Fill in the blanks: 3. ____________ (molecule/atom) is classified as the smallest unit of matter. 4. Equal volumes of all ____________ (gases/liquids), under similar conditions of pressure and temperature contains an equal number of molecules.’

Home » Fill in the blanks: 3. ____________ (molecule/atom) is classified as the smallest unit of matter. 4. Equal volumes of all ____________ (gases/liquids), under similar conditions of pressure and temperature contains an equal number of molecules.’

Fill in the blanks:
3. ____________ (molecule/atom) is classified as the smallest unit of matter.
4. Equal volumes of all ____________ (gases/liquids), under similar conditions of pressure and temperature contains an equal number of molecules.’

Chemistry | Class 10 | ICSE | Mole concept and Stoichiometry | Selina

Fill in the blanks:
3. ____________ (molecule/atom) is classified as the smallest unit of matter.
4. Equal volumes of all ____________ (gases/liquids), under similar conditions of pressure and temperature contains an equal number of molecules.’

Solution:

3. Atom

This is a fact the atom is the smallest unit of matter.

4. Gases

When equal volumes of different gases are mixed under the same conditions of temperature and pressure, Avogadro’s law states that they will have an equal number of molecules in each volume. This empirical relationship can be determined from the kinetic theory of gases under the assumption of a perfect (ideal) gas by applying the kinetic theory of gases to the situation.

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