Relative atomic and molecular mass. Balan

Relative atomic and molecular mass. Balan

3rd - 4th Grade

11 Qs

quiz-placeholder

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Relative atomic and molecular mass. Balan

Relative atomic and molecular mass. Balan

Assessment

Quiz

Chemistry

3rd - 4th Grade

Medium

Created by

PONNAMBALAN Moe

Used 2+ times

FREE Resource

11 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Q1. The relative atomic mass is the average mass of an atom compared to

1/12 the mass of a carbon atom.

1/12 the mass of a carbon-12 atom

12 times the mass of a carbon -12 atom

12 times the mass of a carbon atom

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Carbon atom is chosen as element for the relative atomic mass because it

exist in large quantity in earth crust

reacts easily with all metals only

can be handled easily

has high melting and boiling point

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

3. Relative atomic mass of an atom is the

nucleon number of the atom

proton number of the atom

number of neutron of the atom

number of electron of the atom.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many nitrogen atoms makes up the same relative atomic mass as 1 iron atom? (R.a.m ; N=14, Fe=56)

1/4

4

42

70

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Relative atomic mass of Bromine is equal to...

(R.am.; O=16, N=14, Mg=24, Fe=56, Br=80)

5 nitrogen atoms

6 oxygen atoms

the sum of 1 magnesium and 1 iron atoms

the sum of 2 oxygen and 3 nitrogen atoms

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the relative formula mass of Pb(NO3)2.

(R.am.; O=16, N=14, Pb=207)

269

317

331

538

7.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Calculate the relative molecular mass of P2O5.

(R.am.; O=16, P=31)

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