Nane: Class:
Index:
1) a) Fill in the blanks with the most suitable word. [7 marks].
All substances are made up of small particles, which can be atoms or molecules, that are
constantly (A)
Temperature is the average amount of energy of motion in each
particle of a substance. It is a measure of how (B).
or (C).
a
substance is. Temperature is usually measured with a (D).
It is a thin glass
​

A. moving

B. hot

C. cold

D. thermometer.

Explanation:

An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such determines or defines the structure of a chemical element.

Generally, atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.

All chemical substances comprises of small particles, which may either be atoms or molecules, that are constantly moving or in a state of motion.

Temperature can be defined as a measure of the degree of coldness or hotness of a physical object. It is measured with a thermometer and its units are Celsius (°C), Kelvin (K) and Fahrenheit (°F).

Generally, the temperature of a body or substance is usually measured with a thermometer. It is a thin glass having a bulb on one of its end and typically contains either colored alcohol or mercury.