"Základy chemických prvkov"

"Základy chemických prvkov"

1st - 5th Grade

10 Qs

quiz-placeholder

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"Základy chemických prvkov"

"Základy chemických prvkov"

Assessment

Quiz

Science

1st - 5th Grade

Practice Problem

Hard

Created by

Jana Vavreková

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Aké je skupenstvo fluóru za normálnych podmienok?

Plyn

Kvapalina

Tuhá látka

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ktorý halogén má červenohnedú farbu?

Jód

Bróm

Fluór

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Prečo sa jód sublimuje?

Má slabé medzimolekulové sily.

Má vysoký bod topenia.

Je veľmi reaktívny.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ktorý halogén je najreaktívnejší?

Fluór

Chlór

Jód

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Aká je elektrónová konfigurácia fluóru?

1s22s22p5

1s22s22p6

1s22p6

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Aký produkt vzniká pri reakcii chlóru s brómidom draselným?

KCl a Br2

KBr a Cl2

KCl a HBr

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Aký význam má kyselina chlorovodíková (HCl) v ľudskom organizme?

Podporuje trávenie.

Neutralizuje kyseliny.

Poskytuje energiu.

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