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40 Cards in this Set
- Front
- Back
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What is the nucleus made up off |
Protons and neutrons |
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Where are the electrons located in the atom |
The rings circling the nucleus |
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What is the radius of the atom |
0.1 nanometres |
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What is the radius of a nucleus |
1x10 to the power off -14 m |
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What is a nanometre in standard form |
1x10 to the power of -9 m |
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What is the relative mass and charge of a proton neutron electron |
Relative mass: charge 1:+1 1:0 0:-1 |
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What do atoms have that ions don't |
Same number of protons and electrons |
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What is the bottom number on an element |
Atomic number |
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Give the symbols for Oxygen Magnesium Iron |
O Mg Fe |
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What is an Isotope |
Different form of the same element, which has the same number of protons but different number of neutrons |
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What is the reaction for relative atomic mass of an element |
Relative atomic mass (Ar)= Sum of (isotope abundance x isotope mass number) / sum of abundances of all the isotopes |
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Copper has 2 stable isotopes. Cu-63 has an abundance of 69.2% and Cu-65 has an abundance of 30.8%. Calculate the relative atomic mass of copper to 1 decimal place |
Relative atomic mass= (69.2x63)+(30.8x65)/69.2+30.8= 4359.6+2002/100 = 6361.6/100 = 63.616= 63.6 |
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What is a compound |
A substance made up of atoms of at least two different elements, chemically joined together |
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What is an element |
A substance that is made up only of atoms with the same number of protons |
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How is a compound formed |
From a metal and a non-metal consists of ions |
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What compound would H2 + O make |
H2O |
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Methane burns in oxygen giving carbon dioxide and water What is the formula |
Methane+ Oxygen -> Carbon dioxide + water |
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Write the symbol equation for Magnesium + oxygen -> Magnesium oxide |
2Mg+ O2-> 2MgO |
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Balance this equation H2SO4+ NaOH -> Na2SO4 +2H2O |
H2SO4 +2NaOH -> Na2SO4 + 2H2O |
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How are mixtures easily separated |
Mixtures have no chemical bond |
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What equipment do you need for paper chromatography |
Filter paper Pencil Ink Beaker Solvent |
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Name the two ways to separate soluble solids from solutions |
Evaporation Crystallisation |
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What was J J Thompson theory called |
The plum pudding model |
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What is the plum pudding model |
J J Thompson concluded that the atom was a circle of positive charge with electron floating in the atom |
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Who showed in 1909 that the plum pudding model was wrong |
Ernest Rutherford |
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What experiment did Rutherford do |
The gold leaf experiment |
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What was the gold leaf experiment |
Rutherford shot positively charged alpha particles at a gold sheet. He was expecting them to all go straight through but some alpha particles deflected 90 degrees backwards. Rutherford found out about the nucleus |
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What was Rutherford's model called |
The nuclear model |
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What did Niels Bohr suggest |
The electrons were orbiting around the nucleus |
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What did James Chadwick discover |
Neutrons |
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What is the electronic structure of oxygen |
2,6 |
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In the early 1800s how were elements arranged |
Atomic weight |
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What were the two obvious ways to categorise elements in the early 1800s |
Atomic weight physical and chemical properties |
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How did Mendeleev design his periodic table |
He left gap and predicted new elements |
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what are the two types of Distillation |
Simple Distillation Fractional Distillation |
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What is fractional distillation |
used to separate a mixture of liquids |
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Draw a diagram of fraction distillation |
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Draw a diagram of Simple distillation |
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Draw a diagram of how you would separate insoluble solids from liquids |
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Draw a diagram on how to do paper chromatography |
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