Grade 9 Acids, bases, and salts

when a substance dissolves in water, the solution may become......or.....or stay......

• salty, sour, sweet

• neutral, sour, alkaline

• acidic, alkali, acidic

• acidic, alkali, neutral

Bases

• formed from joining positive and negative ions
• increase OH ions
• forms a salt and water
• increases H2O ions

Which of the following values would represent the pH of a strong base?

• 1

• 8

• 7

• 13

an aqueous soln turns red lithmus blue . excess addition of which of the following would reverse the change

• baking powder
• lime
• ammonium hydroxide solution
• HCL

which of the  foll is not mineral acid

• HCL
• H2SO4
• HNO3
• citric acid

which of the foll is not a base

• NAOH
• KOH
• NH4OH
• C2H5OH

Tastes bitter.

• Acids
• Bases
• Salts
• All

Choose 2 suitable reactants that can be used to make sodium chloride.

• sodium nitrate

• sodium hydroxide

• magnesium chloride

• hydrochloric acid

which of the following statement is correct?

• acids, bases, and salts dissoved in water are all conductor of electricity

• acids are conductors of electricity, bases are not, but salts dissovled in water are too

• only bases are conductos of electrisity

• only salts dissolved in water are condutors of electricity

complete the equation below:

Zn + H2SO4 --> ............. +............

• ZnSO4+ H2

• CO2 + H2O

• ZnOH + CO2