Acids and Bases IGCSE

Acids

100

Acids increase the number of positively charged ______ ions when dissolved in water.

Hydrogen ions

200

acids taste: __________.

tastes sour?

300

Acids turn litmus paper this color... red or purple?

What is red?

400

This chemical property of acids eats away and destroys things.

What is corrosive?

500

Name a common lab acid

Hydrochloric, sulphuric, nitric

Bases

100

Bases increase the number of negatively charged _______ ions when dissolved in water.

What is hydroxide ions or OH- ions?

200

bases taste______

tastes bitter? 

300

what's another name for a base on the pH scale?

What is alkali?

400

Name a common use for a base in your home

toothpaste, shampoo, dishwashing detergent, drain cleaner etc

500

Name the commonly used alkali in the lab that has the formula NaOH

Sodium hydroxide

Strong Acids and Bases or Weak Acids and Bases

100

Name a weak acid you learnt about in class

Vinegar or citric acid etc

200

Only a few hydrogen or hydroxide ions are released in water.

weak acids/bases?

300

______ have a pH around 1-2.

What is strong acids?

400

_____ have a high pH of around 11-14.

What is strong bases?

500

_____ have a pH between 4-6.

weak acids?

Acids and Bases

100

These are two ways I can measure the pH of a substance

What is litmus paper and universal indicator?

200

What colour is a pH 6 in universal indicator

yellow

300

What side of the pH scale are based on?

What is right side?

400

What is neither an acid or a base? give an example

7, pure water

500

Acid + Base --> _____________ + water

metal salt

Acid/Base Reactions

100

Name the acid HCl

Hydrochloric acids

200

Name the base Ca(OH)₂

Calcium Hydroxide

300

Name the acid H₂SO₄

Sulfuric Acid

400

Name the base CaCO₃

Calcium carbonate

500

Fill in the blanks below Hydrochloric Acid+ Sodium hydroxide --> _______ + ________

Sodium Chloride + water?