Acids and Bases

When litmus paper is dipped into and acidic solution, the litmus paper will turn .......

• red

• blue

Acids turn ........ litmus paper red

• orange

• blue

• green

• gray

Acids react with metals to produce ....... .

• water

• chlorine gas

• hydrogen gas

• oxygen gas

Tags

NGSS.MS-PS1-5

Which of the following is an acidic substance?

• Crayon

• Candle wax

• Soap

• Lemon juice

You have been blind-folded by your friend and given an acidic substance to taste.

Which food could you have been given?

• Vanilla ice cream

• Egg

• Lemon

• Chocolate cake

Acids react with (1) to form (2) gas.

• 2: Oxygen

• 1: Metals

• 1: Nonmetals

• 2: Hydrogen

Oranges contain citric acid. Acids taste ...... .

• Umami!

• Sweet!

• Sour!

• Bitter!

When red litmus paper is dipped in a\an ........ , it turns blue

• Acid

• Base

A substance is mixed in water.

Which of the following would prove that the substance is a base?

• It releases OH- ions in water

• It releases H+ ions in water

• It releases H- ions in water

• It releases OH+ ions in water

Which of the following is most likely to be basic in nature?

• Orange juice

• Soda

• Soap

• Citrus fruit