Introduction to the periodic table of elements: Unit : Arrangment of elements on the periodic table - pg. 82 - 85

Question 1

What is the periodic table?

Answer 1

The periodic table is a list of all the elements arranged on a table.

Question 2

What is an element?

Answer 2

An element is a pure substance which cannot be broken down.

Question 3

Who put the periodic table together?

Answer 3

A Russian chemist called Dimitri Mendeleev in the 1860s.

Question 4

How did Dimitri Mendeleev arrange the elements?

Answer 4

He arranged them according to their properties.

Question 5

What are the rows of the periodic table called?

Answer 5

Periods.

Question 6

What are the columns of the periodic table called?

Answer 6

Groups.

Question 7

What were the 3 catagories Dimitri arranged the elements into?

Answer 7

1. Metals
2. Non - metals
3. Semi - metals

Question 8

What can semi - metals also be called?

Answer 8

Metalloids.

Question 9

Where on the periodic table were metals arranged?

Answer 9

The left-hand side.

Question 10

Where on the periodic table were non-metals arranged?

Answer 10

The right-hand side.

Question 11

Where on the periodic table were semi-metals/metalloids arranged?

Answer 11

Between the metals and non-metals, and is arranged in a zig-zag step.

Question 12

What is an atomic number?

Answer 12

An atomic number is the number of protons in one atom of the element.

Question 13

What are the first twenty elements of the periodic table?

Answer 13

1. Hydrogen (H)
2. Helium (He)
3. Lithium (Li)
4. Beryllium (Be)
5. Boron (B)
6. Carbon (C)
7. Nitrogen (N)
8. Oxygen (O)
9. Fluorine (F)
10. Neon (Ne)
11. Sodium (Na)
12. Magnesium (Mg)
13. Aluminium (Al)
14. Silicon (Si)
15. Phosphorus (P)
16. Sulfur (S)
17. Chlorine (Cl)
18. Argon (Ar)
19. Potassium (K)
20. Calcium (Ca)