Building vocabulary
from the list below, choose the term that best completes each sentence.
atomic mass unit (amu) electron
family group
neutron
nucleus
period v periodic table
proton
10. a(n) valence
is involved in the transfer or sharing of electrons.
11. a(n) protons is a positively charged particle in the nucleus.
12. an element's period is its row in the periodic table.
13. the central core of an atom is called the nucleus
14. a(n)
carries a negative electrical charge, and is located
outside an atom's central core.
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15. mendeleev was the first to arrange elements according to their properties in
a(n)
16. elements in a(n)
_ог
of the periodic
table have similar characteristics.
17. a(n) nechtron is a particle in the nucleus that has no charge.
18. scientists use the atomic mass to measure the mass of the particles
within the atom. unit

It's true it didin't work becouse britain continued trading with it's colonies and the system hurt economies of the countries that used it

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.

What formula  this one  (x_/