Periodic Table

Question 1

Atomic Number

Answer 1

Number of protons

Question 2

Mass Number

Answer 2

Protons and neutrons

Question 3

What are the rows of the periodic table called?

Answer 3

Periods

Question 4

What are the columns of the periodic table called?

Answer 4

Groups

Question 5

Elements in the same group have the same…

Answer 5

number of electrons in their outer shell

Question 6

What does the group number tell you about the element?

Answer 6

How many electrons are in the outer shell and have similar properties

Question 7

How were elements first organised?

Answer 7

By their mass

Question 8

How do we order elements now?

Answer 8

Atomic number (protons)

Question 9

Who first devised a periodic table?

Answer 9

John Newland

Question 10

What was wrong with Newlands first periodic table?

Answer 10

Some elements were put in the wrong place

Question 11

Who realised there might be undiscovered elements?

Answer 11

Dmitri Mendeleev

Question 12

How did Mendeleev change the periodic table?

Answer 12

He added gaps to Newlands table for undiscovered elements that he predicted the mass and properties of

Question 13

How is the modern periodic table different from Mendeleevs?

Answer 13

The gaps are filled in and the discovery of protons and isotopes

Question 14

What happens when metals react?

Answer 14

They lose 1 or more electrons to form positive ions

Question 15

Properties of metals

Answer 15

High melting and boiling points, good conductors, all solid except mercury at room temp

Question 16

What happens when non metal react?

Answer 16

Gain electron to form negative ions or share electrons to make neutral molecules

Question 17

Properties of non metals

Answer 17

Lower melting and boiling points, found in gases, don’t conduct

Question 18

What are group one metals also known as?

Answer 18

Alkali metals

Question 19

Features of alkalis

Answer 19

Soft and low ish melting points

Question 20

How is reactivity affected going down group 1?

Answer 20

More reactive

Question 21

How does lithium sodium and potassium react with water?

Answer 21

Floats and releases hydrogen bubbles, floats and melts moving quickly across the water, floats with more rigorous reaction

Question 22

Why does reactivity increase down group 1?

Answer 22

Because they have more shells, therefore the attraction between the outer electron and the nucleus is weaker and so the electron is easier to lose

Question 23

What are group 7 elements called?

Answer 23

Halogens

Question 24

Does reactivity increase or decrease down the group?

Answer 24

decreases due to more shells therefore weaker attraction for gaining an electron

Question 25

What type of molecules are halogens?

Answer 25

Diatomic meaning they share electrons in pairs

Question 26

What happens when a metal transfers it’s outer electron to a non metal?

Answer 26

A salt is formed

Question 27

What are group 0 elements called?

Answer 27

Noble gases

Question 28

Why are noble gases inert?

Answer 28

Because they have a full outer shell

Question 29

What are noble gases used for?

Answer 29

Lightbulbs as they won’t react with the hot filament

Question 30

How do noble gases exist?

Answer 30

As monatomic single atoms

Question 31

Features of noble gases?

Answer 31

Colourless, low density

Question 32

Features of transition metals?

Answer 32

High melting point, high density, they form coloured compounds, catalytic activity