Chemical word equations

What is essential for a combustion reaction to begin?

• Carbon dioxide
• Fuel 
• Fuel, oxygen and heat
• Water and oxygen

Acid + Metal --> ?

• Salt + Water
• Salt + Hydrogen
• Salt
• Hydrogen

Tags

NGSS.MS-PS1-2

Iron + Hydrochloric acid --> ?

• iron sulfate + water
• iron + hydrogen
• iron chloride + hydrogen
• iron chloride + water

Magnesium + sulphuric acid --> ?

• magnesium sulfate + water
• magnesium sulfate + hydrogen
• magnesium chloride + hydrogen
• magnesium chloride + water

Tags

NGSS.HS-PS1-2

Pure water is _______ on the pH scale.

• Acid
• Base
• Neutral

What is the range of pH values in an acidic solution?

• 0-6
• 8-14
• 15-239058204958
• pH = 7

Tags

NGSS.MS-PS1-2

When potassium reacts with sulphuric acid, what is the name of the salt produced?

• Potassium Sulphide
• Potassium Sulphur
• Potassium Sulphuric
• Potassium Sulphate

Tags

NGSS.HS-PS1-2

Which of the following is the product of the reaction of aluminium and oxygen?

• aluminium oxide.
• metal oxide
• aluminium ore
• aluminium and oxygen

Which of the following reactions produces calcium oxide?

• calcium and oxide
• calcium and water
• calcium and air
• calcium and oxygen