$CATEGORY: Science - TicTacLearn/2.Is Matter around us Pure?/2.Is Matter around us Pure?--Introduction

//Multiple Choice

What is the meaning of pure?
{
~A substance in which a high amount of adulteration is present.
=A substance in which no adulteration is present.
~A mixture of various substances.
~A substance that can easily be separated.
}

Choose the odd one out\:
{
~Tea
=Salt
~Diamond
~Gold
}

Which of the following is a pure substance?
{
~Milk
~Air
=Diamond
~Soil
}

Which will retain its composition at all temperatures and pressures?
{
~Vinegar
~Air
~Salad
=Sugar
}

//True or False

A pure substance consists of different types of particles.{F}

The impure substances are also known as mixtures.{T}

The particles of sodium chloride are present in the salt.{T}

Pure substances can be easily separated into their elements.{F}

The characteristic property of pure substance remains the same.{T}

The salt solution is a pure substance.{F}

The melting and boiling point of pure substances are fixed.{T}

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