List the three particles which make up matter.

State four hereditary features in humans.

State the energy transformation that takes place in each of the following activities:

1. dry cell in use;

2. solar panel in use;

3. electric stove in use;

4. hammering of a piece of metal.

State two ways each in which each of the following cultural practices is important in vegetable production:

1. staking;

2. pruning.

1. What is indiscriminate sex?

2. Give two reasons why teenagers indulge in indiscriminate sex.

Name two sources each of

1. natural light;

2. artificial light.

State three ways in which soil texture is important in crop production.

Write down the systematic name of each of the following chemical compounds:

1. FeS;

2. CO;

3. Cu₂O;

4. NaOH.

1. What do the symbols L, N and E represent in an electric plug?

2. What is the function of the fuse box in household electrical wiring?

Mention four classes of insect pest based on their feeding habits.

Classify the first four elements of the periodic table as metals and non-metals.

Name the three types of blood vessels in humans.

1. State the difference between organic fertilizer and inorganic fertilizer.

2. State two effects of inorganic fertilizer on the environment.

Classify the following substances as acids or bases:

1. unripe lemon juice;

2. wood ash;

3. liquid in a car battery;

4. bicarbonate of soda.

What is a fruit?

1. State two differences between a fruit and a seed.

State the effect of heat on each of the following substances:

1. plastics;

2. alcohol;

3. metal rod.

Classify the following chemical substances based on their uses under the headings as shown in the table below: N.P.K., Sodium hydroxide, Milk of magnesia, Paracetamol, Alcohol

State one use each of the following instruments used in the study of the weather:

1. rain gauge;

2. hygrometer;

3. anemometer.

Name two types of transistors.

1. Draw and label the circuit symbols of the transistors named in (i).

State three reasons why vegetable farming is important.