Acid+alkalis Flashcards
(27 cards)
What is an acid?
A substance that donates protons (H+) in a chemical reaction.
What is an alkali?
A type of base that dissolves in water to produce hydroxide ions (OH-).
True or False: All acids taste sour.
True.
Fill in the blank: The pH scale ranges from ____ to ____.
0 to 14.
What is the pH of neutral solutions?
7.
What color does litmus paper turn in acidic solutions?
Red.
What color does litmus paper turn in alkaline solutions?
Blue.
What is the formula for hydrochloric acid?
HCl.
Multiple Choice: Which of the following is a strong acid? A) Vinegar B) Lemon juice C) Sulfuric acid D) Baking soda
C) Sulfuric acid.
What is a neutralization reaction?
A reaction between an acid and a base to produce salt and water.
True or False: Bases have a pH greater than 7.
True.
What is the chemical formula for sodium hydroxide, a common alkali?
NaOH.
Fill in the blank: Acids react with metals to produce ____ gas.
hydrogen.
What substance is formed when an acid reacts with a carbonate?
Salt, water, and carbon dioxide.
Multiple Choice: Which of the following is not an indicator? A) Phenolphthalein B) Methyl orange C) Water D) Universal indicator
C) Water.
What is the effect of acids on blue litmus paper?
It turns red.
What is the effect of alkalis on red litmus paper?
It turns blue.
Fill in the blank: The process of neutralization produces ____ and water.
salt.
What is the term for a substance that can act as both an acid and a base?
Amphoteric.
True or False: All alkalis are bases, but not all bases are alkalis.
True.
What is the pH range for acids?
0 to less than 7.
What does a pH of 14 indicate?
A strong alkali.
Multiple Choice: Which of the following is a weak acid? A) Hydrochloric acid B) Acetic acid C) Nitric acid D) Sulfuric acid
B) Acetic acid.
What is the primary use of pH indicators?
To determine the acidity or alkalinity of a solution.
