Answer:
Ans. C. physical change
Explanation:
Physical: boiling and melting are physical changes. When water boils no bonds are broken or formed
Answer and Explanation:
(a) 
: its chemical name is sodium sulfate in which sodium is present as 
and sulfate is present as 
(b) 
: Its chemical name is copper nitrate which is a inorganic compound which is mostly crystalline in nature
(c)
: Its chemical name is iron carbonate or ferric carbonate
In Thomson's experiment, he showed that an electrical current can be made to flow from a positive site to a negative site.
Answer:
Wet climates obviously have more water than driers climates. Metals, when subject to water have the tendency to oxidize rust. Therefore, if water is barely present in a climate, then oxidation is also least likely to occur.
Explanation:
Learnt it from reading a book
