Flashcards

cgemistry

kaira ayo Inglês 15 flashcards

Flashcards do conjunto (15)

1what is an atom?Its the smallest part of an element
2what is an element?something made of one atom
3what is a compound?a substance that is chemically bonded with two
4relative charge nd mass of subatompic particlesmass: proton 1 , neutrons 1 , elctrons 0
charge: protons +1 , neutrons 0 , electrons - 1
5plum pudding modela ball of positive charge with negative electrons studded into it
6alpha scatteringatoms have dense nucleuses with a + charge
7atoms have no overall chargethe no. of protons and electrons are equal
8how large r atomsradius is about 0.1nm
9nucleus size copmaresd to tge rest f the atom1/10000
10isotopeatoms of the same element with a different number of neutrons
11abundancethe % of atoms in a sample with the specific masss
12rel atom mass of elementan average value fir the mass that takes account of the abundance of isotopes of element
13how is tgw mdrn prdc tablearranged in chemical properties and atomic number
14el similar chem propertiesbecause they hsve the same electrons in their outer shell
15organisationby the atomic weight