Question

classify the following into elements or compounds or mixture sea water, disteled water, simple salt, copper wire, natha lene balls

Answer 1

First we we know about Elements, Mixtures and Compound :

1) Element : Pure substance which consists of same type of atoms.

2) Mixture : Physical combination of different substances such that identities if it's components are retained.

3) Compound : Pure substance which consists of two or more type of atoms.

Now, Coming to the question.
a) Sugar :
Sugar is a compound as it consists of two or more type of atoms such as Carbon, Hydrogen and Oxygen.

b) Sea water is a mixture as it consists of different compounds /ions present in sea but they are not bonded to each other.

c) Distilled water :
Pure substance is a compound that consists of only Hydrogen and Oxygen which are covalently bonded to each other.

e) Copper wire is an element as it consists of only Copper metal.

f) Table Salt is a chemical compound consists of sodium and Chlorine ionically bonded to each other.

g) Silver plate is an element as it consists of one element I. e, Silver.

h) Naphthalene Balls:
Organic Compound consists of Carbon and Hydrogen.