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Vocabulary

100

Define atomic number.

1. The number of protons an element has

200

Define mass number

The sum of protons and neutrons. 

300

Define valence electrons

Electrons that are in the highest energy level (farthest from the nucleus) of an atom of an element 

400

Define atom

The smallest particle of an element that retains the properties of that element  (must say WHOLE definition) 

500

Define isotope

An atom that has a number of protons as the atomic number, but a different number of neutrons 

Atomic Influencers

100

1. Physicist from New Zealand observed that the positive charge is concentrated in the center of the atom. 

Rutherford

200

Philosopher who argued that all substances were built from only 4 elements.

Aristotle

300

He developed the first Atomic theory.

Dalton

400

He called the smallest, uncuttable or indivisible piece of matter atomos.

Democritus

500

The first model that explained and demonstrated how electrons behave.

Bhor

Atomic Structure

100

Which subatomic particle is negatively charged

Electron

200

Which subatomic particle has no charge?

Nuetron

300

The atomic number of oxygen is 8. How many electrons does an oxygen atom have

8

400

The atomic number of oxygen is 8. It has a mass number of 16. How any protons, neutrons and electrons does this atom have?

24

500

1. An atom of an element has a mass number of 38. It has 20 neutrons in its nucleus. How many protons does that atom have? 

18

Periodic Groups

100

Which group is most reactive and must be stored in oil or glass tubes?

Alkali Metals

200

Which group has 8 valence electrons and is least reactive?

Carbon

300

Which group is all odorless and colorless?

Noble Gasses

400

Explain why atoms that are closer together on the periodic table have similar properties.

1. They have the same number of valence electrons. 

500

Alkali metals are on the left side of the periodic table and Noble gases are on the right. What can you say about the properties of alkali metals and noble gasses?

1. alkali metals are very reactive (only 1 valence electron)  noble gasses are stable (8 valence electrons) 

Bonus

100

What is the Atomic Symbol for Iron

FE

200

Which Element has no Nuetrons

Hydrogen

300

English scientist observed through his experiment that all matter gives off small negatively charged particles that are smaller than an atom

Thomson

400

Who had a dream

 Dmitri Mendeleev

500

What is Coach Kaufmans sons name?

Wesley