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Chemistry > Material World > Flashcards

Material World Flashcards

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1
Q

What are atoms

A

Basic unit of matter

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2
Q

What are the three subatomic particles

A

Proton, electron and neutron

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3
Q

What are the charges of the subatomic particles

A

Proton-positive
Neutron- neutral
Electron-negative

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4
Q

Where are the subatomic particles located

A

Proton-inside nucleus
Electron-outside nucleus
Neutron-inside nucleus

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5
Q

What is the mass of the subatomic particles

A

Proton-1
Electron-0
Neutron-1

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6
Q

What is an atomic number

A

Number of protons in an atom. Every atom has a different atomic number

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7
Q

What is nuclide notation

A

Shows an element’s symbol, atomic no. And mass no.

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8
Q

What is mass number

A

Number of protons + number of neutrons

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9
Q

What is an isotope

A

Same atomic number, different mass number

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10
Q

Why do isotopes have different mass numbers

A

Because of the different numbers of neutrons

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11
Q

What is relative atomic mass

A

RAM is the mass of the atom, taking into the account of the relative abundance of the isotope

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12
Q

What is electron arrangement

A

The positions of the electrons around the nucleus

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13
Q

What is the purpose of a chemical formula

A

To tell you about the atoms present

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14
Q

What is valency

A

The number of bonds an atom can make
(The number of unpaired electrons on the outermost energy level)

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15
Q

How do you work out a chemical formula

A

Take the symbols and the valency (simplify if necessary) of the elements and swap the valency to the other symbol

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16
Q

What is different about the valency for transition metals

A

Their valency can change, it is stated as Roman numerals in brackets
If it’s not stated then assume it’s 2

17
Q

How do you calculate the number of moles

A

Work out the GFM
Divide the mass by the GFM

18
Q

What does GFM stand for

A

Gram formula mass

19
Q

Why do atoms form bonds

A

To become stable (having a full outer shell of electrons

20
Q

What does a Lewis dot cross diagram represent

A

Atoms forming bonds/ becoming stable

21
Q

What are the 7 diatomic elements

A

H I N Cl Br O F

22
Q

What are the 4 shapes of molecules

A

Linear
Angular
Trignol pyramid
Tetrahedral

23
Q

What happens in ionic bonding

A

One atom loses an electron and the other will gain one

24
Q

What metal is used to galvanise a metal

A

Zinc

25
Q

What are the differences between the different types of bonding

A

Ionic- solid
Covalent- liquid
Metallic- between metals

Chemistry (5 decks)

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