Unit 4 - Atomic Structure

What are sublevels, or sub shells?

• they are protons

• they are orbitals

• they are neutrons

• they are in the neucleus

How many energy levels could an atom possibly have?

• 9

• 8

• 7

• 6

What is the greatest # of valence electrons an atom can have?

• 4

• 6

• 8

• 12

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A Lewis dot structure shows us the valence electrons an atom has available for creating chemical bonds

• true

• false

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why are valent electrons important ?

select 2

• they are involed in bomding

• they decrease electrons

• they increae the size of the nucleous

• they determine the reactivity of an element

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atoms are the basic unit of all _______

• electrons

• matter

• particles

• elements

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atom comes from the Greek word "atomos" which means _______ or indivisable

• undivided

• divided

• changed

• charged

Atoms are tiny invisible ________

• particles

• neucles

• electrons

• neutrons

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atoms of one element are all

• different

• the same

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atoms of different elements are

• different

• the same

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