Chemistry Flashcards
How many neutrons does Lithium have
7 Li
3
4
How many sub atomic particles does Lithium have
7
How many electrons and protons does Lithium have
3
How do you draw the atomic structure of Lithium.
protons and neutrons in small circle in the middle. Electrons on the outer shells. 8 electrons on a circle only
What is an electron
A subatomic particle with a charge of negative electricity found in all atoms and acts as the primary carrier of electricity in solids.
What is a neutron
A subatomic particle found in the nulceus of all atoms except for that of a simple hydrogen.
What is a proton
A subatomic particle found in the nulceus of every atom.
What are the three signs of a chemical reaction
Temperature change
Gas produced
Colour change
What is a molecule
Two or more atoms joined together
What are group 0 elements called
The Noble gases
What is chromatography
A technique for seperating mixtures into their components in order nto analyse/identify/purify and or quantify the mixture of components.
What is distillation
Seperation of liquids with different boiling points.
