Atom Flashcards
What is an element ??
An element is a substance that cannot be broken down into simpler substances by chemical reactions
What is an atom?
An atom is the smallest part of an element that still has the properties of that element
Carbon??
A solid that can have 2 forms, grey graphite or pencil “lead” or the gemstone diamond! It is not a metal
Sulfur?
A yellow solid non metal, it makes matches and gunpowder
Iron?
A hard silvery/grey, solid, metallic element. It is very common, and used to make ships, cars , skyscrapers etc.
Silver?
A bright grey solid metal used to make jewellery and ornaments
Gold?
A heavy, precious yellow metallic element, used for jewellery
Sodium?
A soft, silver white metallic element that is very reactive! It is used in street lighting as it glows yellow when burned. It is mixed with Chlorine to make table salt.
Who is Robert Boyle?
Robert Boyle is an Irish scientist- the father of chemistry
What is a molecule?
It is the smallest part of an element or compound that can exist on it’s own.
Mixture??
A mixture consists of two or more different substances mingled with each other but not chemically combined.
E.g. Salad dressing is a mixture of oil and water
Compound?
A compound is a completely new substance with its own properties, it is formed when two or more elements are chemically combined ( usually by burning )
Example of elements?
Hydrogen, copper, sulphur, oxygen, nitrogen
Examples of compounds?
Water (h20), carbon dioxide (CO2), sodium chloride (NaCl), magnesium oxide (MgO), iron sulphide (FeS)
Example Of molecules
Hydrogen (H2) Water (H2O) Oxygen(O2) Chlorine(Cl2) Carbon dioxide(CO2)
