chemical reaction
Atoms are rearranged into new substances. This topic is part of Chemistry within Science & Nature. This page currently draws on 17 supporting questions, with answers and bonus facts available below.
chemical reaction trivia questions
A chemical reaction changes reactants into what?
Answer: Products
Bonus fact: Atoms are rearranged into new substances.
Do chemical reactions create or destroy atoms under ordinary conditions?
Answer: No
Bonus fact: Atoms are conserved and rearranged.
What visible sign can indicate a chemical reaction?
Answer: Gas formation or color change
Bonus fact: Temperature change, precipitate formation, and light can also be clues.
Combustion is a chemical reaction commonly known as what?
Answer: Burning
Bonus fact: Combustion usually releases heat and often light.
Metabolism is the set of chemical reactions that keep an organism what?
Answer: Alive
Bonus fact: Metabolism includes energy use and molecule building.
Which chemical reaction type powers the beetle's spray?
Answer: Rapid exothermic reaction
Bonus fact: Catalyzed reactions release heat and pressure.
Roasting coffee beans primarily creates flavor through what kinds of chemical reactions?
Answer: Browning reactions
Bonus fact: Maillard reactions and caramelization create many roasted aromas.
A catalyst speeds up a chemical reaction without being what?
Answer: Consumed overall
Bonus fact: Catalysts participate in steps but are regenerated.
In a chemical reaction, what does the limiting reagent determine?
Answer: The maximum amount of product that can form
Bonus fact: The reaction stops when the limiting reagent is used up, even if other reactants remain.
Chemical reaction rate describes how quickly what happens?
Answer: Reactants are converted into products
Bonus fact: Reaction rate can be expressed as a change in concentration per unit time.
Which change usually increases the rate of many chemical reactions?
Answer: Raising the temperature
Bonus fact: Higher temperature gives particles more kinetic energy and increases the fraction of collisions able to overcome activation energy.
What cooking process gives caramel its characteristic brown color and rich flavor?
Answer: Caramelization
Bonus fact: Caramelization is the browning of sugar through heat-driven chemical reactions.