Not all of the elements would burn and so it became a useless test

It become more expensive to purchase the elements

The elements started to have a flame color that was so similar, you couldn’t tell them apart

The elements became more and more rare and people didn't want to burn them for nothing

Helium

Hydrogen

Cesium

Barium

Had the same atomic mass

Had its own type of atom

Could never lose electrons

Had the same atomic number

Were completely unique

Had repeating similar properties

Would shift based on its mass

Could change at random

A Puzzle

A card game

A Chart

A textbook

Families going up and down, and increasing mass from left to right

Increasing mass going down and families going across

Discover electrons

Discover protons

Predict missing elements

Discover the contents of the nucleus

Even the most brilliant people have to try and try and try in order to come to the big breakthroughs that they do, and it should encourage us not to give up in our pursuit of truth.

Answers are always easy to find

Scientists are always brilliant and so it is always easy for them

Make a new row for it

Make a new column for it

Ask the scientist to double check his work, and Mendelev correctly predicted there was an arithmetic error

Predict the particles it would contain

Neutron gasses

Night Gasses

Noble gasses

Native gasses