Atoms and Molecules Flash Cards

Unit 7 > Science > Class 10 > Samacheer Kalvi - English Medium

37 cards in this set.

Mode

Which of the following has the smallest mass?

b. 1 atom of He

Which of the following is a triatomic molecule?

c. Carbon dioxide

Th e volume occupied by 4.4 g of CO2 at S.T.P

b. 2.24 litre

Mass of 1 mole of Nitrogen atom is

d. 14 g

Which of the following represents 1 amu?

c. 1/12th of the mass of a C-12 atom

Which of the following statement is incorrect?

c. One mole of hydrogen gas contains Avogadros number of atoms.

The volume occupied by 1 mole of a diatomic gas at S.T.P is

c. 22.4 litre

In the nucleus of 20Ca40, there are

b. 20 protons and 20 neutrons

The gram molecular mass of oxygen molecule is

c. 32 g

1 mole of any substance contains ____ molecules.

a. 6.023*10^23

Atoms of different elements having _ mass number, but __ atomic numbers are called isobars.

same, diffrent

Atoms of different elements having same number of ___________ are called isotones.

neutrons

Atoms of one element can be transmuted into atoms of other element by ________

arificial transmutation

The sum of the numbers of protons and neutrons of an atom is called its __________

mass number

Relative atomic mass is otherwise known as __________

standard atomic weight

Atoms of different elements having _ mass number, but __ atomic numbers are called isobars.

same, diffrent

Atoms of different elements having same number of ___________ are called isotones.

neutrons

Atoms of one element can be transmuted into atoms of other element by ________

arificial transmutation

The sum of the numbers of protons and neutrons of an atom is called its __________

mass number

Relative atomic mass is otherwise known as __________

standard atomic weight

The average atomic mass of hydrogen is ___________ amu.

1.0079

I f a molecule is made of similar kind of atoms, then it is called ____________ atomic molecule.

homo

The number of atoms present in a molecule is called its ____________

atomocity

One mole of any gas occupies ________ ml at S.T.P

22400 (or) 22.4 litre

Atomicity of phosphorous is ___________

4 8 g of O2

0.25 moles

4 g of H2

2 moles

52 g of He

13 moles

112 g of N2

4 moles

35.5 g of Cl2

0.5 moles

Two elements sometimes can form more than one compound.

TRUE

Noble gases are Diatomic

FALSE ( Noble gases are monoatomic)

The gram atomic mass of an element has no unit

FALSE ( The gram atomic mass of an element is exposed in grams)

1 mole of Gold and Silver contain same number of atoms

TRUE

Molar mass of CO2 is 42

FALSE ( Molar mass of CO2 is 44g.)

(A): Atomic mass of aluminium is 27.. (R): An atom of aluminium is 27 times heavier than 1/12th of the mass of the C 12 atom.

A and R are correct, R doesnt explains A.

(A): The Relative Molecular Mass of Chlorine is 35.5 a.m.u... (R): Reason: The natural abundance of Chlorine isotopes are not equal.

A and R are correct, R explains the A.

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Atoms and Molecules Flash Cards

Unit 7 > Science > Class 10 > Samacheer Kalvi - English Medium

37 cards in this set.

Mode Memorize Learn

Which of the following has the smallest mass?

b. 1 atom of He

Which of the following is a triatomic molecule?

c. Carbon dioxide

Th e volume occupied by 4.4 g of CO2 at S.T.P

b. 2.24 litre

Mass of 1 mole of Nitrogen atom is

d. 14 g

Which of the following represents 1 amu?

c. 1/12th of the mass of a C-12 atom

Which of the following statement is incorrect?

c. One mole of hydrogen gas contains Avogadros number of atoms.

The volume occupied by 1 mole of a diatomic gas at S.T.P is

c. 22.4 litre

In the nucleus of 20Ca40, there are

b. 20 protons and 20 neutrons

The gram molecular mass of oxygen molecule is

c. 32 g

1 mole of any substance contains ____ molecules.

a. 6.023*10^23

Atoms of different elements having _______ mass number, but ________ atomic numbers are called isobars.

same, diffrent

Atoms of different elements having same number of ___________ are called isotones.

neutrons

Atoms of one element can be transmuted into atoms of other element by ________

arificial transmutation

The sum of the numbers of protons and neutrons of an atom is called its __________

mass number

Relative atomic mass is otherwise known as __________

standard atomic weight

Atoms of different elements having _______ mass number, but ________ atomic numbers are called isobars.

same, diffrent

Atoms of different elements having same number of ___________ are called isotones.

neutrons

Atoms of one element can be transmuted into atoms of other element by ________

arificial transmutation

The sum of the numbers of protons and neutrons of an atom is called its __________

mass number

Relative atomic mass is otherwise known as __________

standard atomic weight

The average atomic mass of hydrogen is ___________ amu.

1.0079

I f a molecule is made of similar kind of atoms, then it is called ____________ atomic molecule.

homo

The number of atoms present in a molecule is called its ____________

atomocity

One mole of any gas occupies ________ ml at S.T.P

22400 (or) 22.4 litre

Atomicity of phosphorous is ___________

4

8 g of O2

0.25 moles

4 g of H2

2 moles

52 g of He

13 moles

112 g of N2

4 moles

35.5 g of Cl2

0.5 moles

Two elements sometimes can form more than one compound.

TRUE

Noble gases are Diatomic

FALSE ( Noble gases are monoatomic)

The gram atomic mass of an element has no unit

FALSE ( The gram atomic mass of an element is exposed in grams)

1 mole of Gold and Silver contain same number of atoms

TRUE

Molar mass of CO2 is 42

FALSE ( Molar mass of CO2 is 44g.)

(A): Atomic mass of aluminium is 27.. (R): An atom of aluminium is 27 times heavier than 1/12th of the mass of the C 12 atom.

A and R are correct, R doesnt explains A.

(A): The Relative Molecular Mass of Chlorine is 35.5 a.m.u... (R): Reason: The natural abundance of Chlorine isotopes are not equal.

A and R are correct, R explains the A.

Mode

Atoms of different elements having _ mass number, but __ atomic numbers are called isobars.

Atoms of different elements having _ mass number, but __ atomic numbers are called isobars.