What travels around the outside of the nucleus in an atom?
Electrons
Protons
Neutrons
The amount of electrons and protons are the same.
Name 2 differences between the modern periodic table and Mendeleev's periodic table.
The modern periodic table is in order of atomic mass, not atomic number.
Mendeleev's table has elements missing.
Mendeleev's table has 1 element per box.
The modern periodic table is arranged by atomic number, not atomic mass.
In the periodic table, the metals are on the left and the non-metals are to the right.
Metals are malleable and ductile.
Non-metals are shiny and conduct heat.
Select 4 options. Which of these is true about metals?
They conduct electricity.
They conduct heat.
They have a high density.
They are malleable.
They are brittle.
They have a low density.
They have a low meting point.
