When magnesium ion doesn't give any characteristics colour with the flame test as electronic transisitons do not give out visible light.
Answer:
lava is coming from the crust
Explanation:
volcano's explode with lava because the crust pushes it out
Answer: The energy transferred is known as kinetic energy, and it depends on the mass and speed achieved.
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
