Chemical reaction Flashcards
(7 cards)
1
Q
What is a chemical reaction?
A
When some substances are mixed together they change and form a new substance or material.
2
Q
Name one chemical reaction
A
Rusting, burning wood etc
3
Q
Name one example for an every day chemical reaction
A
When builders mix cement powder,with sand, water and limestone they make a new material called concrete
4
Q
When we heat wood it reacts with the air, what is the substance made?
A
Ash
5
Q
Change of state is a physical process, true or false
A
True
6
Q
Is rusting a chemical reaction?
A
Yes
7
Q
Arun says that when you mix two substances together is called physical process. Is arun correct?
A
No
