This document defines acids and alkalis and provides their key properties. It states that acids produce hydrogen ions when dissolved in water and lists common acids like hydrochloric acid. It also notes that acids have a sour taste, turn litmus red, and have a pH below 7. Alkalis are defined as metal oxides or hydroxides soluble in water, with examples given. Alkalis are described as having a bitter taste, turning litmus blue, and having a pH above 7. The document outlines how both acids and alkalis react with other substances.

2. SUBMITTED BY
REMYA R.P.
BEd PHYSICALSCIENCE
REG.NO:13360005
COLLEGE OF TEACHER
EDUCATION
ARKKANNOOR

4. An acid is a substance
that produces hydrogen
ions when dissolved in
water.

5. HYDROCHLORIC ACID (HCl)
 NITRIC ACID (HNO3)
SULPHURIC ACID (H2SO4)
CABONIC ACID (H2CO3)
PHOSPHORIC ACID (H3PO4)
 ACETIC ACID (CH3COOH)

6. Acids have a sour taste.
Acids dissolve in water to form solutions that
conducts electricity.
Acids turn blue litmus red.
Acids have pH value less than 7.
Acids react with metals to form hydrogen gas.
Acids react with carbonates to form carbon
dioxide.
Acids reacts with bases to form salt and water.

7. An alkali is a metal oxide or
hydroxide that is soluble in
water.

8.  SODIUM HYDROXIDE (NaOH)
 POTASSIUM HYDROXIDE (KOH)
 CALCIUM HYDROXIDE [Ca(OH)2]
 BARIUM HYDROXIDE [Ba(OH)2]
 AQUEOUS AMMONIA (NH3).

9. Alkalis have a bitter taste and soapy feel.
Alkalis dissolve in water to produce
hydroxide ions.
Alkalis turn red litmus blue.
Alkalis have pH value more than 7.
Alkalis react with metals, ammonium
salts and acids

10.  Acids have a sour taste.
 Acids dissolve in water to
form solutions that conducts
electricity.
 Acids turn blue litmus red.
 Acids have pH value less
than 7.
 Acids react with metals,
carbonates and bases.
 Alkalis have a bitter taste
and soapy feel.
 Alkalis dissolve in water to
produce hydroxide ions.
 Alkalis turn red litmus blue.
 Alkalis have pH value more
than 7.
 Alkalis react with metals,
ammonium salts and acids