Chemical Changes Flashcards
1
Q
Silver does not corrode in air or water. What word can we use to describe this property of silver?
A
unreactive
2
Q
When a metal rusts, it gains oxygen. This means it is a(n) ______________ reaction. What one word completes the sentence?
A
oxidation
3
Q
Look at the equation for a displacement reaction below. What substance lost electrons in the reaction? Give the full name, not the symbols.
(in photos)
A
zinc
4
Q
Look at the displacement reaction in the experiment below. To balance this equation what number should go in front of copper in the products?
(in photos)
A
3
5
Q
Complete the equation metal + acid —> salt + ________
A
hydrogen
6
Q
Magnesium sulphate can be made by reacting magnesium metal with an acid. A gas is also produced. Name this gas.
A
hydrogen
