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Chemistry > Atomic Structure > Flashcards

Atomic Structure Flashcards

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1
Q

What is a molecule?

A

2 or more atoms chemically joined

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2
Q

What is an atom?

A

The smallest particle forming everything

-> They don’t touch

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3
Q

What is an element?

A

2 or more identified atoms

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4
Q

The ________ table lists all of the elements

A

Periodic

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5
Q

What is a compound?

A

2 or more different elements that are chemically joined

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6
Q

What is the mass number of an element on the periodic table?

A

The number of protons + neutrons

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7
Q

What is the atomic number of an element on the periodic table?

A

The number of protons

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8
Q

What is an isotope?

A

Atoms with the same element name that have a different number of neutrons

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9
Q

What is the filled electron configuration?

A

2, 8, 8, 2

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10
Q

What is the relative charge of a Proton?

A

+1

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11
Q

What is the relative charge of a Neutron?

A

0 (neutral)

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12
Q

What is the relative charge of a Electron?

A

-1

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13
Q

What is the relative charge of an atom?

A

0 (neutral)

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14
Q

Who thought that atoms were tiny spheres in 1803?

A

John Dalton

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15
Q

Give 3 parts to John Daltons theory of the tiny spheres as atoms.

A

1) Indivisible sphere that cannot be broken down into anything simpler
2) All atoms of one element are identical
3) Different elements have different atoms
4) In chemical reactions, atoms rearrange to make different substances

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16
Q

Who came up with the Plum Pudding theory?

A

JJ Tompson

17
Q

Explain the Plum Pudding theory.

A

A ball of positive charge with smaller negative particles throughout

18
Q

What was JJ Thomason’s discovery that led to the Plum Pudding model?

A

Atoms weren’t solid spheres

19
Q

Who proposed the Nuclear model?

A

Ernest Rutherford

20
Q

What did Rutherford discover from his model?

A

That particles don’t directly pass through the atom, some deflect and some reflect

21
Q

What did Neil’s Bohr measure?

A

The energy electrons needed to move position

22
Q

How are the electrons organised in Neil Bohr’s model?

A

Into shells or energy levels.

23
Q

What did James Chadwick discover?

A

Neutrons

24
Q

True or false, James Chadwick finalised the atom.

A

True

25
Q

What is the link between the Group number and the electronic structure?

A

The group number is the same as the number of electrons in the outer shell.

Chemistry (4 decks)

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