Lesson 7 - Acids and Bases

What do Acids start with?

Hydrogen

What do bases end with?

Hydroxide (OH)

Properties of acids

produce hydrogen ions —> start with H, tastes sour, burn the skin/corrosive, acids turn litmus papers red, forms ions and can conduct an electrical current, pH scale: <7

Properties of bases

bases produce hydroxide ions, tastes bitter, feels slipper and corrosive, litmus papers turn blue, pH scale: >7

Examples of acids

vinegar, sulphuric acid, hydrochloric acid (stomach acid)

Examples of bases

sodium hydroxide (oven cleaner), magnesium hydroxide

Is salt neutral, acidic, or basic

Neutral

pH scale indicates the

concentration of hydrogen ions (H+) and hydroxide ions (OH-)

Name a binary acid

hydro “element” ic acid

(e.g hydrochloric acid —> HCl)

Name an “ate” polyatomic acid

“element” ic acid

(e.g H2SO4 —> sulphuric acid)

Name an “ite” polyatomic acid

“element” out acid

(e.g H2SO3 —> sulphurous acid)