Base Review

In which type of reaction do ions in two compounds switch places?

• synthesis

• decomposition

• single replacement

• double replacement

Which is are characteristics of bases?

• Turns litmus paper red

• Turns litmus paper blue

Human blood has a pH of between 7.38 and 7.42. This means that the blood is ________.

• very acidic

• slightly acidic

• very basic

• slightly basic

An increase in the amount of hydroxide ions in a solution ____ the pH.

• raises

• lowers

• does not effect

• doubles

Fill in the box with the question mark. What happens to the glowing splint for Carbon Dioxide or Ammonia?

• Continues to burn

• Goes out

• Ignites

• Does not ignite

Fill in the box with the question mark. What happens to the glowing splint for Hydrogen?

• Continues to burn

• Goes out

• Ignites

• Does not ignite

Tags

NGSS.MS-PS1-2

Consider the following reaction: HCl + KOH --> H2O + KCl
Identify the base in the reaction above.

• HCl

• H2O

• KOH

• KCl

What is being donated/accepted between conjugate acid-base pairs?

• a hydrogen (H+) ion

• a hydroxide (OH-) ion

• water

• a neutron

Which of the following shows the correct conjugate acid base pair?

• HCI (acid) / H₃O⁺ (conjugate base)

• HCI (acid) / CI^- (conjugate base)

• HCI (base) / CI^- (conjugate acid)

• HCI (base) / H₃O⁺ (conjugate acid)

Tags

NGSS.MS-PS1-1

Which of the following is a characteristic property of bases?

• Turns litmus paper red

• Feels slippery

• Reacts with metals to produce hydrogen gas

• Has a sour taste