Answer:
Physical.
Explanation:
Nothing changes in a chemical state just adding hot air to a balloon.
If the number of neutrons are changed in an atom, it makes an isotope of that atom. In an atom number of protons is equal to number of electrons.
we can find the number of neutrons by subtracting atomic number from the mass of an atom.
here atomic mass of iron isotope is 55 and we know from periodic table that atomic number of iron is 26 so 55 -26 = 29
there are 29 neutrons.
Answer:
It can affect it by taking away mass and volume. Mass and Volume are the two factors that calculate and make up density
Explanation:
Mass/Volume =Density
If you were to change the mass or volume by changing the size or shape of an object, then this would affect the density.
Answer:
Dalton expressed his assumption in A Modern Model of Chemical Theory that atoms of various elements should be uniformly differentiated, based on their differing atomic weights. In doing so, he became the first scientist to explain atom behavior as regards weight measurement.
Explanation: