Give two example of elements.

One Line Answer

Example: Hydrogen, Oxygen is made from atoms containing a single proton and a single electron.

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Chapter 3: Matter Around Us - Evaluation [Page 39]

Chapter 3 Matter Around Us
Evaluation | Q V. 9. | Page 39

Write true or false

A heterogeneous mixture has a uniform composition throughout the mixture

Match the columns.

column A	column B
1. to separate grain from chaff	a. filtration
2. to saparate sawdust from water	b. sedimentation and deeantation
3. to separate iodine from sodium chloride	c. winnowing
4. to separate iron fillings from sand	d.sublimation
5. it is used to separate sand and water	e maganetic separation
	f .handpicking

Give two applications of chromatography.

Define:

Atomicity

Mention three gaseous elements and write their molecular formulae

Name: Three different forms of carbon

Indicate whether the following statement is true or false:
Elements are made up of compounds

Tick (√) the correct alternative from the choice given for the following statement.
Sand is a compound of

Give three differences between elements & compounds with relevant examples.

Atoms: Fundamental particle of an element::______ : Fundamental particles of a compound.