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Chemistry > Chemistry Revision For End Of Year > Flashcards

Chemistry Revision For End Of Year Flashcards

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1
Q

Which is the mass number

A

The top

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2
Q

Which is the atomic number

A

The bottom

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3
Q

How do you get the mass number (top number)

A

Protons + neutrons

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4
Q

What is an ionic bond comprised of

A

Metals + non metals

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5
Q

What is a covalent bond comprised of

A

Non metals + non metals

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6
Q

What is a metallic bond comprised of

A

Metals + metals

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7
Q

What is a feature of delocalised electrons

A

They are not bound to an atom and are free

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8
Q

What is an isotope

A

Atoms of the same element (have the same number of protons) that contains a different number of neutrons

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9
Q

How do you calculate isotopes

A

Isotopes abundance x isotope mass number
Divided by
Isotope abundance number

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10
Q

What is relative formula mass (mr)

A

The total mass number of all atoms that appear in the formula

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11
Q

How do you measure mass

A

Mass of atoms in formula
Divided by X 100
Total mr

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12
Q

What is Avagadro’s constant number

A

6.022 x 10 ^23

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13
Q

How to calculate moles

A

Mass (g)
Divided by
Mr

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14
Q

How to calculate concentration

A

Mass (g)
Divided by
Volume (dm^3)

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15
Q

Who created the periodic table

A

Dimitri Mendeleev

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16
Q

What is matter

A

Anything that occupies space and has mass

17
Q

Chemical changes

A

Reactants -> products

18
Q

What will happen to the overall mass of a product if a gas was produced during a reaction

A

It will decrease

19
Q

What is the acronym used to remember which is the cathode and which is the anode

A

PANIC
Positive Anode Negative Is Cathode

20
Q

What is the activation energy WITHOUT a catalyst

A

High

21
Q

What is the activation energy WITH a catalyst

A

Low

22
Q

Who created the plum pudding model

A

Thomson

23
Q

Who created the nuclear model

A

Rutherford

24
Q

What is crystallisation

A

Produced solid crystals from a solution

25
Q

What is group 7 known as

A

The halogens

26
Q

What are group 0 elements known as

A

The noble gases

27
Q

Why are group 0 elements unreactive

A

Atoms of group zero already have a stable arrangement of electrons (a full outer shell)

28
Q

What observations can we see when potassium reacts with water

A

It melts
It self ignites
It moves quickly around the surface

29
Q

What is an endothermic reaction

A

chemical reactions in which the reactants absorb heat energy from the surroundings to form products.

30
Q

What is an exothermic reaction

A

a chemical reaction that releases energy into the surroundings

31
Q

What is a nanoparticle

A

A nanoparticle is a small particle that ranges between 1 to 100 nanometres in size

32
Q

Give three examples of nanoparticles

A

Gold
Silver
Zinc

33
Q

What is the law of conservation of mass

A

The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed

Chemistry (1 decks)

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