C17 GROUP 1 - ALKALI METALS

Question 1

Do group 1 elements react with water?

Answer 1

Yes
- they react vigorously

Question 2

What forms when group 1 metals react with non-metals?

Answer 2

ionic compounds

Question 3

How does the reactivity change as the distance between the nucleus and outer electron increases?

Answer 3

• reactivity increases
• attraction becomes weaker so it is easier to lose an electron
• larger elements are more reactive

Question 4

True or False: alkali metals are hard

Answer 4

False
- alkali metals are soft

Question 5

Give 3 characteristics of alkali metals

Answer 5

• soft
• shiny
• highly reactive

Question 6

Do alkali metals have a high or low density?

Answer 6

low density
- can float on water

Question 7

How many electrons do Group 1 elements have in their outer shell?

Answer 7

1 electron

Question 8

what is produced when group 1 metals react with oxygen?

Answer 8

an oxide

Question 9

what do all metals produce when reacting with water?

Answer 9

hydrogen

Question 10

why are alkali metals more reactive further down the group?

Answer 10

• less energy is needed to remove the electron in the outer shell
• harder to control
• less attraction between positively charged nucleus and negatively charged electron

Question 11

how are elements arranged?

Answer 11

atomic number order

Question 12

what are the melting and boiling points?

Answer 12

low melting points
high boiling points

Question 13

does reactivity increase or decrease down the group?

Answer 13

increase

Question 14

what do metals produce when reacting with water?

Answer 14

hydrogen gas

Question 15

alkali metal + water -> what?

Answer 15

alkali metal hydroxide + hydrogen

Question 16

alkali metal + acid - > what?

Answer 16

salt and hydrogen

Question 17

magnesium + sulfuric acid -> what?

Answer 17

magnesium sulfate + hydrogen