People
Vocabulary
Leveling Up
Elements
About Atoms
100

This person devised the Law of Multiple Proportions.

Who is John Dalton?

100

When an electron has too much energy it is______.

What is the excited state?

100

This sublevel can hold 2 electrons

What is the s sublevel

100
This element is listed as Ca on the periodic table.

What is calcium?

100

A positively charged particle on an atom.

What are protons?

200
This person made a theory stating that electrons move in a circular orbit (like planets)

Who is Bohr?

200

When an electron has the right amount of energy it is in _________ state.

What is the ground state?

200

This sublevel can hold 6 electrons.

What is the P sublevel?

200

This element is listed as Mg on the periodic table.

What is magnesium?

200

A negatively charged particle in an atom. 

What are electrons?

300

This person asked 3 questions: If we are made up of atoms, what hold us together? Why can't we see these atoms? And why don't we fall down like a bag of marbles?

Who was Aristotle?

300

It is impossible to see the exact position and velocity of an electron. 

What is Heisenburg's principle?

300

This sublevel can hold 10 electrons.

What is the d sublevel?

300

This element is listed as Ba on the periodic table

What is Barium?

300

A part of an atom with no charge. 

What are neutrons?

400
This person burned metals in the air, and weighed them before and after.

Who is Antoine Lavoisier?

400

An atom with the same of protons but different number of neutrons.

What is an isotope?

400

This sublevel can hold 14 electrons.

What is the f sublevel?

400

This element is listed as Se on the periodic table.

What is selenium?

400

The greek word for "atomos"

What is an atom?

500

This person theorized that electrons move in waves.

Who is Debregolie?

500

This is the smallest sub-atomic particle 

What is an electron?

500

This sublevel comes right after the f sublevel.

What is the g sublevel?

500

This element is listed as Zn on the periodic table 

What is zinc?

500

Atoms make _______ in the world. 

What is everything?

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