animalia

A kingdom of multicellular eukaryotic organisms that are typically motile and responsive to their environment.