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Chem Flashcards

To learn (15 cards)

1
Q

What is an Atom?

A

Building blocks that make up matter

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2
Q

What is an Atomic Number?

A

Number of Protons

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3
Q

What is the Mass Number?

A

Protons + Neutrons

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4
Q

What are the three Sub-Atomic Particles?

A

Protons, Neutrons & Electrons

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5
Q

What is the electronic configuration for Arsenic? (As)?

A

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3

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6
Q

What is a period?

A

Number of Electrons shells/orbit (a row across horizontally).

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7
Q

What is a group?

A

Number of Shells (A column vertical down)

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8
Q

What are isotopes

A

It has the same no. of protons, different number of neutrons

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9
Q

is the electronic configuration of Calcium (Ca)?

A

1s2 2s2 2p6 3s2 3p6 4s2

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10
Q

State an example of a chemical change

A

Effervescence, new product, light or heat product, or colour change.

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11
Q

State an example of a physical property

A

State change or shape change

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12
Q

What is electronegativity

A

How strong an atom holds its electron

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13
Q

what is ionisation energy

A

The energy needed to take/remove a n electron.

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14
Q

What is the atomic radii

A

Its the total distance from the atom’s nucleus to the outermost orbital of electrons.

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15
Q
A
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