G7-SCI-L4 Acids, Bases, and Salts

What is the taste of acids?

• Sour
• Bitter
• Sweet
• Salty

Which substance is not acidic?

• Lemon juice
• Orange juice
• Baking soda
• Vinegar

What is the chemical nature of substances that taste sour?

• Acidic
• Basic
• Neutral
• Salty

What is the taste of bases?

• Sour
• Bitter
• Sweet
• Salty

Which indicator is used to test whether a substance is acidic or basic?

• Litmus
• Turmeric
• China rose petals
• Phenolphthalein

What happens when an acid is mixed with a base?

• They neutralize each other
• They become more acidic
• They become more basic
• They become neutral

What is produced in a neutralization reaction?

• Salt and water
• Salt and acid
• Salt and base
• Salt and indicator

What is the nature of a solution that does not change the color of litmus?

• Acidic
• Basic
• Neutral
• Salty

What is the purpose of an antacid tablet?

• To treat acidity
• To treat indigestion
• To treat a bee sting
• To treat a burn

What is the effect of soap solution on turmeric paper?

• It turns red
• It turns blue
• It turns yellow
• It turns green