What are some alternative words for prickly pear? Synonyms for prickly pear This thesaurus page is about all possible synonyms, equivalent, same meaning and similar words for the term prickly pear. Princeton's WordNet (0.00 / 0 votes) Rate these synonyms: prickly pear, prickly pear cactus (noun) cacti having spiny flat joints and oval fruit that is edible in some species; often used as food for stock. Synonyms: prickly pear, prickly pear cactus. prickly pear (noun) round or pear-shaped spiny fruit of any of various prickly pear cacti. Synonyms: prickly pear, prickly pear cactus
Factors that influence the rate of a chemical reaction include temperature, state of matter of reactants, concentration, presence of catalysts, and pressure. PM Images, Getty Images. Anne Marie Helmenstine, Ph.D.or solids, the shape and size of the reactants makes a big difference in the reaction rate. Presence of Catalysts and Competitors. Catalysts (e.g., enzymes) lower the activation energy of a chemical reaction and increase the rate of a chemical reaction without being consumed in the process.
The first step toward a theory of chemical reactions was taken by Georg Ernst Stahl in 1697 when he proposed the phlogiston theory, which was based on the following observations. 1  Metals have many properties in common. 2  Metals often produce a calx when heated.