Unit 1- Atomic Structure and Periodic Table Flashcards

(36 cards)

1
Q

Charge of Proton

A

Positive 1

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2
Q

Charge of Electron

A

Negative 1

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3
Q

Charge of Neutron

A

No Charge

Neutral

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4
Q

Mass of Proton

A

1

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5
Q

Mass of Neutron

A

1

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6
Q

Mass of electron

A

Very small (1/1800)

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7
Q

Define Element

A

Substance made up of only one type of atom

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8
Q

Define Compound

A

Substance made up of two or more bonded atoms

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9
Q

Define Mixture

A

Two or more elements or compounds not chemically bonded

Can be separated

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10
Q

Plum pudding model of an atom

A

Positively charged ball with negatively charged electrons in it

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11
Q

Maximum electrons in first 3 energy shells

A

1st- 2 electrons
2nd- 8 electrons
3rd- 8 electrons

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12
Q

Where are protons in an atom?

A

In the neucelus

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13
Q

Where are neutrons in an atom?

A

In the neucelus

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14
Q

What did James Chadwick discover?

A

Neutrons

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15
Q

Where are electrons in the atom?

A

In energy shells/levels

surrounding the nucelsus

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16
Q

Mass number

A

sum of protons and neutrons together

17
Q

Atomic number

A

Number of protons in an atom

Number of electrons in an atom

18
Q

Isotope

A

Same elements with different number of neutrons (mass number)

19
Q

How is the periodic table ordered?

A

In atomic number order

20
Q

Relationship between valence (outer) electrons and group number

A

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

21
Q

Row in the periodic table

22
Q

Columns in the periodic table

23
Q

Metal ions are….

A

positively charged

24
Q

Non-metal ions are…

A

negatively charged

25
Position of non-metals on periodic table
Top right
26
Position of metals on periodic table
Middle and left
27
Position of transition metals
In the middle
28
Properties of Group 0 Noble gases
Unreactive | Low melting and boiling point
29
Why are group 0 noble gases unreactive?
They have full outer shells
30
Name of group 1 metals
Alkali metals
31
Reactivity of group 1 meals down the group
Increases down the group
32
How do group 1 metals form ions?
Loses electron | Positive one change
33
How do group 7 halogens form ions?
Gains electron | Negative one charge
34
Name of group 7 elements
Halogens
35
Reactivity of group 7 down the group...
decreases
36
Down group 7 the melting point...
increases