Chemical Elements Flashcards
1
Q
What is the most important characteristic of an atom?
A
The positive charge of its nucleus being numerically equal to the ordinal number of the element.
2
Q
What is the distinguishing feature of an atom?
A
The value of the charge of the nucleus
3
Q
Wha is an element?
A
A certain type of atom with the same positive charge on the nucleus
4
Q
How many elements are currently known?
A
107 elements
5
Q
What did the Atomic and Molecular theory lead to?
A
It led to an easier way to explain basic concepts and laws of chemistry.
5
Q
What is an important characteristic of elements?
A
The abundance of them in the earths crust
5
Q
How are elements generally divided?
A
All elements are generally divided into metal and non-metals, albeit this division is conditional
