Key Periodic Table information
Elements Atomic weight

Chemical reactions
perodic table
100

Why is the periodic table arranged the way it is?

The Periodic table is a chart that was arranged for chemical elements. Which is useful to tell the Elements and how they are listed in order of increasing atomic number.

100

Tin’s Atomic weight

118.69

100

what is happening when a liquid turns to a solid?

What is solidification?

100

If there is one proton in Hydrogen how many neutrons are there?

1

200

How many elements occur naturally on the Periodic table?

94

200

Atomic weight for Radon

222

200

What is happening when juice turns into a gas?

What is evaporation?

200

What is the largest number of protons on the periodic table?

118

300

An element's period number is the highest unexcited energy level for what?

Electron for whatever the element is

300

Lawrencium’s weight Atomic

260

300

What is a chemical reaction?

When something is changed chemically.

300

How many protons are in helium?

2

400

Explain the main difference between a modern periodic table and a Mendeleev's periodic table?

The difference between a modern periodic table and a Mendleev’s periodic table is Medeleev’s table arranged each elements by atomic weight

400

The Atomic weight Berkelium

247

400

What is one reason chemical reactions happen?

(Open ended question) but something left in the rain to long and rusts.

400

where do you find the number of protons on the periodic table?

What is an atomic number?

500

What element weighs the most in the periodic table?

uranium

500

Ytterbium’s Atomic weight

173.04

500

What are some ways to tell chemical changes have happened?

Change in smell, color, texture, etc.

500

How many liquids are on the periodic table?

2