Overall science study Flashcards
(28 cards)
Atom
Basic units of matter
Element
A substance that cannot be broken down into another substance
Proton
A subatomic particle with a positive electric charge. In the nucleus
Protons mass
1u
Neutron
A subatomic particle with no charge. In the nucleus
Neutrons mass
1u
Electron
A subatomic particle with a negative charge. Orbits around nucleus
Atomic number
How many protons are in the nucleus of an atom
Electrons mass
0.0005u
Mass number
neutrons + protons
Atomic mass
The total mass of particles of matter in an atom
Electron shell
Regions surrounding the atomic nucleus containing a specific number of electrons.
Periods
The horizontal row on the periodic table, there are 7 = same number of energy shells
Groups/family
The vertical columns on the periodic table. Group number = number of valence electrons
Which family of elements do we skip when labelling the groups of the periodic table?
Transition metals
Number of PROTONS
= ATOMIC NUMBER
Number of ELECTRONS
= ATOMIC NUMBER
Number of NEUTRONS
= ATOMIC MASS - ATOMIC NUMBER
Atomic Mass
Protons + Neutrons
Properties of metal
Lustrous, good conductors of heat and electricity, ductile and malleable
Properties of nonmetals
Brittle, dull and non-lustrous
Properties of metalloids
Britlle, solid, ductile, malleable
Where are noble gases
Group 8/18 on the table, all have full valence shells
Describe how subduction zones form
form when one tectonic plate is forced beneath another at a convergent boundary