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The matter gains or loses mass (respectively).
The opposite of add is subtract.
You arrive at a resultant, the resultant depends on the operation carried out.
You add or subtract only the numerators
By the signs: 2+2(Add) 2-2(Subtract) +=add -=subtract
You add or subtract heat. An example is ice turns to water(solid to liquid) then water to stem are water vapor(liquid to gas)
How do you add or subtract energy?
Add heat.
The kinetic energy increases as you add more heat.
The matter gains or loses mass (respectively).
heat
wich one
when you add thermal energy to matter, the matter starts moving faster.
Antoms
the result is always even
If you add heat to matter, it can either get it hotter, or it can change the state of matter (for example, from solid to liquid).
does how many mean add or subtract