Matter
What is the smallest particle that made up matter?
atoms
Atoms consist of 3 sub-atomic particles. What are they?
proton, electron, neutron
What is the chemical formula of water?
H2O
What is the name of separation technique to separate sand from a mixture of sand and water?
Filtration
All metals have high melting points?
True / False
False
Mercury is a liquid metal.
positive
What is the chemical formula of carbon dioxide?
CO2
Name the separation technique where salt is separated from sea-water.
evaporation
When elements react together in a chemical reaction, it forms?
compounds
the charge of electron and neutron is?
electron : negative
neutron: neutral
What is the chemical formula of carbon monoxide?
CO
Name the separation technique where water is separated from seawater?
distillation
Only elements are present in Periodic Table.
(True / False)
True
The overall charge of an atom is
a) positive
b) negative
c) neutral
neutral
What is the chemical formula of table salt? Sodium Chloride.
NaCl
Name the separation technique where dyes are separated into its different components.
Chromatography