chemistry Flashcards
1
Q
how many electrons can fill each layer shell
A
2.n2
2
Q
period
A
how many shells and elements has outside the nucleus
3
Q
groups
A
tell you how many electrons in outer most layer/shell of atoms
4
Q
alkali metals
A
shiny, malleable very reactive explode when exposes to water stored in inert gas or oil electrons an outermost shell
5
Q
atomic number
A
number of protons +nucleus and electrons in outer shell layer
6
Q
zincing
A
propellors on boats coated in zinc perverts corrosion
7
Q
law of conservation mass
A
matter can neither be created nor destroyed
8
Q
matter
A
3 states
solid.liquid,gas
9
Q
hydrogen
A
lightest gas known to most explosive, flammable, colourless, odour less
10
Q
a.m.u ‘unified’
A
atomic mass unit or unified when the outcomes calm its mass is averaged at 1.67377x10-24 groups
