Gr. 9 Unit B: Section 2

The most reactive of all metals

Ernest Rutherford is credited with discovering that atoms are mostly empty space and have a

These are the most reactive non-metals

Noble gases

What is the name of the element that is represented by the letter C

A column on the periodic table is called a

The top number in the following atomic notation represents

Which of the following letters best represents metals?

Rutherford used the solar system as a model for the atom. In this model the sun is the

Why was Lavoisier considered the "Father of Modern Chemistry?"

How many electrons does sulfur have?

Which of the following elements does not represent a metal?

Metalloids

The noble gases are

Elements of the same group have similar

In an atom, the number of protons is equal to the

A pure substance consisting of two or more kinds of atoms is considered to be