science words Crossword

A substance the dissolves in water? S
Like rock i cant dissolve in water I'm? I
I'm a good conductor of electricity. Gold, Iron and copper are types of me? M
I make it hard for heat or electricity to pass through me. I
We are not chemically bonded but are 2 or more of us in a solution
I have a PH of 2.5 . What am I?
I'm full of a substance, enough for metals to be extracted. What am I
I'm the smallest part of an element
My particles are are packed closely, i cant be squashed.
my particles can slip by each other and Water is 1 of me.
You used me to separate the colours in ink .
I'm bendable and can be formed into different shapes.