C1 - atomic structure Flashcards

1
Q

What is an element

A

A substance made of only one type of atom

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2
Q

What is a compound

A

A substance made of multiple chemically bonded atoms

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3
Q

What is a molecule

A

A substance that contains more than one atom

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4
Q

What is a mixture

A

A mixture of atoms or molecules not chemically bonded

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5
Q

Law of conservation of mass

A

Mass cannot be created or destroyed

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6
Q

What is a solution

A

A liquid with one substance dissolved in another

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7
Q

What is a solute

A

A solid dissolved in a solution

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8
Q

What is a solvent

A

A liquid that dissolves a solute

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9
Q

What is filtration

A

Separating substances by particle size

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10
Q

What is crystalisation

A

Heating a solution to evaporate the solvent and leave the solid solute

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11
Q

What is distillation

A

Separating a liquid from a soluble solid by evaporating and collecting it

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12
Q

What is fractional distillation

A

Separating a two dissolved liquids by boiling point (miscible liquids)

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13
Q

What is chromatography

A

Separating mixtures into their components by solubility in a mobile phase

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14
Q

History of atom list all people and what they discovered in order

A

Democritus - atoms aren’t divisible
John Dalton - atoms aren’t divisible
JJ Thomson - electrons, plum pudding
Rutherford - gold foil experiment, nucleus
Niels Bohr - shells
James Chadwick - neutrons

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15
Q

What is an isotope

A

An atom with a different number of neutrons

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16
Q

What is an ion

A

An atom with a charge

17
Q

What charge do atoms have

A

0

18
Q

What are acids

A

Solutions with a high concentration of H+ ions

19
Q

What are alkalis

A

Solutions with a high concentration of OH- ions

20
Q

What is neutralisation

A

Adding an acid and alkali together to get a solution with a PH of 7, H+ and OH- make water, which has no charge

21
Q

What is universal indicator

A

A substance that changes colour with PH

22
Q

What is displacement

A

Where a more reactive metal will displace a less reactive metal from a solution of its salt

23
Q

Formula for acid + alkali

A

Salt + water

24
Q

Formula for metal + acid

A

Salt + hydrogen

25
Q

Formula for metal oxide + acid

A

Salt + water

26
Q

Formula for metal hydroxide + acid

A

Salt + water

27
Q

Formula for metal carbonate + acid

A

Salt + carbon dioxide