TOPIC 1 : INTRODUCTION OF CHEMISTRY QUESTIONS WITH ANSWERS ~ CHEMISTRY FORM 1

TOPIC 1 : INTRODUCTION OF CHEMISTRY QUESTIONS WITH ANSWERS ~ CHEMISTRY FORM 1

QUESTIONS:

1. multiple choice.

     Choose the most correct answer by writing its letter.

   (i) Both composition and decomposition of matter enable chemists to obtain _________ substances in our daily life.

    A: lighter

    B: heavier

    C: useful

    D: industrial

 (ii) Matter has ______ and occupies space.

    A: properties

    B: colour

    C: air

    D: mass

(iii) In chemistry subject we learn structure and __________of matter.

  A: properties

  B: composition

  C: decomposition

  D: components

 (iv) In agriculture, chemistry application helps to _______________

  A: get forests

  B: get market for crops and animal products

  C: investigate good crops and animals

  D: improve crops and animal production.

TOPIC 1 : INTRODUCTION OF CHEMISTRY QUESTIONS WITH ANSWERS ~ CHEMISTRY FORM 1

 (v) One of the following is not importance of chemistry.

   A: giving exparts such as doctors, teachers and nurses.

  B: enabling food processing and production.

  C: understanding language

  D: understanding properties of substances.

2. Matching items.

    Match items in list A with responses in list B

      List A

  (i) in agriculture

  (ii) in hospitals

  (iii) in industries

  (iv) composition of matter

  (v) decomposition of matter

        List B

A: chemistry help to get useful products from different raw materials

B: forms heavier and complex substance.

C: forms lighter and simpler substances

D: chemistry increases quantity and quality of crops and animal products.

E: chemistry provide exparts, tools and medicines for providing services to the patients.

3. Mention five substances which made as results of application of chemistry knowledge.

TOPIC 1 : INTRODUCTION OF CHEMISTRY QUESTIONS WITH ANSWERS ~ CHEMISTRY FORM 1

4. List down four importance of chemistry in our daily life

5. Outline areas where chemistry applied.

6. Define the following terms:-

     (a) chemistry

     (b) chemist

     (c) matter

     (d) composition of matter

     (e) decomposition of matter

7. The following represent composition and decomposition of matter as chemical processes in chemistry. State whether the process represent composition of matter or decomposition of matter.

  (i) AB ————-> A  +  B

 (ii) A  +  B ———> AB

(iii)  C———–> A  +  B

       ANSWERS:

1. (i) C(ii) D  (iii) A  (iv) D  (v) C

2. (i) D(ii) E  (iii) A  (iv) B  (v) C

TOPIC 1 : INTRODUCTION OF CHEMISTRY QUESTIONS WITH ANSWERS ~ CHEMISTRY FORM 1

3. Examples of substances which made as results of application of chemistry knowledge are

  -tooth paste

  -salt

  -fertilisers

  -dyes

  -soap

  -paints

  -cements

  -glues

  -paper

  -beverages

  -glasses

  -clothes

  -chalks

TOPIC 1 : INTRODUCTION OF CHEMISTRY QUESTIONS WITH ANSWERS ~ CHEMISTRY FORM 1

4. Importance of studying chemistry.

   (i) it helps in agricultural activities

   (ii) it helps in food processing and preservation

  (iii) it helps in production of medicines

  (iv) it helps in transport and communication since it applied in making tools used in transport and communication.

 (v) it helps in home care especially in cleaning.

(vi) it helps in construction activities. Eg using cement, paints and other materials of the like.

5. Areas where chemistry applied include

     -in industries

     For production of goods of different types.

    -homes

  For different activities such as cleaning and cooking.

    -schools

   By providing professional chemists.

    -farms(agriculture)

       By giving knowledge in identifying types soil and how to make a fertile and productive soil.

6. (a) Chemistry

    Is a branch of science which deals with the study of composition and decomposition of matter.

    Or

     Is a study of structure of matter and their properties.

TOPIC 1 : INTRODUCTION OF CHEMISTRY QUESTIONS WITH ANSWERS ~ CHEMISTRY FORM 1

   (b) chemist

         Is a person who studies chemistry.

   (c) matter

             Is anything which has mass and occupies space.

   (d) composition of matter

              Refers to the building up of matter.

   (e) decomposition of matter is breaking down of matter.

7. (i) and (iii) represent decomposition of matter.

     (ii) represents composition of matter