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តេស្តសមត្ថភាពសិស្ស

Authored by Sovandy Chea

Chemistry

4th Grade

Used 3+ times

តេស្តសមត្ថភាពសិស្ស
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5 questions

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1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

១.តើមួយណានិមិត្តសញ្ញសូដ្យូម?

ក.Na

ខ.Ba

គ.Ca

ឃ.Al

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

២.តើនិមិត្តសញ្ញាមួយណាជារ៉ាឌីកាល់ កាបូណាត?

ក.CO2-3

ខ.PO3-4

គ.Al

ឃ.Ba

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

តើសមីការមួយត្រឹមត្រូវចូរជ្រើសរើសសម្លើយ១ឱ្យបានត្រឹមត្រូវ?

ក. Ca + O2 CaOCa\ \ \ \ \ +\ \ \ O_2\ \ \longrightarrow\ \ CaO

ខ. 2Ca + O2 2CaO2Ca\ \ \ \ +\ \ O_2\ \ \ \longrightarrow\ \ \ 2CaO

គ. Al + 3NO3 Al(NO3)3Al\ \ \ \ +\ \ \ 3NO_3^-\ \ \ \longrightarrow\ \ \ Al\left(NO_3\right)_3

ឃ. K + Cl2 KClK\ \ \ \ \ +\ \ \ Cl_2\ \ \ \longrightarrow\ \ \ KCl

4.

MULTIPLE SELECT QUESTION

1 min • 1 pt

តើចម្លើយសមីការមួយណាត្រឹមត្រូវ?

. Na + KCl NaCl + Kក.\ Na\ \ \ +\ \ KCl\ \ \ \longrightarrow\ \ NaCl\ \ \ +\ \ K

.Al + Ca(NO3)2 Al(NO3)3 + Caខ.Al\ \ \ \ +\ \ \ Ca\left(NO_3\right)_2\ \ \longrightarrow\ \ \ Al\left(NO_3\right)_3\ \ \ +\ \ Ca

.2Ag + PbCO3 Ag2CO3 + Pbគ.2Ag\ \ \ +\ \ PbCO_3\ \ \ \longrightarrow\ \ Ag_2CO_3\ \ \ \ +\ \ \ Pb

. Fe + Al Al + feឃ.\ Fe\ \ \ +\ \ \ Al\ \ \ \longrightarrow\ \ \ Al\ \ \ +\ \ \ fe

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

តើមួយណាសមីការសំយោគទឹក?

ក. 2H2 + O2 2H2O2H_2\ \ \ \ \ \ \ +\ \ \ \ O_2\ \ \ \ \longrightarrow\ \ \ 2H_2O

ខ. 2H2O 2H2 + O22H_2O\ \ \longrightarrow\ \ 2H_2\ \ \ \ \ +\ \ O_2

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