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CCEA GCSE Chemistry > Word bank: Structures, Trends, Chemical Reactions, Quantitative Chemistry & Analysis > Flashcards

Word bank: Structures, Trends, Chemical Reactions, Quantitative Chemistry & Analysis Flashcards

(62 cards)

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1
Q

What is an Atom?

(2 marks) 



A

An atom is the Simplest Particle of an Element that can exist on its own in a stable environment.

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2
Q

What is an Atomic Number?


(2 marks)


A

The number of protons in the nucleus of an atom. Also called the proton number.

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3
Q

What is a Compound?

(2 marks)

A

A substance formed when 2 or more Elements are chemically combined.

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4
Q

What is an Electron?


(3 marks)


A

Subatomic particle, with a negative charge and a negligible mass relative to protons and neutrons.

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5
Q

What is an Electronic Configuration?

(1 mark)


A

The order Electrons are arranged in different shells.

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6
Q

What is an Element? 


2 marks

A

An Element is a substance that consists of only 1 type of Atom and it cannot be broken down into anything simpler by chemical means.

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7
Q

What is an Isotope? 

(4 marks)

A

Atoms which have the same number of protons (so they are atoms of the same element)
but they have a different number of neutrons (so they have a different mass number).

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8
Q

What is a Mass Number?


(2 marks)


A

The number of protons and neutrons found in the nucleus of an atom.

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9
Q

What is a Model? 


(3 marks)


A

An equation, diagram or analogy that helps explain a scientific idea.

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10
Q

What is a Molecule? 


2 marks

A

A particle that consists of 2 or more atoms chemically bonded together.

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11
Q

What is a Neutron? 


(2 marks)


A

Uncharged subatomic particle, with a mass of 1 relative to a proton.

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12
Q

What are Noble Gases?

(2 marks)



A

The elements in Group 0 of the Periodic Table, named for their lack of chemical reactivity.

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13
Q

What is a Nucleus?


4 marks

A

The central part of an atom. It contains protons and neutrons, and has most of the mass of the atom.

Plural: nuclei.

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14
Q

What is the Plum Pudding Model?


2 marks

A

The scientific idea that an atom is a sphere of positive charge, with negatively charged electrons in it.

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15
Q

What is a Proton?

(2 marks)



A

Subatomic particle with a positive charge and a relative mass of 1.

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16
Q

What is a Relative Atomic Mass?

(4 marks)

A

The mass of the atom compared with that of the Carbon-12 Isotope, which has a mass of exactly 12, and it is the weighted mean of the mass numbers.

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17
Q

What is Relative Mass?

(2 marks)



A

The relative mass is the number of times heavier a particle is, compared to another.

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18
Q

What is a Subatomic Particle?


2 marks

A

Objects found in atoms, including protons, neutrons and electrons.

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19
Q

What is an Acid?


(2 marks)


A

Substance which produces Hydrogen Ions when dissolved in water.

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20
Q

What is an Alkali?

(2 marks)

A

Substance which produces Hydroxide Ions when dissolved in water

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21
Q

What is a Balanced Equation?

(4 marks)



A

Chemical Equation written using the Symbols and Formulae of the Reactants + Products
- so that the number of units of each Element present is the same on both sides of the arrow.

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22
Q

What is meant by ‘Diatomic’?


(2 marks)


A

2 atoms covalently bonded in a molecule.

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23
Q

What is Electrolysis?

(2 marks)

A

The decomposition of a Liquid Electrolyte using a direct current of electricity.

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24
Q

What is Precipitate?


2 marks

A

An insoluble solid which may be formed on mixing 2 solutions.

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25
What are ‘products’?
 | (1 mark)

Substances formed in a chemical reaction.
26
What are Reactants?
 | (2 marks)

Substances present at the start of a chemical reaction.
27
What is a Redox Reaction?
 | (2 marks)

A redox reaction is one in which Oxidation and Reduction occur at the same time.
28
What is a State Symbol?
 | (2 marks)

A symbol used in chemical equations to show if a substance is a solid, a liquid, a gas, or an aqueous solution.
29
What is a Subscript? (2 marks)


A character (number, letter or symbol) that is set below the normal line of type.
30
What is a Superscript?
 | 3 marks
A character (number, letter or symbol) that appears slightly above the normal line of type, and that is usually smaller than the rest of the text. 

