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Chemistry > Paper 1 Topics (Edexcel GCSE Chemistry) > Flashcards

Paper 1 Topics (Edexcel GCSE Chemistry) Flashcards

(24 cards)

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1
Q
  1. Atomic Structure and the Periodic Table
A
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2
Q

What are the 3 subatomic particles and their charges?

A

Proton (+1), Neutron (0), Electron (-1)

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3
Q

What is the mass number of an atom

A

The total number of protons and neutrons.

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4
Q

What is an isotope?

A

Atoms of the same element with different numbers of neutrons.

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5
Q

How are elements arranged in the modern periodic table?

A

By increasing atomic number

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6
Q
  1. Bonding, Structure and Properties of Matter
A
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7
Q

What are the 3 types of bonding?

A

Ionic, Covalent, Metallic

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8
Q

What is metallic bonding and what does it do?

A

Occurs between: Metals only
What happens:Atoms release their outer electrons, forming a “sea of delocalised electrons.”Positive metal ions are held together by the attraction to the sea of electrons.
Bond formed by: Electrostatic attraction between positive ions and delocalised electrons.

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9
Q

What is covalent bonding an what does it do?

A

Occurs between: Non-metals only
What happens:Electrons are shared between atoms.Each atom achieves a full outer shell.
Bond formed by: Shared pairs of electrons.

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10
Q

What is ionic bonding an what does it do?

A

Occurs between: Metals and non-metals
What happens:Electrons are transferred from the metal to the non-metal.The metal becomes a positive ion (cation) The non-metal becomes a negative ion (anion).
Bond formed by: Strong electrostatic attraction between oppositely charged ions.

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11
Q

What are properties of ionic compounds?

A

High melting points, conduct electricity when molten or dissolved.

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12
Q

Why do simple covalent molecules have low melting points?

A

Weak intermolecular forces.

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13
Q
  1. Quantitative Chemistry
A
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14
Q

What is the law of conservation of mass?

A

Mass is not lost or gained in a chemical reaction.

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15
Q

What is the empirical formula?

A

The simplest whole-number ratio of atoms in a compound

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16
Q

What is the formula for moles?

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A

Moles = Mass / Mr

17
Q
  1. Chemical Changes
18
Q

What is a displacement reaction?

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A

A more reactive metal displaces a less reactive one from a compound.

19
Q

What is the pH range of acids?

20
Q

What is formed when an acid reacts with a base?

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A

Salt + Water (Neutralisation)

21
Q
  1. Electrolysis
22
Q

What is electrolysis?

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A

Breaking down a compound using electricity.

23
Q

What is formed at the cathode during electrolysis of molten ionic compounds?

24
Q

What is formed at the anode during electrolysis of molten ionic compounds?

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A

Non-metal (usually gas)

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