Heating Of Substances Flashcards
1
Q
What does iodine look like before/during and after heating?
A
- Large grey/black crystals
- Dark purple vapor
- grey solid forming on the outside of the test tube
2
Q
What does zinc oxide look like before/during and after heating?
A
- white powder (fine substance)
- pale yellow
- back to white
3
Q
What does copper sulphate look like before/during and after heating?
A
- bright blue crystals
- dirty white
- stayed dirty white
4
Q
What does cobalt chloride look like before/during and after heating?
A
- deep red crystals
- began to boil and turned light blue
- bright blue crystals
5
Q
Wheat does potassium permanganate look like before/during and after heating?
A
- dark purple crystals
- purple vapor
- darker crystals on the side of the test tube
6
Q
What does magnesium look like before/during and after heating?
A
- grey shiny strip
- bright white flame
- white powder
7
Q
What happens to copper before/during and after heating?
A
- reddish brown
- green + purple flame when lit
- same color but patches of black and grey
8
Q
What is a synthesis reaction?
A
They are chemical reactions in which two or more substances react to form a new product.
9
Q
What is a decomposition reaction?
A
Chemical reactions in which a reactant breaks down into two or more products.
