Acids

A substance that is 3 on the pH scale would be a(n):

• acid

• base

• neutral

• solute

What color does litmus paper turn in the presence of an acid?

• blue
• black
• green
• red

Tags

NGSS.MS-PS1-2

Which of the following is NOT a characteristic of an acid?

• sour taste
• corrosive
• it feels slippery
• it can burn the skin

Which of the following is an acid?

• soap

• baking soda

• orange juice

• pure water

Vinegar is an example of:

• An acid.

• A base.

• Neither an acid nor a base.

Tags

NGSS.MS-PS1-2

How can you test to show that when a metal reacts with water, hydrogen gas is produced?

• Relights a glowing splint
• A lit splint produces a squeaky pop
• Puts out a burning splint
• Is cold to the touch

What gas is produced when a metal reacts with an acid?

• Water vapour
• Acidic gas
• Hydrogen
• Nitrogen

If potassium reacts with water what are the 2 products of the reaction?

• potassium hydroxide + oxygen

• potassium hydroxide + hydrogen

• potassium + hydrogen oxide

• Potassium hydroxide + hydrogen oxide

Copper metals react with water and forms ____ and ____

• oxide and hydrogen gas

• Hydroxide and hydrogen gas

• carbonates and hydrogen gas

• No reaction

Complete the following reaction:
Sulphuric acid + sodium carbonate
--> 

• Carbon dioxide + water 
• calcium carbonate + water + carbon dioxide 
• Sodium sulphate + water + carbon dioxide 
• Sodium chloride + water + carbon dioxide 

Tags

NGSS.MS-PS1-2