science chem Flashcards by isabella isabella

Q

what is the importance of the periodic table

A

it predicts all the chemical elements ever

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Q

what do electrons in the same shell have in common

A

they all have the same amount of energy

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Q

whats an example of a sumbtamic particle

A

electron

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Q

what might happen if the strong force didn’t exist

A

atomic nuclei would fly apart

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Q

what two particles exist within an atomic nucleus

A

protons and neutrons

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Q

what is the atomic number mean

A

the amount of protons

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Q

how are molecules different from atoms

A

they consist of several atoms bonded tg

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Q

how is a compound different from a mixture

A

mixtures are physical, compounds through chemical

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Q

what happens during chemical reaction.

A

atoms or two elements bond together

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Q

where can protons be found

A

inside the atomic nucleus

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Q

hydrogen

A

H

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Q

helium

A

He

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Q

lithium

A

Li

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Q

beryilum

A

Be

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Q

boron

A

B

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Q

carbon

A

C

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Q

nitrogen

A

N

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Q

oxygen

A

O

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Q

flurine

A

Fe

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Q

neon

A

Ne

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Q

sodium

A

Na

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Q

magnesium

A

Mg

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Q

aluminum

A

Al

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Q

silicon

A

Na

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phosphorus

P

sulphur

S

chlorine

Cl

argon

Ar

pottasium

K

calcium

Ca

coppor

Cu

maganese

Mn

iron

Fe

zinc

Zn

silver

Ag

tin

Sn

iodine

I

barium

Ba

tungstene

W

gold

Au

mercury

Hg

noble gas

there own form. do not form bonds

lead

Pb

atoms that bond with another atom

molecule

N2

nitrogen gas

O2

oxygen gas

H2

hydrogen has

molecule of elements meaning

when atoms bond with the same atom

example of molecule of elements

oxygen gas 02

can noble gases bond

no

example of molecules of compounds

H20

element

one type of atom

molecule

when atoms bond

compound atom

when 2 or more different atoms bond together

what elements have not got the first letters

sodium, potassium, iron, silver, tin, tungstene, gold, mercury and lead

H

hydrogen

He

helium

Li

beryllium

B

boron

C

carbon

N

nitrogen

O

oxygen

F

fluoride

Ne

neon

Na

sodium

Mg

magnesium

Al

aliminium

Si

silicon

P

phosphorus

S

sulfur

CI

chlorine

Ar

argon

K

potttasium

Ca

calcium

Cu

copper

Mn

magnese

Fe

iron

Zn

zinc

Ag

silver

Sn

tin

I

iodine

Ba

barium

W

tungsen

Au

gold

Hg

mercury

Pb

lead