Elements, Compounds & Mixtures

Substances which contain only one kind of particle,

be it atoms or molecules are called?

Which of these elements are usually soft in nature

• Metalloids

• Metals

• Non Metals

• Noble Gases

Compounds are pure substances formed by the chemical combination of two or more elements in a fixed ratio by ____

Which of the following chemicals is NOT used in agriculture

• insecticide

• fertilisers

• Hydrochloric acid

• fungicide

Symbol of the elements TIN

• Sb

• Zn

• Sn

• Tn

Lemonade is an example of?

• Heterogenous mixture

• Immiscible solution

• Homogenous mixture

• None of the above

Which method of seperation does the picture depict?

Principle of sedimentation & decantation

• different weights of components of a mixture, and the rate of wind.

• The solid component is heavier than the liquid and insoluble in the liquid.

• immiscible liquids seperate out in layers depending on their densities

• The process of increasing the rate of sedimentation of particles by adding some chemicals to it

By which method can cream be seperated from milk?

Write TRUE or FALSE:

All mixtures are homogenous in nature

T for true and F for false