A metal in group 1A.
What is an Alkali Metal?
A positively charged sub-atomic particle.
What is a Proton?
The ratio of the number of a certain item divided by the total number of items.
What is proportion?
A metal in group 2 A.
What is an Alkaline Earth Metal
A negatively charged sub-atomic particle.
What is an electron?
The composition of a compound is fixed.
What is the law of definite proportion?
An element of group 17 or 7A
What is a Halogen?
A neutral sub-atomic particle.
What is a neutron?
One column of the Periodic Table, these elements share properties.
What is a group/family?
The core of an atom.
What is the nucleus?
One row of the periodic table.
What is a Period?
Spaces inhabited by electrons around the nucleus.
What are orbitals?