Elements and the periodic table

Question 1

How many different types of atom does an element contain?

Answer 1

An element contains just one type of atom.

(Textbook p age 22)

Question 2

What is a compound?

Answer 2

A compound contains two or types of atom chemically bonded together. (Textbook page 22)

Question 3

Complete the word equation

Iron + sulfur ⇒ ___________

Answer 3

Iron + sulfur ⇒ Iron sulfide

(page 24 textbook)

Question 4

What are the state symbols used when writing chemical equations?

Answer 4

solid (s)

liquid (l)

gas (g)

solution (aq)

(page 28 textbook)

Question 5

What is the atomic number?

Answer 5

The atomic number is the number of protons, (which is the same as the number of electrons)

(Page 33 textbook)

Question 6

Name the alkali metals

Answer 6

Lithium,

sodium

potassiium

rubidium

caesium

(page 50, textbook)

Question 7

What is the group number of the Alkali Metals?

Answer 7

Group 1

(Periodic table or textbook p 50)

Question 8

What are the similarities in the physical properties of the alkali metals?

Answer 8

• low melting points
• very soft
• low densities

(Page 50 textbook)

Question 9

What typical metal properties do the alkali metals have?

Answer 9

• Shiny
• good conductors of heat
• good conductors of electricity.
• Make basic oxides.

Question 10

State two differences you would see between the reactions of Potassium and Lithium with water.

Answer 10

Any two

• Potassium reacts faster
• Potassium fizzes more.
• Potassium melts
• Potassium forms a ball.
• Potassium moves around in the water faster.
• Potassium catches fire
• Potassium produces a lilac or purple flame.