Is flubber an example of matter why or why not

Flubber is fake rubber. (It rhymes)

And since it is a solid that takes up space, it is matter.

Flubber is an example of matter because it is a physical substance (solid) that occupies space.

Flubber is a gelatinous rubbery polymer that is produced by cross-linking a boron compound with polyvinyl alcohol (PVA).  

A matter is any physical substance that occupies space and has inertia. Matter is composed of many types of particles that have mass and sizes and it can exist in different states such as solid, liquid and gas.

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms