Welcome to your Test in Science
1.
Which is considered as the fourth state of matter?
3.
The melting point is the temperature at which the solid form of a substance changes to
4.
The boiling point of water is -
5.
Solvent is a substance that dissolves another substance to form -
6.
Alloys are substance made of two or more &
7.
-------is the smallest unit of an element.
8.
Chemical used in photography-
9.
Which property of the atom has no electric charge-
10.
A proton carries positive charge and which property of atom carries negative charge?
11.
Who is associated with the description of atom?
12.
Which element is in the highest percentage (almost 78%) in the air?
13.
Percentage of carbon dioxide in air is -------.
15.
Who is associated with periodic table of elements?
16.
The periodic table lists the elements in order of --------------- atomic number.
17.
Atomic number is the number of --------- in nucleus.
18.
Amino Acids associated with-
19.
Brass is an alloy made of -
