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Efnisheimurinn - 1. kafli

Authored by Þorbjörg Ólafsdóttir

Chemistry

8th - 10th Grade

Used 3+ times

Efnisheimurinn - 1. kafli
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18 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Efnum má skipta í tvo meginflokka, hrein efni og efnablöndur. Hreinum efnum má svo skipta í tvo flokka. Hvaða flokkar eru þetta?

Frumefni og efnablöndur

Efnasambönd og grunnefni

Frumefni og efnasambönd

Sameindir og frumeindir

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Mjólk er dæmi um?

Efnablöndu

Efnasamband

Frumefni

Hreint efni

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Gull er?

Frumefni

Efnasamband

Efnablanda

Misleitt frumefni

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Þegar klaki (ís) breytist í vökva kallast það?

Bráðnun

Gufun

Storknun

Þétting

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Þegar gufa breytist í vökva kallast það?

Bráðnun

Gufun

Storknun

Þétting

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Þegar vökvi breytist í gufu kallast það?

Bráðnun

Gufun

Storknun

Þétting

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Þegar vökvi breytist í fast efni kallast það?

Bráðnun

Gufun

Storknun

Þétting

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