ACIDS + ALKILIS Flashcards
1
Q
Name two examples of physical changes
A
Change of state or dissolving
2
Q
True or false, atoms being rearranged to make a different substance is a physical change
A
FALSE
3
Q
Name Two signs of chemical reactions
A
Bubbling or flames
4
Q
What is indicator used for
A
Finding out if a substance is acid or alkali
5
Q
What is the Ph scale?
A
A measure of how acidic or alkaline a substance is
6
Q
What colour is neutral?
A
Green ph 7
7
Q
What does irritant substances do?
A
Make the skin swell or itch
8
Q
What colour does red litmus paper turn in alkali
A
Blue
9
Q
What colour does blue litmus paper turn in acid
A
Red
10
Q
What is a universal indicator
A
An indicator that changes colour to show the PH of a solution. It is a mixture of dyes
11
Q
What’s a salt
A
An acid with a base, a metal element or a metallic compound
