Atomic Structure & Periodic Table Flashcards
What are all substances made up of?
Atoms
What do the following symbols stand for (s), (l),(g)?
Solid, Liquid and Gas
What is the name of two or more substances that are not chemically combined together?
Mixture
What is the name of two or more substances that are chemically combined together?
Compound
What is the name for a material that is made up of only 1 type of atom?
Element
What process is used to separate liquids at different boiling points?
Fractional distillation
What process is used to separate a liquid and an insoluble solid?
Filtering
What process is used to detect the different dyes in food colourings?
Chromatography
Who came up with the idea of the ‘Plum Pudding’ model?
JJ Thompson
Which scientist proved that there was a dense positive nucleus?
Ernest Rutherford
What is the name of the negative subatomic Particle?
Electron
What is the name of the positive subatomic Particle?
Proton
What is the name of the neutral subatomic particle?
Neutron
What does the Atomic Number of an atom show?
The number of protons
What is the atomic mass number sum of?
The number of protons and neutrons
What do you call and atom of the same element with different numbers of neutrons?
Isotope
What is the name of a charged atom?
Ion
What is the name of group 0?
Nobel gasses
What is the name of group 1?
Alkali metals
What is the name of group 7?
Halogens
What gas is formed when an alkali metal reacts with water?
Hydrogen
How does the reactivity of the halogens change as you go up the group?
They become more reactive
How does the reactivity of the alkali metals change as you go down the group?
They become more reactive
How many electrons are on the outer shell of group 1 metals?
1 electron
