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chemistry 1

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

#1
Front (Question)

an atom has two main parts

Back (Answer)

• nucleus (protons, neutrons) • electrons

#2
Front (Question)

protons do what

Back (Answer)

they identify the element

#3
Front (Question)

if protons = electrons

Back (Answer)

the atom is neutral

#4
Front (Question)

if protons do no equal electrons

Back (Answer)

the atom is an ion

#5
Front (Question)

atomic radius

Back (Answer)

distance from nucleus to outermost electron

#6
Front (Question)

atomic radius increases

Back (Answer)

down a group to the left

#7
Front (Question)

largest atom

Back (Answer)

bottom left

#8
Front (Question)

smallest atom

Back (Answer)

top right

#9
Front (Question)

atomic number

Back (Answer)

• number of protons • written as Z

#10
Front (Question)

atomic mass

Back (Answer)

protons + neutrons A = Z + N

#11
Front (Question)

atomic mas vs atomic weight

Back (Answer)

• atomic mass = single atom • atomic weight = avg of isotopes

#12
Front (Question)

isotopes

Back (Answer)

same element, different neutrons same prions, different neutrons, different mass

#13
Front (Question)

electrons

Back (Answer)

• are negative • very light • found in energy levels (shells)

#14
Front (Question)

1st shell

Back (Answer)

2 electrons

#15
Front (Question)

2nd shell

Back (Answer)

8 electrons

#16
Front (Question)

3rd shell

Back (Answer)

18 electrons

#17
Front (Question)

4th shell

Back (Answer)

32 electrons

#18
Front (Question)

valence electrons

Back (Answer)

• electrons in the outermost shell • control reactive and bonding • atoms want full valence shells

#19
Front (Question)

ionic bond

Back (Answer)

electron transfers (ions)

#20
Front (Question)

covalent bond

Back (Answer)

sharing electrons

#21
Front (Question)

polar covalent

Back (Answer)

electrons are shared unequally between the two atoms

#22
Front (Question)

negative ion (anion)

Back (Answer)

gain electrons

#23
Front (Question)

positive ion (cation)

Back (Answer)

lose electrons

#24
Front (Question)

ionic bonds form between

Back (Answer)

• oppositely charged ions • compound overall is neutral