Give Two Examples for the Following: Metals

Give two examples for the following: Metals

एक पंक्ति में उत्तर

Iron, silver, gold.

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अध्याय 3: Elements, Compounds and Mixtures - Exercise 3 (A) [पृष्ठ २४]

अध्याय 3 Elements, Compounds and Mixtures
Exercise 3 (A) | Q 2.1 | पृष्ठ २४

Define: Elements

What is meant by 2H and H₂

Tick (√) the correct alternative from the choice given for the following statement.
The compound used as common salt is

Tick (√) the correct alternative from the choice given for the following statement

A gaseous non-metal.

Complete the statement – an element is a pure substance made up of ____________ atoms.

Differentiate between homogenous & heterogeneous mixtures.

Match the separation of components in List I with the most appropriate process in List II.

List I	List II
1. Naphthalene from naphthalene & sodium chloride.	A: Separating funnel
2. Cream from milk.	B: Sublimation
3. Kerosene oil from kerosene oil & water.	C: Boiling
4. Lead nitrate from an aqueous solution of lead nitrate.	D: Centrifugation
5. Ammonia from an aqueous solution of ammonia.	E: Distillation

There are ______ number of known elements.

Name the element which is used for making computer chips.

Higher-Order Thinking questions:

Why is hydrogen considered an element?