Question

Define the following. 5m

a) Classification

b) Opaque objects

c) Reversible change

d) Periodic change

e) Miscible liquid​

Answer 1

Answer:

Classification, in biology, the establishment of a hierarchical system of categories on the basis of presumed natural relationships among organisms.

Opaque objects block light from traveling through them. Most of the light is either reflected by the object or absorbed and converted to thermal energy. Materials such as wood, stone, and metals are opaque to visible light

Periodic changes are changes that occur or repeated at regular intervals of time. Examples of periodic changes: Occurance of day and night. Heart beat

Miscible liquids : Those liquids which mix together in all proportions and form a single layer are called miscible liquids. Ex. Alcohol and water are miscible liquids because they mix together in all proportions and form a single layer on mixing.

Answer 2

Answer:

A)The science of biological classification is commonly called taxonomy.

B)Opaque objects block light from traveling through them. Most of the light is either reflected by the object or absorbed and converted to thermal energy. Materials such as wood, stone, and metals are opaque to visible light.

C)A reversible change is a change that can be undone or reversed.

D)Changes that repeat at regular intervals are called periodic changes.

E)Those liquids which mix together in all proportions and form a single layer are called miscible liquids.

Explanation:

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