Tag: mixtures: examples and properties

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Multiple choice chemistry separation of substances classification of mixtures mixtures: examples and properties types of solutions

Which of the following is not a property of a mixture?

  1. Mixtures have definite set of properties

  2. Components in mixture retain their original properties

  3. The parts of mixture can be separated by physical means

  4. Mixtures do not have a sharp melting or boiling point
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The important point regarding mixture is that it always retain the original property of its components, so mixture dont have any definite set of properties.

Multiple choice chemistry separation of substances classification of mixtures mixtures: examples and properties types of solutions

Which of the following is an example of mixture in which various constituents are mixed uniformly?

  1. Solution of salt in water

  2. Air

  3. Alloy

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Solution of salt in water, air, alloy are all examples of homogeneous mixture. They are formed by mixing different elements in to form a mixture which is in single state. Hence they are also called as homogeneous mixture.

Multiple choice chemistry separation of substances classification of mixtures mixtures: examples and properties types of solutions

What is a mixture?

  1. Substance with two or more different particles

  2. Substance that is insoluble

  3. Substance with a single homogenous particle

  4. None of above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A substance which contains two or more different particles is known as mixtures. Example: the Salt solution is made up of two components, salt and water. Therefore, the salt solution is a mixture.


Hence, the correct option is $A$

Multiple choice chemistry separation of substances classification of mixtures mixtures: examples and properties types of solutions

Which of the following is a mixture?

  1. Air

  2. Alloys

  3. Both A and B

  4. None of above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Air is a homogeneous mixture. However, the Earth's atmosphere as a whole is a heterogeneous mixture. Alloys are made when two or more metals are mixed together. They usually are homogeneous mixtures. Examples include brass, bronze, steel, and sterling silver.

Multiple choice chemistry separation of substances classification of mixtures mixtures: examples and properties types of solutions

In a mixture of kerosene and water, kerosene forms the:

  1. Lower layer

  2. Upper layer

  3. It mixes with water and forms no layer

  4. Data insufficient
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When two liquids do not mix, they form two separate layers and are known as immiscible liquids. These two liquids can be separated by using a separating funnel. It will separate the immiscible liquids into two distinct layers depending on their densities. The heavier liquid forms the lower layer while the lighter one forms the upper layer. Kerosene has lower density than water and hence forms the upper layer.

Multiple choice chemistry separation of substances classification of mixtures mixtures: examples and properties types of solutions

A mixture is a material system made up of two or more different substances which are mixed :

  1. chemically

  2. physically

  3. both a and b

  4. none of above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A mixture is a material system made up of two or more different substances which are mixed but are not combined chemically. A mixture refers to the physical combination of two or more substances on which the identities are retained and are mixed in the form of solutions, suspensions, and colloids.

Multiple choice chemistry separation of substances classification of mixtures mixtures: examples and properties types of solutions

Water is a ____.
Methane is a ____.

  1. Compound, element

  2. Element, mixture

  3. Element, compound

  4. Compound, compound
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Water and methane are both made up of two different elements. Water is made up of oxygen and hydrogen whereas methane consists of carbon and hydrogen. Compounds are substances that contain atoms of at least two elements chemically combined. Hence, water and methane are compounds.