Acids and alkalis Flashcards
1
Q
What colour does litmus paper go in acids? What colour does it go in alkalis?
A
It goes red in acids and blue and blue in alkalis.
2
Q
What is the word equation for a neutralisation reaction?
A
Acid + alkali —–> salt + water.
3
Q
Put these elements in order of reactivity.
Potassium, sodium, lead, zinc, gold, calcium, silver, copper, aluminium, magnesium,
A
Potassium, sodium, calcium, magnesium, aluminium, zinc, iron, lead, copper, silver, gold.
4
Q
What would the products be if you reacted a metal with an acid.
A
A salt and hydrogen.
5
Q
What do you call the test for hydrogen?
A
Squeaky pop test.
6
Q
What is the word equation for reacting a metal with an oxide?
A
Metal + oxide ——> metal oxide.
7
Q
Metal oxides are acidic. True or false?
A
False, they are alkaline.
