3.1 - Periodic Table

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

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Front (Question)

Back (Answer)

Front (Question)

Give an outline of the periodic table

Back (Answer)

• Consists of rows (periods- horizontally across) - Consists of groups - Arranged by increasing atomic number

Front (Question)

In the periodic table, elements are arranged by …

Back (Answer)

Increase atomic number

Front (Question)

What groups are fond in the s block?

Back (Answer)

Groups 1 and 2

Front (Question)

What groups are found in the p block?

Back (Answer)

Groups 3-8

Front (Question)

What are the names of the elements found in block d?

Back (Answer)

Transition metals

Front (Question)

Define the term periodicity

Back (Answer)

Trends that occur in physical and chemical properties as we move across the periods of the periodict table

Front (Question)

When talking about periodicity, list 5 different trends that we talk about

Back (Answer)

• Ionisation energy - Melting Points/Boiling Points - Reactivity - Atomic Radius - Electronegativity

Front (Question)

Do all the elements within a group have similar reactions, why?

Back (Answer)

Elements in the same group have the same number of electrons on their outer shell. Therefore, they have similar chemical properties.

#10

Front (Question)

What was Döbereiner’s theory about?

Back (Answer)

Triads

#11

Front (Question)

What was John Newlands’ theory about?

Back (Answer)

Law of octaves

#12

Front (Question)

What was Mendeleev’s theory about?

Back (Answer)

Gaps, elements arranged in order of increase atomic mass

#13

Front (Question)

What is the modern day theory of the periodic table?

Back (Answer)

Elements are arranged in order of increasing atomic number

#14

Front (Question)

Explain Döbereiner’s theory behind his model of the periodic table

Back (Answer)

• Döbereiner grouped similar elements in TRIADS e.g. Li,Na and K. - He ordered elements by atomic mass. - The middle element in his triads had SIMILAR properties to the other TWO elements.

#15

Front (Question)

Explain John Newlands’ theory behind his model of the periodic table

Back (Answer)

• Newlands arranged elements in order of mass. He noticed that every 8th element was SIMILAR.

#16

Front (Question)

Explain Mendeleev’s theory behind his model of the periodic table

Back (Answer)

• He arranged all known elements by atomic mass - He left GAPS, where no element fitted the repeating patterns - Predicted the patterns of missing elements

#17

Front (Question)

Explain the theory behind the modern day periodic table ( Henry Moseley)

Back (Answer)

• Elements are arranged by increasing atomic number - There are groups and periods

#18

Front (Question)

Define first ionisation energy

Back (Answer)

The amount of energy needed to remove 1 mole of electrons from 1 mole of gaseous atoms.

#19

Front (Question)

Give the equation for the first ionisation energy of oxygen

Back (Answer)

O(g) → O^+ (g) + e^-

#20

Front (Question)

Give the equation for the first ionisation energy of magnesium

Back (Answer)

Mg(g) → Mg^+ (g) + e^-

#21

Front (Question)

Give the equation for the first ionisation energy of Sodium

Back (Answer)

Na(g) → Na^+ (g) + e^-

#22

Front (Question)

When talking about first ionisation energy what must you include?

Back (Answer)

• Charges - Gaseous state - The amount of energy needed to remove 1 mole of electrons from 1 mole of gaseous atoms

#23

Front (Question)

The lower the ionisation energy, the easier/harder it is to form an ion?

Back (Answer)

Easier

#24

Front (Question)

What factors affect ionisation energy?

Back (Answer)

Nuclear charge Atomic radius Shielding