31
What are Word Equations?
 | 2 marks
An equation in which only the names of the Reactants and Products are used to model a reaction.
32
What is an Anion?
 | (1 mark)

A negative ion.
33
What is a Cation? 
 | (1 mark)

A positive ion.
34
What is Covalent Bonding?
 | (2 marks)

A covalent bond is formed by a shared pair of electrons.
35
What are Delocalised Electrons? 

(1 mark)
Electrons that are free to move throughout a whole structure.
36
What is an Ion?
 | 2 marks
A charged particle formed when when an atom gains or loses electrons
37
What is Ionic Bonding?
 | (2 marks)

An ionic bond is the attraction between oppositely charged ions.
38
What is a lone pair?
 | (1 mark)

An unbonded pair of electrons
39
What is a Metal?
 | (3 marks)

Shiny Element that is a good conductor of electricity and heat, and which forms Basic Oxides.
40
What is a Metal Compound?

(2 marks)
A compound that contains 1 or more metal elements bonded to another element.
41
What is Metallic Bonding? 
 | 3 marks
The attraction between Delocalised Electrons and the Positive Ions in a Regular Lattice.

42
What is a Molecular Ion? 
 | (2 marks)

A particle made of more than 1 atom that has an overall positive or negative charge.
43
What is a Non-Metal?
 | 2 marks
Element that is a poor conductor of electricity and heat, and which forms Acidic Oxides.
44
What is an Aqueous Solution? 
 | (1 mark)

A solution in which the solvent is water.
45
What is a Boiling Point?
 | 2 marks
The temperature at which a substance rapidly changes from a liquid to a gas.
46
What does it mean to ‘Conduct’?
 | (2 marks)

To allow electricity, heat or other energy forms to pass through.
47
What does ‘Delocalised’ mean?
 | 3 marks
Electrons that are not associated with a particular atom, eg in a metal, outer electrons can be free to move through the solid.
48
What is Diamond?
 | (7 marks)

A form (allotrope) of Pure Carbon in which all the atoms are bonded to 4 others in a Giant Tetrahedral Network Structure which is very strong. - It is the hardest known natural substance, has a very high melting point and does not conduct electricity.
49
What does Ductile mean?
 | (1 mark)

Capable of being drawn into wires without breaking.
50
What is a Giant Covalent Structure?

(2 marks)
A structure in which very large numbers of atoms are joined together by Covalent Bonds in a regular network.
51
What is Graphene? (3 marks)

A form of Carbon consisting of a single layer of Carbon Atoms joined together in Hexagonal Rings.

52
What is Graphite?
 | (3 marks)

A form of Pure Carbon in which all the atoms are bonded to 3 others in giant sheets which can slide over each other.
53
What is an Ionic lattice?
 | 1 mark
The regular arrangement of Ions in an Ionic Substance.
54
What is a Lubricant? 
 | (1 mark)

Anything which reduces the friction between 2 surfaces.
55
What does it mean to be ‘Malleable’? 
 | (1 mark)

Capable of being hammered into a new shape without breaking.
56
What is a Melting Point? 
 | (2 marks)

The temperature at which a solid changes into a liquid as it is heated.
57
What are Van der Waals'?
 | 2 marks
Intermolecular attractions found between molecules of substances.
58
What is a Nanoparticle? 
 | (1 mark)

A structure that is 1 - 100 nm in size.
59
What is a Nanoparticulate?
 | (2 marks)

Useful substances containing nanoparticles.
60
What is a Surface Area?

(2 marks)
The total area of all sides on a 3D shape.
61
What is Volume?
 | 3 marks
The volume of a three-dimensional shape is a measure of the amount of space or capacity it occupies.
62
What does ‘Sonorous’ mean? | 1 mark
Makes a ringing sound when struck.

CCEA GCSE Chemistry (7 decks)

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