WorksheetsScience Chemistry chapter 3 NCERT
Total questions: 20
Worksheet time: 14mins
All matter is made up of small particles called ________
Atoms
Molecules
Element
Compound
Matter exists in three states- ______,_______,________
Solid, Liquid, Gas
Element, compound, mixture
Solid, Elements, Gas
Solid , mixture, compound
An ________ is a pure substance which is made up of atoms of same kind
Compound
Mixture
Element
A ________ is a pure substance which is made up of molecule of same kind
Compound
Mixture
Atom
Element
Chemical formula of potassium is _____
P
K
Po
H
The chemical formula of Acetate
No3
CH4 COO
CH3COO
PO4
Chemical formula of Copper, Gold, Silver
Copper- Cu, Gold- Au,. Silver- Ag
Copper- Co, Gold- Gd,. Silver- S
Copper- Po, Gold- Gu ,. Silver- Sl
Chemical formula of Bromine
Bro
Bm
Br
H
Chemical formula of magnesium with ions
Mg²+
Mg⁴–
Ms²–
Chemical formula of chloride
Cl–
Cho–
O²
The process in which a chemical change cause one substance to change into another is called a (a)
Substance which undergo a chemical change in a reaction are called the_________ and whereas the new substance which are formed are called the__________
(a)
A chemical reaction in which two or more substance combine to form a new substance is called a (a)
A chemical reaction in which more or mare than one product is obtained from a single reactant is called a
(a)
A chemical reaction in which one element displaces another in a compound is called a (a)
A chemical reaction between an acid and a base is called a
(a)
Representation of a chemical reaction using symbols and formulae of substance involved in the reaction
(a)
Mixture is not a _______ substance
Pure
Element
Compound
Formula of sodium chloride is written as ClNa
True
False
Magnesium hydroxide is an acid
True
False
