Chemistry reactions and matter Flashcards
1
Q
What makes new substances- chemical or physical changes?
A
Chemical
2
Q
Are acids or alkalis corrosive?
A
Both
3
Q
What shows if a solution is acidic or alkaline?
A
An indicator
4
Q
What is the pH of a string acid?
A
1
5
Q
What pH is a neutral solution?
A
7
6
Q
What colour does universal indicator turn in an alkaline solution?
A
Purple or blue
7
Q
what element do all Acids contain?
A
Hydrogen
8
Q
What is a base?
A
a substance that neutralises an acid
9
Q
What is an alkali?
A
A soluble base
10
Q
What do all alkalis contain?
A
Hydroxide group or OH
