Hoofstuk 5- Sure En Bassise Flashcards

1
Q

Wat is pH

A

‘n Maatstaf van hoe suur of alkalies ‘n stof is

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2
Q

Wat is sure, neutrale stowwe en basisse

A

Suur- Stowwe met ‘n pH waarde kleiner as 7

Neutraal- Stowwe met ‘n pH gelyk aan 7

Basisse- Stowwe met ‘n pH groter as 7

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3
Q

Noem die eienskappe van sure

A

Bitter of suur smaak

Sure is bytend, so dit kan materiale wegvreet of jou vel en oë brand

Dit is oplosbaar in water en vorm waterstofione

Kan ‘n basis neutraliseer

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4
Q

Wat is die eienskappe van basisse

A

Voel seperig of glad

Nie metale en organiese stowwe los daarin op, daarom word dit baie gebruik vir skoonmaakmiddels

Dit kan oplos in water en vorm hidroksiedione

Dit kan ‘n suur neutraliseer

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5
Q

Wat is indikators

A

‘N stof wat aandui of ‘n stof suur, alkalies of neutraal is deur van kleur te verander

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6
Q

Ken die indikators wat gehilite is op tabel onder op bladsy 55

A
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7
Q

Wat is 3 voorbeelde van sterk sure wat in ‘n laboratorium gebruik word

NB

A

Soutsuur- HCl

Swawelsuur- H²SO⁴

Salpetersuur- HNO³

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