Matter consists on particles called
The parts of the atom are:
What type of charge do protons have?
What type of charge do neutrons have?
What contains the nucleus of an atom?
What moves around the nucleus of an atom?
How is organized the modern periodic table?

What is the atomic number of silver?
What is the atomic mass for silver?
How are periods arrange in the periodic table?
The alkali metal atoms at the far left of the periodic table are the
This elements are highly reactive, and they can be harmful or lethal to biological organisms in sufficient quantities. This reactivity is due to high electronegativity and high effective nuclear
What kind of bond forms when the difference between the electronegativities of two atoms is too small for an electron transfer to occur to form ions?
What kind of bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom?