3.1 Acids and Alkalis

Cards (45)

Acids have a sour taste
What is the pH of acids?
Less than 7
What is the pH range for acids?
Less than 7
Acids react with metals to produce hydrogen gas. 
True
Acids have a sour taste
What is the pH of alkalis?
Greater than 7
What color does litmus paper turn in alkalis?
Blue
Acids react with metals to produce hydrogen gas. 
True
Alkalis have a bitter taste
What is the pH range for neutrality on the pH scale?
7
What color does litmus turn in alkalis?
Blue
Acids have a pH less than 7
Acids turn litmus paper red
Alkalis turn litmus paper blue
What is the pH of lemon juice?
Acidic
What are common examples of indicators?
Litmus, phenolphthalein, universal indicator
When hydrochloric acid (HCl) reacts with sodium hydroxide (NaOH), the products are sodium chloride (NaCl) and water
Baking soda is also known as sodium bicarbonate
What color does litmus paper turn in acids?
Red
Alkalis react with metals to produce hydrogen gas.
False
Acids have a sour taste
What is the pH of alkalis?
Greater than 7
What color does litmus paper turn in alkalis?
Blue
What is an example of an alkaline substance?
Baking soda
Universal indicator turns purple in strong alkalis. 
True
What gas do acids produce when they react with metals?
Hydrogen
What is the taste of alkalis?
Bitter
Baking soda is an example of an alkaline substance.
True
What is the general equation for a neutralization reaction?
Acid + Alkali \rightarrow Salt + Water</latex>
Citric acid is found in citrus fruits.
True
What color does litmus paper turn in acids?
Red
Acids react with metals to produce hydrogen gas. 
True
Alkalis have a bitter taste
What is the pH of acids?
Less than 7
What color does litmus paper turn in acids?
Red
Alkalis react with metals to produce hydrogen gas.
False
Lemon juice is an example of a acidic
Phenolphthalein turns pink in alkalis
Acids have a bitter taste.
False
Alkalis have a pH greater than 7. 
True