C2 Periodic Table

Question 1

1. What order are the elements arranged in the modern periodic table?

Answer 1

1. Atomic number

Question 2

2. What order were they put into in the early periodic table?

Answer 2

2. Atomic mass

Question 3

3. How did Mendeleev improve the periodic table?

Answer 3

3. Left gaps

Question 4

4. Why doesn’t it work to put the elements in order of atomic weight?

Answer 4

4. Because of isotopes

Question 5

5. Where are metals found on the periodic table?

Answer 5

5. Left hand side

Question 6

6. Why do elements in the same column of periodic table have similar chemical properties?

Answer 6

6. Same number of electrons in outer shell.

Question 7

7. Do metals form positive or negative ions?

Answer 7

7. Positive

Question 8

8. What are elements in group 0 called?

Answer 8

8. Noble gases

Question 9

9. How reactive are the group 0 elements?

Answer 9

9. Very unreactive

Question 10

10. How does the boiling point of the noble gases change as you go down the group?

Answer 10

10. Increases (gets higher)

Question 11

11. What are the elements in Group 1 known as?

Answer 11

The Alkali metals

Question 12

12. How reactive are the alkali metals?

Answer 12

Very reactive

Question 13

13. What do the alkali metals react with oxygen to make?

Answer 13

Metal oxides

Question 14

14. What do the alkali metals react with chlorine to make?

Answer 14

Metal chlorides

Question 15

15. What do the alkali metals react with water to make?

Answer 15

Metal hydroxides and hydrogen

Question 16

16. How does the reactivity of the alkali metals change as you go down the group?

Answer 16

Get more reactive

Question 17

What is the name given to the Group 7 elements?

Answer 17

The Halogens

Question 18

18. The Halogens exist as diatomic molecules. What does diatomic mean?

Answer 18

Two atoms bonded together

Question 19

19. How does the reactivity of the halogens change as you go down the group?

Answer 19

Get less reactive