false
Theoretically, chemical equations are reversible but in reality this is not true. Combustion is not normally written as a reversible reaction unless in an extreme hypothetical sense. Generally, one cannot tell if a chemical equation is reversible. It is a matter of experience and study.
True
Yes it does because relation of the chemical persist in one of the category's .
Melting is a physical property.Any thing is a physical property if it can be reversed but a chemical property can't.For e.g If you melt ice it will become water but still you can freeze it and form ice again. * * * * * Not true. Many chemical reactions are reversible.
It is something that can be seen, touched, tasted, smelled, or observed in some way.
What we learn can seldom be unlearned
true
The majority of older people say that they are seldom bored is true.
it is true that the majority of old people say that they are seldom bored.
True
No. Atoms can gain and lose electrons but seldom gain or lose protons.
.
True
True
This is a true statement. See the related link for more information about the movement patterns of North America's major air masses.
Yes. It is true. Truer words are seldom either written or spoken.
True