Answer:
ice, air, ducks and fabric
Explanation:
its common sense
Answer: the mass number is 51.9961 u.
Explanation: Basically your looking for the mass number of a ATOM of chromium now if you where looking for chromium and not the atom it's self it would be a different number which is 52-54
Answer:
17.8ml-15.6ml is 2.2 ml then convert to cm so 2.2cm^3
Before starting an experiment. ...
Wear the right kind of clothing and gear. ...
Be aware of safety equipment and where it's located. ...
Fill out your lab form as you conduct your experiment. ...
Complete your lab report as soon as possible after the lab.
Answer: True
Explanation: Every atom of the same element has the same atomic number of number of protons in its core. This is why chemists say that an atom is defined by its atomic number of the number of protons.
Unlike neutrons and electrons, you can't change protons. You can change the number of neutrons and it will still be the same element, but one is going to be a little bit heavier or a little bit lighter than another.
In addition, you can change electrons which creates
ions or charged atoms.
However, you can't change the protons.
For example, hydrogen has 1 proton in its nucleus no matter what and helium has 2 protons in its nucleus no matter what and so on.