Periodic table

Question 1

How do metallic properties of elements change across a period?

Answer 1

from left to right, metallic properties decrease

Question 2

How do metallic properties of elements change across a group?

Answer 2

going down the group, metallic properties increase

Question 3

How are elements in the same period similar?

Answer 3

the number of electron shells are the same

Question 4

How are elements in the same group similar?

Answer 4

the number of valence electrons are the same

Question 5

What are the physical properties of alkali metals? [3]

Answer 5

soft and can be cut easily
low melting and boiling points
low densities

Question 6

How do the physical properties of alkali metals change going down the group?

Answer 6

melting and boiling points decrease

densities increase

Question 7

What are the chemical properties of alkali metals? [3]

Answer 7

react with cold water to form alkali and hydrogen
powerful reducing agents
form ionic compounds

Question 8

Do all alkali metals have the same reactivity?

Answer 8

reactivity increases

Question 9

What are the physical properties of halogens? [2]

Answer 9

low melting and boiling points

coloured

Question 10

How do physical properties of halogens change going down the group?

Answer 10

melting and boiling points increase

colours become darker

Question 11

What are the chemical properties of halogens? [2]

Answer 11

undergo displacement (more reactive displace less reactive)
powerful oxidising agents

Question 12

Do all halogens have the same reactivity?

Answer 12

reactivity decreases

Question 13

What are the properties of noble gases? [5]

Answer 13

monatomic
colourless at room temperature
low melting and boiling points
insoluble 
unreactive

Question 14

Why are noble gases unreactive?

Answer 14

full valence shell

Question 15

What are the uses of noble gases?

Answer 15

helium in balloons

neon in lights