sci reviewer

The vertical columns of the PERIODIC TABLE are called?

• Period

• Groups

• Block

• Transition

One who formulated the law of octaves

When an atom loses or gains an electron it becomes an?

The charge of atom?

• Neutral

• Electron

• Ewan

Smaller unit of matter

Neutron number combined with proton no. Generally makes up the _?

Lithium, Potassium, Barium which is most reactive?

What type of change is solid to gas?

Who discovered the Periodic table?

What is Neutron?

• Positive

• Negative

• Both charge