Chemistry unit 2 acids and alkalis Flashcards
1
Q
What is a dye?
A
a substance that can change the colour of fabrics
2
Q
Which indicators turn red in acid?
A
Beetroot, red onion and litmus
3
Q
When using Universal indicator what colour is an acid?
A
reds and oranges
4
Q
When using Universal indicator what colour is an alkali or base?
A
blues and purples
5
Q
When using Universal indicator what colour is neutral?
A
Green
6
Q
What PH is a strong acid?
A
0 - 4
7
Q
What PH is a weak acid?
A
5 - 6
8
Q
What PH is a strong alkali?
A
11 - 14
9
Q
What PH is a weak alkali?
A
8 - 11
10
Q
What PH is neutral?
A
7
11
Q
Name an everyday acid you have at home
A
vinegar, lemon juice, apple juice
12
Q
Name an everyday alkali you have at home
A
bleach, toothpaste, baking soda
13
Q
name an everyday drink that is PH neutral
A
Water
