It is explanation of sublimation
New substances are NOT formed in which of the following changes?
a) physical change
b) chemical change
c) biological change
d) both a and b
What happens to the ice when it melts?
a) it converts into gas(vapors)
b) it convert into liquid water
c) it converts into plasma
d) all of these
Which of the following is/are physical change/s?
a) cutting
b) grinding
c) grinding
d) all of these
Which of the following is/are physical change/s?
a) mixing
b) shredding
c) freezing
d) all of these
Which of the following is/are physical change/s?
a) breaking glass
b) folding paper
c) sublimation
d) all of these
Explanation: conversion of a substance from the solid to the gaseous state without its becoming liquid. An example is the vaporization of frozen carbon dioxide (dry ice) at ordinary atmospheric pressure and temperature.
Which of the following is NOT an example of physical change?
a) filling up a balloon with air
b) freezing of water
c) photosynthesis
d) boiling of water
What does it means? Irrelevant explaination
by at 2024-08-10 22:24:56