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Chemistry Matter and Atoms Quiz

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Questions and Answers

The atomicity of Ozone is ___

Reduced

Sublimation

Unaffected (correct)

Evaporation

Which of the following is a characteristic of matter in the solid state?

They are difficult to compress (correct)

They have no definite volume

They can translate

They highly energetic

In electrovalent combination, valence electrons are transferred and the atomic number is ___

Stabilized

Reduced (correct)

Sublimation

Distabilized

The equation H (aq) + OH →H2O(i) represents a ___

Hydration Signup and view all the answers

The relative molecular mass of the compound Ca(HCO3)2 is ___

122 Signup and view all the answers

What is the correct equation for the formation of sodium chloride?

Na + Cl → NaCl Signup and view all the answers

How many atoms are contained in 2g of hydrogen gas (H=1)?

6.02 x 10^23 atoms Signup and view all the answers

What is a substance called that changes red litmus paper to blue?

6.02 x 10^23 molecules base Signup and view all the answers

In the equation XNaOH + H2SO4 → Na2SO4 + 2H2O, what is the value of X?

1 Signup and view all the answers

What does the formula 3NH3 represent?

Ammonia Signup and view all the answers

What is the molecular mass of oxygen gas?

$O_2$ Signup and view all the answers

According to the kinetic theory, matter is:

Made up of particles in constant motion Signup and view all the answers

Calculate the volume of 2.5 moles of oxygen at s.t.p (molar volume of gas = 22.4dm3).

$56dm^3$ Signup and view all the answers

Which of the following elements is diatomic?

$H$ Signup and view all the answers

What does 'x' represent in the reaction $CaCO_3 + 2HCl → CaCl_2 + H_2O + x$?

$CO_2$ Signup and view all the answers