Chemistry Paper 1 AQA Flashcards
What is a compound?
2 or more elements that are chemically bonded together.
Where are the protons?
Nucleus
What is the mass of a proton?
1
What charge does a proton have?
+1
Where are the neutrons?
Nucleus
What is the mass of neutrons?
1
What charge do the neutrons have?
0
Where are the elections?
Outer shell
What is the mass of electrons?
1/2000
What charge are electrons?
-1
Separating mixtures
What is distillation?
Separating things of by boiling points
Separating mixtures
What is evaporation?
Evaporate liquids and leave the solids that had been dissolved in the liquid in dish
Separating mixtures
What is filtration?
Large particle solid in liquid. The particles of solid will stay in the filter paper and liquid will drop through.
Separating mixtures
What is fractional distillation?
Take things of at different boiling points.
What did Rutherford discover?
Discovered nucleus and protons
What did Chadwick discover?
Discovers neutrons
What did Bohr discover?
Discovered our current atom model
How did Rutherford test to see if the ‘plum pudding’ theory was right?
A beam of alpha particles were aimed at a thin gold foil and the passage of them through the foil was detected
- most went through. Telling us the atom is mainly empty space
- some were deflected or repelled because they were positive
What did Mendeleev do?
Ordered element in atomic mass but he left gaps in his periodic table and made predictions which ended up being quite accurate when new things were discovered
What way do groups go in the periodic table?
Down
What way to periods go in the periodic table?
Across
What do the groups tell you about the atom?
The number of electrons on the outer shell
What do they periods tell you about the atoms?
How many shells it has
What is ionic bonding?
Is the transfer of electrons from a metal to a non-metal
What is covalent bonding?
The sharing of electrons between two non-metals
What are in group 1?
Alkali metals
What are in group 2?
Alkali earth metals
What are in group 7?
Halogens
What are in group 8?
Nobel gases
What did Newlands try to do?
Group the periodic table into octave
- by mass
- into patterns
Acid + metal —> _____ + _______
Acid + metal —> salt + hydrogen
Acid + metal oxide —> _____ + _______
Acid + metal oxide —> salt + water
Acid + metal hydroxide -> _______ + _______
Acid + metal hydroxide -> salt + water
Acid + metal base —> _____ + _______
Acid + metal base —> salt + water
Acid + metal carbonate -> _______ + _______
Acid + metal carbonate -> salt + water + carbon dioxide
What is pH 1?
Acid
What is pH 7?
Neutral
What is pH 14?
Alkali
