Answer:
The periodic table is composed of seven horizontal rows or periods and is numbered between 1 and 7. There is a regular gradation in the properties of elements in the horizontal rows(periods) from left to right. The periodic table is composed of eight vertical columns or groups. They are numbered between 1 to 8.
Explanation:
Explanation:
Ionic bonds
Covalent bond
Vanderwaal force of attraction
The concentration of a solution can be changed by adding solute. More solute=more concentrated
Carbon (after hydrogen, helium and oxygen).
Jacques Cartier is the first explorer to reach North America
