Font size
WorksheetsIs Matter around us Pure (Elements & Compounds)
Total questions: 12
Worksheet time: 5mins
Elements and Compounds do not fall under the category of:
Pure Substances
Mixtures
Most prominent properties of metals are
Malleability
Sonorous
They are in variety of colours
lustrous
True or False:
Gallium and Cesium do not become liquid slightly above room temperature.
True
False
Who was the first person to give the experimentally useful definition of an element?
Antoine Laurent Lavoisier
Robert Boyle
True or False:
There are only two elements which remain liquid at room temperature.
True
False
How many elements are naturally occurring?
100
102
92
93
How many elements remain in the gaseous state at room temperature?
71
11
92
52
Assertion (A): Wood is not considered as a compound whereas Water is.
Reason (R): Water is contains more than two types of elements.
Both A and R are true and R is the correct explanation of A.
Both a and R are true but R is not the correct explanation of the A.
A is true and R is false.
A is false and R is true.
Assertion (A): After heating Iron fillings and Sulphur powder together, the substance so formed loses it's magnetism.
Reason (R): The substance so formed is a homogeneous mixture.
Both A and R are true and R is the correct explanation of A.
Both a and R are true but R is not the correct explanation of the A.
A is true and R is false.
A is false and R is true.
Of the four boxes shown, which one represents a model of elements only?
B and D
A, C and D
B and C
A and C
Which one of the following four statements is incorrect?
All elements are solid at room temperature.
Water is not an element.
Iron contains only one type of atom.
The element Mercury is a liquid at room temperature.
The diagram shows how some types of matter are classified.
The diagram is not complete.
Elements are often divided into two sub-groups.
What are these two sub-groups A and B?
Liquids and gases
Metals and non-metals
Non-metals and gases
Metals and liquids
