Acidic, Basic, Alkaline and Amphoteric Substances

Which word matches this definition "a molecule or other species which can donate a proton (H⁺) or accept an electron pair in reactions"?

• Base

• Alkali

• Acid

• Amphoteric

Which word matches this definition "a molecule or other species which can accept a proton or donate an electron pair in reactions"?

• Base

• Alkali

• Acid

• Amphoteric

Which word matches this definition "a molecule or other species which can accept a proton or donate a proton"?

• Base

• Alkali

• Acid

• Amphoteric

Which word matches this definition "a soluble substance which can accept a proton or donate an electron pair in reactions"?

• Base

• Alkali

• Acid

• Amphoteric

When you add any acid to any base, you always make salt and...?

(a)  

Tags

NGSS.MS-PS1-5

Acids dissociate in water. Which equation below shows the correct dissociation for hydrochloric acid?

• HCl _(aq) --> H _(aq) + Cl _(aq)

• HCl _(aq) --> H⁺ _(aq) + Cl⁺ _(aq)

• HCl _(l) --> H⁺ _(aq) + Cl^- _(aq)

• HCl _(aq) --> H⁺ _(aq) + Cl^- _(aq)

Alkaline substances dissociate in water. Which equation below shows the correct dissociation for potassium hydroxide?

• KOH --> 2K⁺ + 3OH^-

• KOH _(aq) --> K- _(aq) + OH^- _(aq)

• KOH _(s) --> K⁺ _(aq) + OH^- _(aq)

• KOH _(aq) --> K⁺ _(aq) + OH^- _(aq)

Tags

NGSS.HS-PS1-7

H⁺ _(aq) + OH^- _(aq) --> H₂O _(l)

This ionic equation represents what process/reaction?

• Combustiion - Acid and an Alkali

• Neutralisation - Acid and an Alkali

• Neutralisation - Acid and a solid base

• Neutralisation - Base and an Alkali

Tags

NGSS.HS-PS1-7

2H⁺_(aq) + XO_(s) ⇒ X²⁺_(aq) + H₂O _(l)

X represent a metal. What is the above ionic equation showing?

• Acid reacting with a base

• Acid reacting with an alkali

• Base reacting with an alkali

Which of the following is an amphoteric substance?

• HCl

• NaOH

• KOH

• Al₂O₃