give two examples to show that when substances are mixed ,it may result in a chemical or a physical change depending on the conditions
What is Reversible and Irreversible changes ?
Light from the Sun reaches us in nearly
A. 8 secs
B. 800 secs
C. 480 secs
give two examples to show that when substances are mixed ,it may result in a chemical or a physical change depending on the conditions
What is Reversible and Irreversible changes ?
Light from the Sun reaches us in nearly
A. 8 secs
B. 800 secs
C. 480 secs
D. 960 secs