<span>When a substance changes from one state, or phase, of matter to another we say that it has undergone a change of state, or we say that it has undergone a change of phase. For example, ice melts and becomes water; water evaporates and becomes water vapor.These changes of phase always occur with a change of heat. Heat, which is energy, either comes into the material during a change of phase or heat comes out of the material during this change. However, although the heat content of the material changes, the temperature does not.</span>
Francium oxide Fr₂O
Francium, as well as sodium, is in 1A group. Its valency is equal to unit.
Answer:
It should be acetic acid.
Explanation:
When you have ionic bonds, the ionic bonds will always be water soluble; the polarity doesn't matter for this case.
Hydrogen is a
covalent bond. (A bond where one or more pairs of electrons are shared by two atoms)
Answer:
The independent variable is what you change in the experiment.
Explanation:
The independent determines the dependent variable.
