NEW
Font size
Worksheetschemical and chemical substances
Total questions: 12
Worksheet time: 6mins
Substances that is made of only one kind of atom and cannot be broken down into simpler substances by chemical means is called?
Elements
Compounds
Mixtures
Symbols
What is the latin name of lead
cuprum
plumbum
ferrun
natrium
Two or more elements when combine together is called?
mixtures
elements
compounds
atoms
The modern system representation was given by?
Sir Jon Dalton
Charaka
Thomas Edison
Jons Jacob Berzelius
The number of atoms present in a molecule is called ?
atomicity
molecules
atoms
valency
What are the types of atomicity?
mercury
Monoatoic, diatomic, triatomic & tetratomic
celcius
kelvin
What is the balanced equation of : H2+O2 = H2O?
H2O
H2O2
2H2 + O2 = 2H2O
2H2
The combining capacity of an element is called ?
oxygen
nitrogen
monoatomic
valency
What is the symbol of gold/aurum?
Au
Al
Pb
Hg
What is the chemical formula of sodium chloride?
HCl
NaCl
HNO3
CaCO3
What is the valency of carbon?
2
1
4
3
Consist of two or more substances simply mixed together?
elements
compounds
valency
mixtures
