1d-peridoic table

Question 1

What is the periodic table, and how is it organized?

Answer 1

The periodic table is a chart that organizes elements by increasing atomic number and groups them based on similar chemical properties.

Question 2

What are groups and periods?

Answer 2

Groups: Vertical columns that contain elements with the same number of electrons in their outer shell, giving them similar properties.

Periods: Horizontal rows where elements show a gradual change in properties as you move across.

Question 3

What are the main groups in the periodic table, and what are their properties?

Answer 3

Group 1 (Alkali Metals): Highly reactive, soft metals that react with water to form alkaline solutions.

Group 7 (Halogens): Non-metals that become less reactive as you move down the group.

Group 0 (Noble Gases): Inert gases with full outer electron shells, making them unreactive.

Question 4

How does reactivity change within groups?

Answer 4

Group 1: Reactivity increases down the group because the outer electron is farther from the nucleus and more easily lost.

Group 7: Reactivity decreases down the group because the outer shell is farther from the nucleus, making it harder to gain an electron.

Question 5

Why are elements in the same group similar?

Answer 5

Elements in the same group have the same number of electrons in their outer shell, giving them similar chemical properties.

Question 6

What is the difference between metals and non-metals?

Answer 6

Metals: Conduct heat and electricity, are malleable, ductile, and shiny.

Non-metals: Poor conductors, brittle, and have lower melting and boiling points.

Question 7

What is the practical method for investigating the properties of Group 1 metals?

Answer 7

Method:

Drop small pieces of lithium, sodium, and potassium into water.

Observe their reactions, including movement, fizzing, and flame color.

Question 8

What are the results of investigating Group 1 metals?
Lithium

Answer 8

Lithium: Fizzes and moves slowly.

Question 9

What is the conclusion of the investigation on Group 1 metals?

Answer 9

Reactivity increases down Group 1.

Question 10

What are the results of investigating Group 1 metals?sodium

Answer 10

Sodium: Fizzes, moves quickly, and melts into a ball.

Question 11

What are the results of investigating Group 1 metals?
Porassium

Answer 11

Potassium: Burns with a lilac flame and moves rapidly.