fernandowoof72
fernandowoof72 fernandowoof72
  • 03-05-2018
  • Chemistry
contestada

Which reaction results in only a physical change?
A. 2H2O(l) + electricity ® 2H2(g) + O2(g)
B. 2H2O2(l) ® 2H2O(l) + O2(g)
C. 2H2(g) + O2(g) ® 2H2O(l)
D. H2O(l) + heat ® H2O(g)

Respuesta :

madieh
madieh madieh
  • 03-05-2018
D will because water just turns from liquid to a gas by adding heat. That is a physical change. The other equations are chemical changes.
Answer Link

Otras preguntas

If the function h(x) represents the number of full hours that it takes a person to assemble x sets of tires in a factory, which would be an appropriate domain f
what are the landforms of vermont
how do I solve this proportion?
20% of my money is £2.55 What is 2/5 of it?
The number 6 is halfway between 4.5 and 7.5.Answer the missing numbers below.The number 6 is halfway between 2.8 and .......The number 6 is halfway between -12
What is the formula for the volume of a cuboid?
which of the following suffered most from DDT poisoning in the great lakes region
a piece of wood is 180cm long, Tom cuts it into three pieces in the ratio 2:3:4 Work out the length of the longest piece
What is HIV and the causes
copy this figure onto grid paper. draw line to divide the figure into 4 congruent polygons. how do you know the ploygons are congruent