All Biology Quizzes – Flashcards

What is a base used in toothpaste?

What type of substance reacts with limestone (CaCO3) and produces carbon dioxide gas?

H2CO3 is used in soft drinks. What is the name of this compound?

The main active components of bleach and many other household cleaners are

Which pair of substances would most likely result in the production of a solid when reacting with a base?

Soaps feel slippery on our hands because they dissolve the oil on our skin, decreasing friction. This is because soap contains

Which is a characteristic of a strong base?

What is a common use of bases?

When does phenolphthalein turn pink

Which pair of substances would most likely result in the production of a solid when reacting with a base

Which of the following best defines an acid

Which of these substances contributes to soap's slippery texture

Which compound plays an important role in leather processing and electroplating

Look at the reaction below. mc022-1.jpg Which substance is the acid in the reaction

Which is a characteristic of a strong base

Several substances are labeled on the pH scale below. mc025-1.jpg Which substance has the lowest [H+] concentration but is still considered an acid?

Which of these correctly defines the pOH of a solution

How can the pH of a solution be calculated if the pOH is known

A solution containing HCl would likely have

Which would most likely be the pH of a highly-corrosive acid

A solution of ammonia has a pH of 11.8. What is the concentration of OH- ions in the solution

The pOH of a solution is 10.75. What is the concentration of OH- ions in the solution?

Which of these equations correctly expresses the self-ionization of water

A solution of HCl has mc012-1.jpg = 0.01 M. What is the pH of this solution

The pH of a solution decreases by 2.0. How does the hydronium ion concentration of the solution change

What is the equilibrium constant of pure water at 25°C

How can the pH of a solution be calculated if the pOH is known?

Note the pH and pOH values labeled with letters on the pH scale below. mc023-1.jpg Based on log rules and the way pH is calculated, what is the difference in [OH- ] concentration between point A and point B

the water cycle shown below, which process is happening at step 3? mc011-1.jpg

Which process could cause ice to form a thin layer over a lake?

Which statement best explains why water is known as the universal solvent

Which statement best explains why water is essential for all living things

Which example illustrates adhesion

Which point(s) in the water cycle below best illustrate(s) water changing to a gas, and which term(s) could describe it? mc015-1.jpg

Which best explains the surface tension of water

What is demonstrated by water moving up a straw

Which is the best definition of activation energy

Which statement best describes the amount of catalyst that remains at the end of a reaction

A student designs an experiment to test substances X, Y, and Z, to determine which one is a catalyst for the reaction: A + B ® C. Only one of the unknown substances is a catalyst, and the others are nonreactive with A, B, or C. When 10 mL of A is added to 10 mL of B, the reaction takes twenty seconds. Bubbles form when the product C is created. The student prepares three test tubes, each containing both reactants A and B. She adds unknowns X, Y, and Z to test tubes 1, 2, and 3, respectively. She then times the reaction in each test tube from the point when the unknown is added until bubbling stops. How can the student identify the catalyst?

How does a catalyst work

What must happen before a chemical reaction can begin

The lock-and-key mechanism refers to

Photosynthesis is an example of

Which two substances bind using a lock-and-key mechanism?

Which statement correctly describes a chemical reaction

A substance that influences the reaction but does not participate in the reaction is a

Which reaction is exothermic?

The pOH of a solution is 6.0. Which statement is correct? Use mc030-1.jpg and mc030-2.jpg.

Four different solutions (I, II, III, and IV) are labeled on the pH scale below. mc026-1.jpg Why would solution IV be considered the most concentrated base out of the four substances

How does litmus paper identify a base

The pH of a solution is 2.0. Which statement is correct? Useful formulas include mc021-1.jpg, mc021-2.jpg, mc021-3.jpg, and mc021-4.jpg.

How does a catalyst influence a chemical reaction

The diagram shows two water molecules. mc008-1.jpg What does the dotted line between the water molecules represent

By which process does water vapor become a cloud

Sublimation is the opposite of deposition just as evaporation is the opposite of

What would happen to life on Earth if all the liquid fresh water were used up

Why is citric acid added to food

H2SO4 is added to a large beaker of water. How is the solution different from the original water?