sometimes have the same thermal energy
A spoon is a measure of volume. Different substances have different densities so that the same volume of two substances can have very different masses.
There is no specific name for a polygon in which all the angles are different or where the sides are all different.
The result of mixing equal MASSES of water at different temperatures will be the mean of the two temperatures. Unless you are being very sophisticated and are taking the thermal expansion into account, the same will apply to volumes.
Neither does. They're equal masses.
The answer depends on what the numbers measure. If they are the masses of equal volumes of substances, then the substance with mass 0.8 is denser. On the other hand, if the numbers refer to the volumes of equal masses of two substances, then the substance with volume 0.7 is denser.
NO
different equal
substances
substances
substances
Yes, in a chemical reaction matter (mass) can not be crated or destroyed).
Equal masses will have equal inertia.
when you have two different forms of an atom with different masses, it's called an isotope of the atom.
Other things being equal, yes; in general, no. The mass also depends on the density.
No
Their volumes are equal. But their colors, weights, masses, viscosities, and nutritional contents are different.
The masses are equal.The volumes are different.The values are different.