Elements And Atoms
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What is an element?
An element is a substance that cannot be broken down further
Why do element have different properties?
Elements have different properties because they are made of different atoms
What is an Atom
The smallest particle of a chemical element that can exist
What are the only two elements which exist as liquids at room temp?
Mercury and Bromine
List is the 11 elements that exist as gases under normal conditions:
Helium. He Neon. Ne Argon. Ar Krypton. Kr Xenon. Xe Radon. Rn Carbon. C Nitrogen. N Oxygen. O Fluorine. F Iodine. I Chlorine. Cl
What are the properties of Sodium?
Sodium is a soft, silvery white metal with a melting point of 98 Celsius and a boiling point of 884 Celsius
What are the properties of Chlorine?
Chlorine is a yellow-green gas with a melting point of -101 Celsius and a boiling point of -34 Celsius
What is a Compound?
A compound is 2 or more different elements joined together.
What compound is formed between sodium and chlorine and what are the properties of this compound?
NaCl NaCl is a white solid with a melting point of 801 Celsius and a boiling point of 1420 Celsius.
What colours are produced when aluminium is heated?
Silvery White
What colours are produced when Calcium is heated?
Orange
What colours are produced when Copper is heated?
Green
What colours are produced when Lithium is heated?
Red
What colours are produced when Magnesium is heated?
White
What colours are produced when Sodium is heated?
Golden-Yellow
What colours are produced when Caesium is heated?
Blue
Hydrogen
H
Nitrogen
N
Calcium
Ca
Copper
Cu
Helium
He
Cobalt
Co
Gold
Au
Silver
Ag