Science unit 6

Sodium is more reactive than potassium

• False

• True

Copper is a highly reactive metal

• False

• True

When calcium reacts with water it produces hydrogen gas

• True

• False

Nitric acid + sodium =

• Sodium nitrate + hydrogen

• Sodium nitric

• Nitric sodiumate + hydrogen

what is the product of the reaction (metal + acid)

• Salt + carbon dioxide

• Salt + hydrogen

• Water + carbon monoxide

How do you know a reaction has taken place

• Fizzing

• Temperature change

• Color change

• All answers are correct

Which metal is more reactive

• Potassium

• Sodium

What is the definition of tarnishing

• Going dull

• erosion

• None are correct

turn (4fe + 3O2☞︎ Fe2 O3) into a word equation

• Iron oxide

• Iron + oxygen = iron oxide

When group 1 metals react with water they produce as hydroxide and carbon dioxide gas

• False

• True