Milline järgnevatest valikutest on kõige tähtsam laboris praktiliste tööde tegemise ohutuse tagamiseks?

G1A Keemia tunnikas (tunnid 1-3)

Quiz
•
Chemistry
•
10th Grade
•
Easy

Martin Tamm
Used 2+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kaitseprillide kandmine
Mobiiltelefoni kasutamine
Laboris söömine ja joomine
Juhiste mittejärgimine
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Milline järgnevatest ainetest võib tekitada keemilist põletust (ehk söövitust)?
Vesi
Vesinikkloriidhape
Lämmastiku gaas
Õli
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Mis on neutraalse lahuse pH?
0
7
14
1
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Milline järgnevatest indikaatoritest muudab lahuse värvust punaseks happelises keskkonnas?
Fenoolftaleiin
Metüüloranž
Bromotümoolsinine
Neutraalpunane
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Mida näitab see piktogramm?
Söövitav aine
Plahvatusohtlik aine
Kiirgusohtlik aine
Tuleohtlik aine
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Milline järgnevatest ainetes ei ole hape?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Milline järgnevatest ainetest on lahuses neutraalne?
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