y8 atoms + elementsss Flashcards
(24 cards)
Group 8 on periodic table
Noble gases
Group 7 on periodic table
Halogens
Alkali metals on periodic table
Group 1 apart from top
Atom
Smallest part of element that can exist
Lattice
Regularly arranged 3D array of atoms in solid
Molecule
Non metals chemically bonded together
Compound
Elements chemically bonded together
Element
Substance with only one type of atom
How to name compunds
Suffix -ide if metal + non metal (can be oxygen)
Suffix -ate if metal + non metal + oxygen
Mixture
Substances are present but not chemically bonded
Nucleus
Proton + neutron
Mass of proton
1
Mass of neutron
1
Mass of electron
0.005
Charge of proton
+1
Charge of neutron
0
Charge of electron
-1
Charge of electron allowed in each shell
2, 8, 8
Isotope
Number of proton and electron same, neutron different
Ion
Number of proton, neutron and electron all different
Atomic number
Number of protons (top)
Mass number
Number of protons + neutrons (bottom)