Periodic table

Question 1

What is an atom?

Answer 1

The smallest part of a substance that cannot be broken down chemically. The atom is the smallest part of a element.

Question 2

Name the first 20 element names

Answer 2

Hydrogen, Helium, Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, Neon, Sodium, Magnesium, Aluminium, Silicon, Phosphorus, Sulphur, Chlorine, Argon, Potassium, and Calcium.

Question 3

Outline examples of scientific evidence available at the time, that contributed to the development of the modern Periodic Table.

Answer 3

Law of Octaves (1864), Atomic Numbers (1913), Modern Periodic Table and Quantum Mechanics (20th century)

Question 4

What chemical properties of elements vary periodically with atomic number

Answer 4

Electron configuration, Periodic trends and Elements

Question 5

what are the vertical columns groups and the horizontal rows named on the periodic table?

Answer 5

Vertical columns are called groups and Horizontal rows are called periods.

Question 6

Where are the metals, non-metals on a Periodic Table?

Answer 6

Metals are located on the left of the periodic table, and nonmetals are located on the upper right.

Question 7

What is the periodic trends in the properties of elements?

Answer 7

electronegativity, atomic radius, melting point, and metallic character.

Question 8

What is the equations for the reaction of metals with water and with common acids.

Answer 8

Metal + water = metal oxide + hydrogen