Mid Topic Test Term 1 (Chemistry) Flashcards
(50 cards)
Proton (Charge)
Positive
Proton (Location)
Nucleus
Proton (Relative Size)
x 1836
Electron (Charge)
Negative
Electron (Location)
Electron Shells
Electron (Relative Size)
x1
Neutron (Charge)
0
Neutron (Relative Size)
x 1836
Neutron (Location)
Nucleus
Atomic Number
The number of protons and electrons in the atom.
Atomic Mass
The average number of protons and neutrons in the atom.
Element
A pure substance consisting only of one type of atom that all have the same numbers of protons in their nucleus. (Cannot be broken down into simpler substances).
Compound
A chemical substance is composed of many identical molecules composed of atoms from more than one element held together by chemical bonds.
Transition Metals
Properties:
- High melting and boiling points
- Solid at room temp
- Physical properties like metals
- Chemical properties like non-metals
Halogens
Properties:
- Highly Reactive
- Low Melting and Boiling Points
- Reactivity decreases down the table group.
- Exist as diatomic molecules.
Noble Gases
Properties:
- Unreactive non-metal gases
- Low density
- Non-flammable
- Low boiling points
- Bp and density increase down the group
Alkali Metals
Properties:
- Low melting and boiling points
- Very soft
- React with water to produce a metal OH- solution and hydrogen gas
- Reactivity increases down the group
- All are highly reactive
Alkaline Earth Metals
- All shiny
- Low melting and boiling points
- Reactivity increases down the group.
- React with halogens to form ionic salts.
- All apart from beryllium react with water to form OH-.
Alkali Metals trend
Increases reactivity down the group.
Alkaline Earth Metals trend
Increases reactivity down the group.
Halogens trend
Decreases reactivity down the group.
Metal Location on periodic table
Everything apart from the edge of Boron.
Non-metal location on periodic table
Edge of Boron to the rest of the right side.
Boron
Group 13 Period 2