Litmus Paper
  • Liquid indicator that changes pink in the presence of a base
  • A type of paper used to indicate the presence of acids and bases
  • a chemical that changes color in the presence of acids and changes a different color in the presence of bases
  • the amount of solute dissolved in solution
Neutralization
  • Compound formed by a metal and a nonmetal
  • The reaction between an acid and a base which produces a salt and water
  • A chemical whose color changes in the presence of acids and bases
  • To decrease the amount of solute as compared to the amount of solvent in a solution
Which of the following is an acid?
  • Ammonia
  • Drain cleaner
  • Shampoo
  • Orange
Which of the following statements is true concerning acids and bases?
  • acids and bases don't react with each other
  • acids mixed with bases neutralize each other
  • acids mixed with bases make stronger bases
  • acids mixed with bases make stronger acids
Which is the correct set of acid properties, as described by Boyle:
  • sour taste, corrosive, change litmus from red to blue
  • sour taste, corrosive, change litmus from blue to red
  • sweet taste, slippery, change litmus from blue to red
  • sour taste, slippery, change litmus from blue to red
What is the approximate pH of seawater?
  • 2
  • 5
  • 7
  • 9
When the pH scale goes lower than 7, it means that the substance is ______.
  • neutral
  • acidic
  • basic
  • salt
Which concept is correct?
  • Arrhenius stated that acids are hydrogen ion donors
  • Lewis stated that acids accept negatively charged ion acceptors
  • Bronsted-Lowry stated that bases accepts Hydrogen ions
  • All of the statements are correct
A pH scale of 0 _____ to people when exposed without protection
  • is beneficial
  • is dangerous
  • has no effect
  • medicinal value
This citrus fruit commonly consumed at home has a ph level of _____.
  • below 7
  • 7
  • above 7
  • 0
When an indicator (litmus paper ) is dipped in these liquids , there will be a change from ____
  • blue to red
  • red to pink
  • pink to purple
  • pink to yellow
If you put too much lemon in your glass and it is too sour , how will you control the taste ?
  • add more lemon juice
  • add more water
  • add salt
  • all of these
The type of acid in these products is _____
  • sulfuric acid
  • lactic acid
  • sulfuric acid
  • acetic acid
Acid rain is a phenomenon and it is caused by ____.
  • the air in the atmosphere
  • pollutants that reacts with the air
  • meteorites falling on Earth
  • weather conditions
Which statement is incorrect with water?
  • It is composed of hydrogen and oxygen molecules.
  • it has a neutral ph of 7.
  • It reacts with base to form salt
  • Water with minerals is a solution.
Stomach produces acidity to ______ digestion of food.
  • delay
  • facilitate and help
  • stop the total
All solutions that fall between 0 and 6.9 are
  • Acids
  • Bases
  • Neutral
  • Phytoplankton
Which is most acidic?
  • milk
  • Lemon Juice
  • bleach
This image represents
  • Neutralization reaction
  • synthesis
  • decompostion
  • single displacement
What is the range of pH values in a basic solution?
  • 0-6
  • 8-14
  • 7
  • 0-14
What is the name of this ion: H3O+?
  • helium ion
  • hydrogen ion
  • hepatic ion
  • hydronium ion
Which of the following is NOT a strong acid?
  • HCl
  • HClO5
  • H2SO4
  • HNO3
Which one of the following statements about strong acids is TRUE?
  • Strong acids are 100% ionized in water.
  • The conjugate base of a strong acid is a strong base.
  • Strong acids are very concentrated acids.
  • Strong acids produce solutions with a higher pH than weak acids.
Which of the following is a salt: ammonia or sodium chloride?
  • ammonia
  • sodium chloride
The difference between a strong and weak acid is:
  • Strong acids stay intact in water weak acids don't
  • Strong acids are slippery weak acids aren't
  • Strong acids break apart in water. Weak acids stay intact
  • Weak acids break apart in water most of the time, strong acids do all of the time.
Why does vinegar help preserve things like pickles?
  • It keeps moisture in.
  • It preserves flavors and crispness
  • It kills bacteria that break down foods.
  • It keeps the cells alive
Which solution releases H+ in solution?
  • Base
  • Acid
  • Buffer
  • Water
Bleach is a strong base, what is the pH level of bleach?
  • 13
  • 14
  • 1
  • 2
The following properties are describing ______:* pH range of 0-6.9*turn litmus red*contains more H+ than OH-
  • acids
  • bases
  • salts
  • neutralization
A way to measure the concentration of hydrogen ions in a solution is to use a(n) _____.
  • indicator
  • litmus
  • pH scale
  • acid
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