Page 1 - Home Assignment

SAI INTERNATIONAL SCHOOL
CLASS- VI
SUBJECT- CHEMISTRY
TOPIC –SEPARATION OF SUBSTANCES
SUB-TOPIC- CONCEPT MAPPING
HOME ASSIGNMENT

Concept- Pure substances and Mixtures

Q1. Is milk a pure substance or a mixture? 1
Q2 What is a mixture? 1
Q3 What are the components of soil as a mixture? 1
Q4 What are the two types of Pure substances? 1
Q5 Carbon dioxide is a pure substance. Explain. 1

Concept – Types of Mixtures

Q1. What are homogeneous mixtures? 1
Q2 What are heterogeneous mixtures?. 1
Q3 What is an alloy? 1
Q4 State one purpose for separating the components of a mixture 1
Q5 What type of mixture is a fruit salad? 1

Concept -Separation from solids from solid-solid mixtures

Q1. How are grains separated from the stalks of plants? 1
Q2 State one condition where we can separate a mixture by hand-picking. 1
Q3 In the process of winnowing, what is used to separate the heavier grains 1
from the lighter husk?
Q4 How are stones separated from sand in construction sites? 1

Q5 When can we use the process of magnetic separation for separation of 1
mixtures?

Concept – Separation of Solids from Liquids

Q1. Why is alum used for clearing muddy water? 1
Q2 Name two methods used for separating soluble impurities from water. 1
Q3 How can you obtain both pure water and salt from sea water? 1
Q4 What is decantation? 1
Q5 What is the difference between residue and filtrate? 1

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