Unit 7 - Acids, bases and salts

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

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Front (Question)

Properties of acids

Back (Answer)

• Contain H^+ ions • Soluble in water • Sour to the taste • Corrosive

Front (Question)

Properties of bases

Back (Answer)

• Found as metal oxides (O^2-), metal carbonates (CO3^2-), metal hydroxides (OH^-) or ammonia • Some are soluble in water - called alkalis and are metal hydroxides • Soapy to the touch • Corrosive

Front (Question)

Indicator

Back (Answer)

A chemical substance that changes color with changing H^+ concentration

Front (Question)

Types of indicators

Back (Answer)

• Litmus • Methyl orange • Universal indicator paper • Thymolphthalein

Front (Question)

Litmus colors for acids and bases

Back (Answer)

• Acid = Red • Base = Blue

Front (Question)

Methyl orange colors for acids and bases

Back (Answer)

• Acid = Red • Base = Yellow

Front (Question)

Universal indicator paper colors for acids and bases

Back (Answer)

• Strong acid = Red • Weak acid = Orange/Yellow • Strong base = Purple • Weak base = Blue

Front (Question)

Thymolphthalein colors for acids and bases

Back (Answer)

• Acid = colorless • Base = Blue

Front (Question)

pH scale values

Back (Answer)

• 0-6 = Acid • 7 = Neutral • 8-14 = Alkaline (base)

#10

Front (Question)

Equation for an acid and metal reacting together

Back (Answer)

Acid + Metal –> Salt + Hydrogen

#11

Front (Question)

Equation for an acid and base reacting together

Back (Answer)

Acid + Base –> Salt + Water

#12

Front (Question)

Equation for an acid and metal carbonate reacting together

Back (Answer)

Acid + Metal carbonate –> Salt + Carbon dioxide + Water

#13

Front (Question)

Equation for an acid and ammonia reacting together

Back (Answer)

Acid + Ammonia –> Salt

#14

Front (Question)

Products of ammonium salts reacting with metal hydroxides

Back (Answer)

• Ammonia • Salt • Water

#15

Front (Question)

Brønsted-Lowry theory of acids and bases

Back (Answer)

• Acid is capable of donating a proton • Base accepts a proton • Water is amphoteric - can act as both acid and base • Strong acids and bases ionize completely in water • Weak acids and bases only partially ionize in water • The conjugate base of an acid is formed after the acid donates the proton • The conjugate acid of a base is formed after the base accepts a proton • The two species in a conjugate acid-base pair have the same molecular formula except the acid has an extra proton compared to the conjugate base

#16

Front (Question)

Elements that make acidic oxides

Back (Answer)

Non-metals

#17

Front (Question)

Elements that make basic oxides

Back (Answer)

Metals

#18

Front (Question)

Amphoteric

Back (Answer)

A substance that behaves both as an acid or a base

#19

Front (Question)

Examples of amphoteric oxides

Back (Answer)

• Aluminum oxide • Zinc oxide

#20

Front (Question)

Possible reactants that amphoteric oxides can react with

Back (Answer)

• Acid and bases to form a salt and water

#21

Front (Question)

Salts

Back (Answer)

Ionic compounds made of positive ions/cations and negative ions/anions

#22

Front (Question)

Sources of cations

Back (Answer)

• Metal • Metal oxide • Metal hydroxide • Metal carbonate

#23

Front (Question)

Sources of anions

Back (Answer)

• Hydrochloric acid (Cl^-) • Sulfuric acid (SO4^2-) • Nitric acid (NO3^-)

#24

Front (Question)

Salt in a solid state

Back (Answer)

Crystals